94 files changed, 190 insertions, 459 deletions
diff --git a/arch/i386/kernel/cpu/cpufreq/cpufreq-nforce2.c b/arch/i386/kernel/cpu/cpufreq/cpufreq-nforce2.c
index 0d49d73d1b71..66acd5039918 100644
--- a/arch/i386/kernel/cpu/cpufreq/cpufreq-nforce2.c
+++ b/arch/i386/kernel/cpu/cpufreq/cpufreq-nforce2.c
@@ -391,8 +391,6 @@ static struct cpufreq_driver nforce2_driver = {
 */
 static unsigned int nforce2_detect_chipset(void)
 {
-        u8 revision;
        nforce2_chipset_dev = pci_get_subsys(PCI_VENDOR_ID_NVIDIA,
                                        PCI_DEVICE_ID_NVIDIA_NFORCE2,
                                        PCI_ANY_ID, PCI_ANY_ID, NULL);
@@ -400,10 +398,8 @@ static unsigned int nforce2_detect_chipset(void)
        if (nforce2_chipset_dev == NULL)
                return -ENODEV;
-        pci_read_config_byte(nforce2_chipset_dev, PCI_REVISION_ID, &revision);
        printk(KERN_INFO "cpufreq: Detected nForce2 chipset revision %X\n",
-               revision);
+               nforce2_chipset_dev->revision);
        printk(KERN_INFO
               "cpufreq: FSB changing is maybe unstable and can lead to crashes and data loss.\n");
diff --git a/arch/i386/kernel/cpu/cpufreq/gx-suspmod.c b/arch/i386/kernel/cpu/cpufreq/gx-suspmod.c
index 6667e9cceb9f..194144539a6f 100644
--- a/arch/i386/kernel/cpu/cpufreq/gx-suspmod.c
+++ b/arch/i386/kernel/cpu/cpufreq/gx-suspmod.c
@@ -115,7 +115,6 @@ struct gxfreq_params {
        u8 pci_suscfg;
        u8 pci_pmer1;
        u8 pci_pmer2;
-        u8 pci_rev;
        struct pci_dev *cs55x0;
 };
@@ -276,7 +275,7 @@ static void gx_set_cpuspeed(unsigned int khz)
                        pci_write_config_byte(gx_params->cs55x0, PCI_VIDTC, 100);/* typical 50 to 100ms */
                        pci_write_config_byte(gx_params->cs55x0, PCI_PMER1, pmer1);
-                        if (gx_params->pci_rev < 0x10) {   /* CS5530(rev 1.2, 1.3) */
+                        if (gx_params->cs55x0->revision < 0x10) {   /* CS5530(rev 1.2, 1.3) */
                                suscfg = gx_params->pci_suscfg | SUSMOD;
                        } else {                           /* CS5530A,B.. */
                                suscfg = gx_params->pci_suscfg | SUSMOD | PWRSVE;
@@ -471,7 +470,6 @@ static int __init cpufreq_gx_init(void)
        pci_read_config_byte(params->cs55x0, PCI_PMER2, &(params->pci_pmer2));
        pci_read_config_byte(params->cs55x0, PCI_MODON, &(params->on_duration));
        pci_read_config_byte(params->cs55x0, PCI_MODOFF, &(params->off_duration));
-        pci_read_config_byte(params->cs55x0, PCI_REVISION_ID, &params->pci_rev);
        if ((ret = cpufreq_register_driver(&gx_suspmod_driver))) {
                kfree(params);
diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-ich.c b/arch/i386/kernel/cpu/cpufreq/speedstep-ich.c
index 698f980eb443..a5b2346faf1f 100644
--- a/arch/i386/kernel/cpu/cpufreq/speedstep-ich.c
+++ b/arch/i386/kernel/cpu/cpufreq/speedstep-ich.c
@@ -205,7 +205,6 @@ static unsigned int speedstep_detect_chipset (void)
                 * host brige. Abort on these systems.
                 */
                static struct pci_dev *hostbridge;
-                u8 rev = 0;
                hostbridge  = pci_get_subsys(PCI_VENDOR_ID_INTEL,
                              PCI_DEVICE_ID_INTEL_82815_MC,
@@ -216,8 +215,7 @@ static unsigned int speedstep_detect_chipset (void)
                if (!hostbridge)
                        return 2; /* 2-M */
-                pci_read_config_byte(hostbridge, PCI_REVISION_ID, &rev);
+                if (hostbridge->revision < 5) {
-                if (rev < 5) {
                        dprintk("hostbridge does not support speedstep\n");
                        speedstep_chipset_dev = NULL;
                        pci_dev_put(hostbridge);
diff --git a/arch/i386/pci/fixup.c b/arch/i386/pci/fixup.c
index b95b42950ed4..e7306dbf6c42 100644
--- a/arch/i386/pci/fixup.c
+++ b/arch/i386/pci/fixup.c
@@ -118,12 +118,9 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, pci
 static void pci_fixup_via_northbridge_bug(struct pci_dev *d)
 {
        u8 v;
-        u8 revision;
        int where = 0x55;
        int mask = 0x1f; /* clear bits 5, 6, 7 by default */
-        pci_read_config_byte(d, PCI_REVISION_ID, &revision);
        if (d->device == PCI_DEVICE_ID_VIA_8367_0) {
                /* fix pci bus latency issues resulted by NB bios error
                   it appears on bug free^Wreduced kt266x's bios forces
@@ -133,8 +130,8 @@ static void pci_fixup_via_northbridge_bug(struct pci_dev *d)
                where = 0x95; /* the memory write queue timer register is 
                                different for the KT266x's: 0x95 not 0x55 */
        } else if (d->device == PCI_DEVICE_ID_VIA_8363_0 &&
-                        (revision == VIA_8363_KL133_REVISION_ID || 
+                        (d->revision == VIA_8363_KL133_REVISION_ID ||
-                        revision == VIA_8363_KM133_REVISION_ID)) {
+                        d->revision == VIA_8363_KM133_REVISION_ID)) {
                        mask = 0x3f; /* clear only bits 6 and 7; clearing bit 5
                                        causes screen corruption on the KL133/KM133 */
        }
@@ -142,7 +139,7 @@ static void pci_fixup_via_northbridge_bug(struct pci_dev *d)
        pci_read_config_byte(d, where, &v);
        if (v & ~mask) {
                printk(KERN_WARNING "Disabling VIA memory write queue (PCI ID %04x, rev %02x): [%02x] %02x & %02x -> %02x\n", \
-                        d->device, revision, where, v, mask, v & mask);
+                        d->device, d->revision, where, v, mask, v & mask);
                v &= mask;
                pci_write_config_byte(d, where, v);
        }
diff --git a/arch/mips/pci/fixup-cobalt.c b/arch/mips/pci/fixup-cobalt.c
index 7fc475f7eae5..76b4f0ffb1e5 100644
--- a/arch/mips/pci/fixup-cobalt.c
+++ b/arch/mips/pci/fixup-cobalt.c
@@ -58,8 +58,6 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_1,
 static void qube_raq_galileo_fixup(struct pci_dev *dev)
 {
-        unsigned short galileo_id;
        if (dev->devfn != PCI_DEVFN(0, 0))
                return;
@@ -84,16 +82,14 @@ static void qube_raq_galileo_fixup(struct pci_dev *dev)
         * Therefore we must set the disconnect/retry cycle values to
         * something sensible when using the new Galileo.
         */
-        pci_read_config_word(dev, PCI_REVISION_ID, &galileo_id);
-        galileo_id &= 0xff;     /* mask off class info */
-        printk(KERN_INFO "Galileo: revision %u\n", galileo_id);
+        printk(KERN_INFO "Galileo: revision %u\n", dev->revision);
 #if 0
-        if (galileo_id >= 0x10) {
+        if (dev->revision >= 0x10) {
                /* New Galileo, assumes PCI stop line to VIA is connected. */
                GT_WRITE(GT_PCI0_TOR_OFS, 0x4020);
-        } else if (galileo_id == 0x1 || galileo_id == 0x2)
+        } else if (dev->revision == 0x1 || dev->revision == 0x2)
 #endif
        {
                signed int timeo;
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index f7de02a6f497..e1ca86dfdd66 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -115,7 +115,6 @@ struct acpi_processor_errata errata __read_mostly;
 static int acpi_processor_errata_piix4(struct pci_dev *dev)
 {
-        u8 rev = 0;
        u8 value1 = 0;
        u8 value2 = 0;
@@ -127,9 +126,7 @@ static int acpi_processor_errata_piix4(struct pci_dev *dev)
         * Note that 'dev' references the PIIX4 ACPI Controller.
         */
-        pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
+        switch (dev->revision) {
-        switch (rev) {
        case 0:
                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4 A-step\n"));
                break;
@@ -147,7 +144,7 @@ static int acpi_processor_errata_piix4(struct pci_dev *dev)
                break;
        }
-        switch (rev) {
+        switch (dev->revision) {
        case 0:         /* PIIX4 A-step */
        case 1:         /* PIIX4 B-step */
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 6a3bfef58e13..2610db75f984 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -928,20 +928,18 @@ static int __devinit piix_check_450nx_errata(struct pci_dev *ata_dev)
 {
        struct pci_dev *pdev = NULL;
        u16 cfg;
-        u8 rev;
        int no_piix_dma = 0;
        while((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL)
        {
                /* Look for 450NX PXB. Check for problem configurations
                   A PCI quirk checks bit 6 already */
-                pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
                pci_read_config_word(pdev, 0x41, &cfg);
                /* Only on the original revision: IDE DMA can hang */
-                if (rev == 0x00)
+                if (pdev->revision == 0x00)
                        no_piix_dma = 1;
                /* On all revisions below 5 PXB bus lock must be disabled for IDE */
-                else if (cfg & (1<<14) && rev < 5)
+                else if (cfg & (1<<14) && pdev->revision < 5)
                        no_piix_dma = 2;
        }
        if (no_piix_dma)
diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c
index 30c4276ec882..010436795d20 100644
--- a/drivers/ata/pata_ali.c
+++ b/drivers/ata/pata_ali.c
@@ -455,23 +455,21 @@ static struct ata_port_operations ali_c5_port_ops = {
 static void ali_init_chipset(struct pci_dev *pdev)
 {
-        u8 rev, tmp;
+        u8 tmp;
        struct pci_dev *north, *isa_bridge;
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
        /*
         * The chipset revision selects the driver operations and
         * mode data.
         */
-        if (rev >= 0x20 && rev < 0xC2) {
+        if (pdev->revision >= 0x20 && pdev->revision < 0xC2) {
                /* 1543-E/F, 1543C-C, 1543C-D, 1543C-E */
                pci_read_config_byte(pdev, 0x4B, &tmp);
                /* Clear CD-ROM DMA write bit */
                tmp &= 0x7F;
                pci_write_config_byte(pdev, 0x4B, tmp);
-        } else if (rev >= 0xC2) {
+        } else if (pdev->revision >= 0xC2) {
                /* Enable cable detection logic */
                pci_read_config_byte(pdev, 0x4B, &tmp);
                pci_write_config_byte(pdev, 0x4B, tmp | 0x08);
@@ -483,21 +481,21 @@ static void ali_init_chipset(struct pci_dev *pdev)
                /* Configure the ALi bridge logic. For non ALi rely on BIOS.
                   Set the south bridge enable bit */
                pci_read_config_byte(isa_bridge, 0x79, &tmp);
-                if (rev == 0xC2)
+                if (pdev->revision == 0xC2)
                        pci_write_config_byte(isa_bridge, 0x79, tmp | 0x04);
-                else if (rev > 0xC2 && rev < 0xC5)
+                else if (pdev->revision > 0xC2 && pdev->revision < 0xC5)
                        pci_write_config_byte(isa_bridge, 0x79, tmp | 0x02);
        }
-        if (rev >= 0x20) {
+        if (pdev->revision >= 0x20) {
                /*
                 * CD_ROM DMA on (0x53 bit 0). Enable this even if we want
                 * to use PIO. 0x53 bit 1 (rev 20 only) - enable FIFO control
                 * via 0x54/55.
                 */
                pci_read_config_byte(pdev, 0x53, &tmp);
-                if (rev <= 0x20)
+                if (pdev->revision <= 0x20)
                        tmp &= ~0x02;
-                if (rev >= 0xc7)
+                if (pdev->revision >= 0xc7)
                        tmp |= 0x03;
                else
                        tmp |= 0x01;    /* CD_ROM enable for DMA */
@@ -579,25 +577,23 @@ static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
        };
        const struct ata_port_info *ppi[] = { NULL, NULL };
-        u8 rev, tmp;
+        u8 tmp;
        struct pci_dev *isa_bridge;
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
        /*
         * The chipset revision selects the driver operations and
         * mode data.
         */
-        if (rev < 0x20) {
+        if (pdev->revision < 0x20) {
                ppi[0] = &info_early;
-        } else if (rev < 0xC2) {
+        } else if (pdev->revision < 0xC2) {
                ppi[0] = &info_20;
-        } else if (rev == 0xC2) {
+        } else if (pdev->revision == 0xC2) {
                ppi[0] = &info_c2;
-        } else if (rev == 0xC3) {
+        } else if (pdev->revision == 0xC3) {
                ppi[0] = &info_c3;
-        } else if (rev == 0xC4) {
+        } else if (pdev->revision == 0xC4) {
                ppi[0] = &info_c4;
        } else
                ppi[0] = &info_c5;
@@ -605,7 +601,7 @@ static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
        ali_init_chipset(pdev);
        isa_bridge = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
-        if (isa_bridge && rev >= 0x20 && rev < 0xC2) {
+        if (isa_bridge && pdev->revision >= 0x20 && pdev->revision < 0xC2) {
                /* Are we paired with a UDMA capable chip */
                pci_read_config_byte(isa_bridge, 0x5E, &tmp);
                if ((tmp & 0x1E) == 0x12)
diff --git a/drivers/ata/pata_amd.c b/drivers/ata/pata_amd.c
index b9c44c575ce3..b09facad63e1 100644
--- a/drivers/ata/pata_amd.c
+++ b/drivers/ata/pata_amd.c
@@ -623,17 +623,15 @@ static int amd_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
        const struct ata_port_info *ppi[] = { NULL, NULL };
        static int printed_version;
        int type = id->driver_data;
-        u8 rev;
        u8 fifo;
        if (!printed_version++)
                dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
        pci_read_config_byte(pdev, 0x41, &fifo);
        /* Check for AMD7409 without swdma errata and if found adjust type */
-        if (type == 1 && rev > 0x7)
+        if (type == 1 && pdev->revision > 0x7)
                type = 2;
        /* Check for AMD7411 */
diff --git a/drivers/ata/pata_it821x.c b/drivers/ata/pata_it821x.c
index b67bbf6516ba..430673be1df7 100644
--- a/drivers/ata/pata_it821x.c
+++ b/drivers/ata/pata_it821x.c
@@ -587,8 +587,7 @@ static int it821x_port_start(struct ata_port *ap)
        itdev->want[1][1] = ATA_ANY;
        itdev->last_device = -1;
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &conf);
+        if (pdev->revision == 0x11) {
-        if (conf == 0x10) {
                itdev->timing10 = 1;
                /* Need to disable ATAPI DMA for this case */
                if (!itdev->smart)
diff --git a/drivers/ata/pata_serverworks.c b/drivers/ata/pata_serverworks.c
index 0231aba51ca4..89691541fe59 100644
--- a/drivers/ata/pata_serverworks.c
+++ b/drivers/ata/pata_serverworks.c
@@ -410,11 +410,8 @@ static int serverworks_fixup_osb4(struct pci_dev *pdev)
 static int serverworks_fixup_csb(struct pci_dev *pdev)
 {
-        u8 rev;
        u8 btr;
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
        /* Third Channel Test */
        if (!(PCI_FUNC(pdev->devfn) & 1)) {
                struct pci_dev * findev = NULL;
@@ -456,7 +453,7 @@ static int serverworks_fixup_csb(struct pci_dev *pdev)
        if (!(PCI_FUNC(pdev->devfn) & 1))
                btr |= 0x2;
        else
-                btr |= (rev >= SVWKS_CSB5_REVISION_NEW) ? 0x3 : 0x2;
+                btr |= (pdev->revision >= SVWKS_CSB5_REVISION_NEW) ? 0x3 : 0x2;
        pci_write_config_byte(pdev, 0x5A, btr);
        return btr;
diff --git a/drivers/ata/pata_sis.c b/drivers/ata/pata_sis.c
index 2b4508206a6c..74a021124f3c 100644
--- a/drivers/ata/pata_sis.c
+++ b/drivers/ata/pata_sis.c
@@ -928,9 +928,7 @@ static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
                if (host != NULL) {
                        chipset = sets;                 /* Match found */
                        if (sets->device == 0x630) {    /* SIS630 */
-                                u8 host_rev;
+                                if (host->revision >= 0x30)     /* 630 ET */
-                                pci_read_config_byte(host, PCI_REVISION_ID, &host_rev);
-                                if (host_rev >= 0x30)   /* 630 ET */
                                        chipset = &sis100_early;
                        }
                        break;
@@ -974,7 +972,6 @@ static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
                u16 trueid;
                u8 prefctl;
                u8 idecfg;
-                u8 sbrev;
                /* Try the second unmasking technique */
                pci_read_config_byte(pdev, 0x4a, &idecfg);
@@ -987,11 +984,10 @@ static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
                        lpc_bridge = pci_get_slot(pdev->bus, 0x10); /* Bus 0 Dev 2 Fn 0 */
                        if (lpc_bridge == NULL)
                                break;
-                        pci_read_config_byte(lpc_bridge, PCI_REVISION_ID, &sbrev);
                        pci_read_config_byte(pdev, 0x49, &prefctl);
                        pci_dev_put(lpc_bridge);
-                        if (sbrev == 0x10 && (prefctl & 0x80)) {
+                        if (lpc_bridge->revision == 0x10 && (prefctl & 0x80)) {
                                chipset = &sis133_early;
                                break;
                        }
diff --git a/drivers/ata/pata_sl82c105.c b/drivers/ata/pata_sl82c105.c
index bde734189623..8c2813aa6cdb 100644
--- a/drivers/ata/pata_sl82c105.c
+++ b/drivers/ata/pata_sl82c105.c
@@ -270,7 +270,6 @@ static struct ata_port_operations sl82c105_port_ops = {
 static int sl82c105_bridge_revision(struct pci_dev *pdev)
 {
        struct pci_dev *bridge;
-        u8 rev;
        /*
         * The bridge should be part of the same device, but function 0.
@@ -292,10 +291,8 @@ static int sl82c105_bridge_revision(struct pci_dev *pdev)
        /*
         * We need to find function 0's revision, not function 1
         */
-        pci_read_config_byte(bridge, PCI_REVISION_ID, &rev);
        pci_dev_put(bridge);
-        return rev;
+        return bridge->revision;
 }
diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c
index f0cadbe6aa11..f645fe22cd1e 100644
--- a/drivers/ata/pata_via.c
+++ b/drivers/ata/pata_via.c
@@ -506,7 +506,6 @@ static int via_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
        struct pci_dev *isa = NULL;
        const struct via_isa_bridge *config;
        static int printed_version;
-        u8 t;
        u8 enable;
        u32 timing;
@@ -520,9 +519,8 @@ static int via_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
                        !!(config->flags & VIA_BAD_ID),
                        config->id, NULL))) {
-                        pci_read_config_byte(isa, PCI_REVISION_ID, &t);
+                        if (isa->revision >= config->rev_min &&
-                        if (t >= config->rev_min &&
+                            isa->revision <= config->rev_max)
-                            t <= config->rev_max)
                                break;
                        pci_dev_put(isa);
                }
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 3873b29c80d6..6dcfc628aab1 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -1573,12 +1573,9 @@ static void mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
 static void mv5_reset_bus(struct pci_dev *pdev, void __iomem *mmio)
 {
-        u8 rev_id;
        int early_5080;
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
+        early_5080 = (pdev->device == 0x5080) && (pdev->revision == 0);
-        early_5080 = (pdev->device == 0x5080) && (rev_id == 0);
        if (!early_5080) {
                u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
@@ -2139,17 +2136,14 @@ static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
 {
        struct pci_dev *pdev = to_pci_dev(host->dev);
        struct mv_host_priv *hpriv = host->private_data;
-        u8 rev_id;
        u32 hp_flags = hpriv->hp_flags;
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
        switch(board_idx) {
        case chip_5080:
                hpriv->ops = &mv5xxx_ops;
                hp_flags |= MV_HP_50XX;
-                switch (rev_id) {
+                switch (pdev->revision) {
                case 0x1:
                        hp_flags |= MV_HP_ERRATA_50XXB0;
                        break;
@@ -2169,7 +2163,7 @@ static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
                hpriv->ops = &mv5xxx_ops;
                hp_flags |= MV_HP_50XX;
-                switch (rev_id) {
+                switch (pdev->revision) {
                case 0x0:
                        hp_flags |= MV_HP_ERRATA_50XXB0;
                        break;
@@ -2188,7 +2182,7 @@ static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
        case chip_608x:
                hpriv->ops = &mv6xxx_ops;
-                switch (rev_id) {
+                switch (pdev->revision) {
                case 0x7:
                        hp_flags |= MV_HP_ERRATA_60X1B2;
                        break;
@@ -2209,7 +2203,7 @@ static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
                hp_flags |= MV_HP_GEN_IIE;
-                switch (rev_id) {
+                switch (pdev->revision) {
                case 0x0:
                        hp_flags |= MV_HP_ERRATA_XX42A0;
                        break;
@@ -2337,14 +2331,12 @@ static void mv_print_info(struct ata_host *host)
 {
        struct pci_dev *pdev = to_pci_dev(host->dev);
        struct mv_host_priv *hpriv = host->private_data;
-        u8 rev_id, scc;
+        u8 scc;
        const char *scc_s, *gen;
        /* Use this to determine the HW stepping of the chip so we know
         * what errata to workaround
         */
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
        pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc);
        if (scc == 0)
                scc_s = "SCSI";
diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c
index 0d3a38b1cb0b..77637e780d41 100644
--- a/drivers/atm/eni.c
+++ b/drivers/atm/eni.c
@@ -1704,7 +1704,6 @@ static int __devinit eni_do_init(struct atm_dev *dev)
        struct pci_dev *pci_dev;
        unsigned long real_base;
        void __iomem *base;
-        unsigned char revision;
        int error,i,last;
        DPRINTK(">eni_init\n");
@@ -1715,12 +1714,6 @@ static int __devinit eni_do_init(struct atm_dev *dev)
        pci_dev = eni_dev->pci_dev;
        real_base = pci_resource_start(pci_dev, 0);
        eni_dev->irq = pci_dev->irq;
-        error = pci_read_config_byte(pci_dev,PCI_REVISION_ID,&revision);
-        if (error) {
-                printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%02x\n",
-                    dev->number,error);
-                return -EINVAL;
-        }
        if ((error = pci_write_config_word(pci_dev,PCI_COMMAND,
            PCI_COMMAND_MEMORY |
            (eni_dev->asic ? PCI_COMMAND_PARITY | PCI_COMMAND_SERR : 0)))) {
@@ -1729,7 +1722,7 @@ static int __devinit eni_do_init(struct atm_dev *dev)
                return -EIO;
        }
        printk(KERN_NOTICE DEV_LABEL "(itf %d): rev.%d,base=0x%lx,irq=%d,",
-            dev->number,revision,real_base,eni_dev->irq);
+            dev->number,pci_dev->revision,real_base,eni_dev->irq);
        if (!(base = ioremap_nocache(real_base,MAP_MAX_SIZE))) {
                printk("\n");
                printk(KERN_ERR DEV_LABEL "(itf %d): can't set up page "
diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c
index 3800bc0cb2ef..8f995ce8d73b 100644
--- a/drivers/atm/idt77252.c
+++ b/drivers/atm/idt77252.c
@@ -3679,7 +3679,6 @@ idt77252_init_one(struct pci_dev *pcidev, const struct pci_device_id *id)
        unsigned long membase, srambase;
        struct idt77252_dev *card;
        struct atm_dev *dev;
-        ushort revision = 0;
        int i, err;
@@ -3688,19 +3687,13 @@ idt77252_init_one(struct pci_dev *pcidev, const struct pci_device_id *id)
                return err;
        }
-        if (pci_read_config_word(pcidev, PCI_REVISION_ID, &revision)) {
-                printk("idt77252-%d: can't read PCI_REVISION_ID\n", index);
-                err = -ENODEV;
-                goto err_out_disable_pdev;
-        }
        card = kzalloc(sizeof(struct idt77252_dev), GFP_KERNEL);
        if (!card) {
                printk("idt77252-%d: can't allocate private data\n", index);
                err = -ENOMEM;
                goto err_out_disable_pdev;
        }
-        card->revision = revision;
+        card->revision = pcidev->revision;
        card->index = index;
        card->pcidev = pcidev;
        sprintf(card->name, "idt77252-%d", card->index);
@@ -3762,8 +3755,8 @@ idt77252_init_one(struct pci_dev *pcidev, const struct pci_device_id *id)
        }
        printk("%s: ABR SAR (Rev %c): MEM %08lx SRAM %08lx [%u KB]\n",
-               card->name, ((revision > 1) && (revision < 25)) ?
+               card->name, ((card->revision > 1) && (card->revision < 25)) ?
-               'A' + revision - 1 : '?', membase, srambase,
+               'A' + card->revision - 1 : '?', membase, srambase,
               card->sramsize / 1024);
        if (init_card(dev)) {
diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c
index bb7ef570514c..a3b605a0ca17 100644
--- a/drivers/atm/iphase.c
+++ b/drivers/atm/iphase.c
@@ -2290,7 +2290,6 @@ static int __devinit ia_init(struct atm_dev *dev)
        unsigned long real_base;
        void __iomem *base;
        unsigned short command;  
-        unsigned char revision;  
        int error, i; 
          
        /* The device has been identified and registered. Now we read   
@@ -2305,16 +2304,14 @@ static int __devinit ia_init(struct atm_dev *dev)
        real_base = pci_resource_start (iadev->pci, 0);
        iadev->irq = iadev->pci->irq;
                  
-        if ((error = pci_read_config_word(iadev->pci, PCI_COMMAND,&command))   
+        error = pci_read_config_word(iadev->pci, PCI_COMMAND, &command);
-                    || (error = pci_read_config_byte(iadev->pci,   
+        if (error) {
-                                PCI_REVISION_ID,&revision)))   
-        {  
                printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%x\n",  
                                dev->number,error);  
                return -EINVAL;  
        }  
        IF_INIT(printk(DEV_LABEL "(itf %d): rev.%d,realbase=0x%lx,irq=%d\n",  
-                        dev->number, revision, real_base, iadev->irq);)  
+                        dev->number, iadev->pci->revision, real_base, iadev->irq);)
          
        /* find mapping size of board */  
          
@@ -2353,7 +2350,7 @@ static int __devinit ia_init(struct atm_dev *dev)
                return error;  
        }  
        IF_INIT(printk(DEV_LABEL " (itf %d): rev.%d,base=%p,irq=%d\n",  
-                        dev->number, revision, base, iadev->irq);)  
+                        dev->number, iadev->pci->revision, base, iadev->irq);)
          
        /* filling the iphase dev structure */  
        iadev->mem = iadev->pci_map_size /2;  
diff --git a/drivers/atm/lanai.c b/drivers/atm/lanai.c
index 09f477d4237a..203c70378b15 100644
--- a/drivers/atm/lanai.c
+++ b/drivers/atm/lanai.c
@@ -293,7 +293,6 @@ struct lanai_dev {
        struct atm_vcc *cbrvcc;
        int number;
        int board_rev;
-        u8 pci_revision;
 /* TODO - look at race conditions with maintence of conf1/conf2 */
 /* TODO - transmit locking: should we use _irq not _irqsave? */
 /* TODO - organize above in some rational fashion (see <asm/cache.h>) */
@@ -1969,14 +1968,6 @@ static int __devinit lanai_pci_start(struct lanai_dev *lanai)
                    "(itf %d): No suitable DMA available.\n", lanai->number);
                return -EBUSY;
        }
-        /* Get the pci revision byte */
-        result = pci_read_config_byte(pci, PCI_REVISION_ID,
-            &lanai->pci_revision);
-        if (result != PCIBIOS_SUCCESSFUL) {
-                printk(KERN_ERR DEV_LABEL "(itf %d): can't read "
-                    "PCI_REVISION_ID: %d\n", lanai->number, result);
-                return -EINVAL;
-        }
        result = pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &w);
        if (result != PCIBIOS_SUCCESSFUL) {
                printk(KERN_ERR DEV_LABEL "(itf %d): can't read "
@@ -2254,7 +2245,7 @@ static int __devinit lanai_dev_open(struct atm_dev *atmdev)
        lanai_timed_poll_start(lanai);
        printk(KERN_NOTICE DEV_LABEL "(itf %d): rev.%d, base=0x%lx, irq=%u "
            "(%02X-%02X-%02X-%02X-%02X-%02X)\n", lanai->number,
-            (int) lanai->pci_revision, (unsigned long) lanai->base,
+            (int) lanai->pci->revision, (unsigned long) lanai->base,
            lanai->pci->irq,
            atmdev->esi[0], atmdev->esi[1], atmdev->esi[2],
            atmdev->esi[3], atmdev->esi[4], atmdev->esi[5]);
@@ -2491,7 +2482,7 @@ static int lanai_proc_read(struct atm_dev *atmdev, loff_t *pos, char *page)
                    (unsigned int) lanai->magicno, lanai->num_vci);
        if (left-- == 0)
                return sprintf(page, "revision: board=%d, pci_if=%d\n",
-                    lanai->board_rev, (int) lanai->pci_revision);
+                    lanai->board_rev, (int) lanai->pci->revision);
        if (left-- == 0)
                return sprintf(page, "EEPROM ESI: "
                    "%02X:%02X:%02X:%02X:%02X:%02X\n",
diff --git a/drivers/atm/zatm.c b/drivers/atm/zatm.c
index 2ad2527cf5b3..020a87a476c8 100644
--- a/drivers/atm/zatm.c
+++ b/drivers/atm/zatm.c
@@ -1182,7 +1182,6 @@ static int __devinit zatm_init(struct atm_dev *dev)
        struct zatm_dev *zatm_dev;
        struct pci_dev *pci_dev;
        unsigned short command;
-        unsigned char revision;
        int error,i,last;
        unsigned long t0,t1,t2;
@@ -1192,8 +1191,7 @@ static int __devinit zatm_init(struct atm_dev *dev)
        pci_dev = zatm_dev->pci_dev;
        zatm_dev->base = pci_resource_start(pci_dev, 0);
        zatm_dev->irq = pci_dev->irq;
-        if ((error = pci_read_config_word(pci_dev,PCI_COMMAND,&command)) ||
+        if ((error = pci_read_config_word(pci_dev,PCI_COMMAND,&command))) {
-            (error = pci_read_config_byte(pci_dev,PCI_REVISION_ID,&revision))) {
                printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%02x\n",
                    dev->number,error);
                return -EINVAL;
@@ -1206,7 +1204,7 @@ static int __devinit zatm_init(struct atm_dev *dev)
        }
        eprom_get_esi(dev);
        printk(KERN_NOTICE DEV_LABEL "(itf %d): rev.%d,base=0x%x,irq=%d,",
-            dev->number,revision,zatm_dev->base,zatm_dev->irq);
+            dev->number,pci_dev->revision,zatm_dev->base,zatm_dev->irq);
        /* reset uPD98401 */
        zout(0,SWR);
        while (!(zin(GSR) & uPD98401_INT_IND));
diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c
index e6c534e62846..df0ddf14b85c 100644
--- a/drivers/char/agp/amd-k7-agp.c
+++ b/drivers/char/agp/amd-k7-agp.c
@@ -462,9 +462,7 @@ static int __devinit agp_amdk7_probe(struct pci_dev *pdev,
         * erratum 46: Setup violation on AGP SBA pins - Disable side band addressing.
         * With this lot disabled, we should prevent lockups. */
        if (agp_bridge->dev->device == PCI_DEVICE_ID_AMD_FE_GATE_700E) {
-                u8 revision=0;
+                if (pdev->revision == 0x10 || pdev->revision == 0x11) {
-                pci_read_config_byte(pdev, PCI_REVISION_ID, &revision);
-                if (revision == 0x10 || revision == 0x11) {
                        agp_bridge->flags = AGP_ERRATA_FASTWRITES;
                        agp_bridge->flags |= AGP_ERRATA_SBA;
                        agp_bridge->flags |= AGP_ERRATA_1X;
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index 801abdd29066..d95662e96326 100644
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -367,10 +367,8 @@ static __devinit int cache_nbs (struct pci_dev *pdev, u32 cap_ptr)
 static void __devinit amd8151_init(struct pci_dev *pdev, struct agp_bridge_data *bridge)
 {
        char *revstring;
-        u8 rev_id;
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
+        switch (pdev->revision) {
-        switch (rev_id) {
        case 0x01: revstring="A0"; break;
        case 0x02: revstring="A1"; break;
        case 0x11: revstring="B0"; break;
@@ -386,7 +384,7 @@ static void __devinit amd8151_init(struct pci_dev *pdev, struct agp_bridge_data
         * Work around errata.
         * Chips before B2 stepping incorrectly reporting v3.5
         */
-        if (rev_id < 0x13) {
+        if (pdev->revision < 0x13) {
                printk (KERN_INFO PFX "Correcting AGP revision (reports 3.5, is really 3.0)\n");
                bridge->major_version = 3;
                bridge->minor_version = 0;
diff --git a/drivers/clocksource/acpi_pm.c b/drivers/clocksource/acpi_pm.c
index 5cfcff532545..e783dbf0f162 100644
--- a/drivers/clocksource/acpi_pm.c
+++ b/drivers/clocksource/acpi_pm.c
@@ -105,14 +105,11 @@ static inline void acpi_pm_need_workaround(void)
 */
 static void __devinit acpi_pm_check_blacklist(struct pci_dev *dev)
 {
-        u8 rev;
        if (acpi_pm_good)
                return;
-        pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
        /* the bug has been fixed in PIIX4M */
-        if (rev < 3) {
+        if (dev->revision < 3) {
                printk(KERN_WARNING "* Found PM-Timer Bug on the chipset."
                       " Due to workarounds for a bug,\n"
                       "* this clock source is slow. Consider trying"
diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c
index 7a2bc06304fc..1d76b9e5207a 100644
--- a/drivers/i2c/busses/i2c-viapro.c
+++ b/drivers/i2c/busses/i2c-viapro.c
@@ -397,8 +397,7 @@ found:
        case PCI_DEVICE_ID_VIA_82C686_4:
                /* The VT82C686B (rev 0x40) does support I2C block
                   transactions, but the VT82C686A (rev 0x30) doesn't */
-                if (!pci_read_config_byte(pdev, PCI_REVISION_ID, &temp)
+                if (pdev->revision >= 0x40)
-                 && temp >= 0x40)
                        vt596_features |= FEATURE_I2CBLOCK;
                break;
        }
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c
index 8a6b27b3bcc3..ba0fb92b0417 100644
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -508,7 +508,7 @@ static unsigned int __devinit init_chipset_ali15x3 (struct pci_dev *dev, const c
        u8 tmpbyte;
        struct pci_dev *north = pci_get_slot(dev->bus, PCI_DEVFN(0,0));
-        pci_read_config_byte(dev, PCI_REVISION_ID, &m5229_revision);
+        m5229_revision = dev->revision;
        isa_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
diff --git a/drivers/ide/pci/amd74xx.c b/drivers/ide/pci/amd74xx.c
index 84ed30cdb324..8d30b99a54d8 100644
--- a/drivers/ide/pci/amd74xx.c
+++ b/drivers/ide/pci/amd74xx.c
@@ -123,8 +123,7 @@ static int amd74xx_get_info(char *buffer, char **addr, off_t offset, int count)
        amd_print("Driver Version:                     2.13");
        amd_print("South Bridge:                       %s", pci_name(bmide_dev));
-        pci_read_config_byte(dev, PCI_REVISION_ID, &t);
+        amd_print("Revision:                           IDE %#x", dev->revision);
-        amd_print("Revision:                           IDE %#x", t);
        amd_print("Highest DMA rate:                   UDMA%s", amd_dma[fls(amd_config->udma_mask) - 1]);
        amd_print("BM-DMA base:                        %#lx", amd_base);
@@ -312,8 +311,7 @@ static unsigned int __devinit init_chipset_amd74xx(struct pci_dev *dev, const ch
 */
        if (amd_config->flags & AMD_CHECK_SWDMA) {
-                pci_read_config_byte(dev, PCI_REVISION_ID, &t);
+                if (dev->revision <= 7)
-                if (t <= 7)
                        amd_config->flags |= AMD_BAD_SWDMA;
        }
@@ -383,7 +381,7 @@ static unsigned int __devinit init_chipset_amd74xx(struct pci_dev *dev, const ch
        pci_read_config_byte(dev, PCI_REVISION_ID, &t);
        printk(KERN_INFO "%s: %s (rev %02x) UDMA%s controller\n",
-                amd_chipset->name, pci_name(dev), t,
+                amd_chipset->name, pci_name(dev), dev->revision,
                amd_dma[fls(amd_config->udma_mask) - 1]);
 /*
diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c
index 8631b6c8aa15..1e89dd6e5bbf 100644
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -88,7 +88,6 @@ static char * print_cmd64x_get_info (char *buf, struct pci_dev *dev, int index)
        u8 reg72 = 0, reg73 = 0;                        /* primary */
        u8 reg7a = 0, reg7b = 0;                        /* secondary */
        u8 reg50 = 1, reg51 = 1, reg57 = 0, reg71 = 0;  /* extra */
-        u8 rev = 0;
        p += sprintf(p, "\nController: %d\n", index);
        p += sprintf(p, "PCI-%x Chipset.\n", dev->device);
@@ -103,9 +102,8 @@ static char * print_cmd64x_get_info (char *buf, struct pci_dev *dev, int index)
        (void) pci_read_config_byte(dev, UDIDETCR1, &reg7b);
        /* PCI0643/6 originally didn't have the primary channel enable bit */
-        (void) pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
        if ((dev->device == PCI_DEVICE_ID_CMD_643) ||
-            (dev->device == PCI_DEVICE_ID_CMD_646 && rev < 3))
+            (dev->device == PCI_DEVICE_ID_CMD_646 && dev->revision < 3))
                reg51 |= CNTRL_ENA_1ST;
        p += sprintf(p, "---------------- Primary Channel "
@@ -604,14 +602,11 @@ static int __devinit init_setup_cmd64x(struct pci_dev *dev, ide_pci_device_t *d)
 static int __devinit init_setup_cmd646(struct pci_dev *dev, ide_pci_device_t *d)
 {
-        u8 rev = 0;
        /*
         * The original PCI0646 didn't have the primary channel enable bit,
         * it appeared starting with PCI0646U (i.e. revision ID 3).
         */
-        pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
+        if (dev->revision < 3)
-        if (rev < 3)
                d->enablebits[0].reg = 0;
        return ide_setup_pci_device(dev, d);
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index 4b6bae8eee82..e9b07a97c340 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -1413,11 +1413,9 @@ static int __devinit init_setup_hpt372n(struct pci_dev *dev, ide_pci_device_t *d
 static int __devinit init_setup_hpt371(struct pci_dev *dev, ide_pci_device_t *d)
 {
        struct hpt_info *info;
-        u8 rev = 0, mcr1 = 0;
+        u8 mcr1 = 0;
-        pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
+        if (dev->revision > 1) {
-        if (rev > 1) {
                d->name = "HPT371N";
                info = &hpt371n;
@@ -1442,11 +1440,8 @@ static int __devinit init_setup_hpt371(struct pci_dev *dev, ide_pci_device_t *d)
 static int __devinit init_setup_hpt372a(struct pci_dev *dev, ide_pci_device_t *d)
 {
        struct hpt_info *info;
-        u8 rev = 0;
-        pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
-        if (rev > 1) {
+        if (dev->revision > 1) {
                d->name = "HPT372N";
                info = &hpt372n;
@@ -1460,11 +1455,8 @@ static int __devinit init_setup_hpt372a(struct pci_dev *dev, ide_pci_device_t *d
 static int __devinit init_setup_hpt302(struct pci_dev *dev, ide_pci_device_t *d)
 {
        struct hpt_info *info;
-        u8 rev = 0;
-        pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
+        if (dev->revision > 1) {
-        if (rev > 1) {
                d->name = "HPT302N";
                info = &hpt302n;
@@ -1478,7 +1470,7 @@ static int __devinit init_setup_hpt302(struct pci_dev *dev, ide_pci_device_t *d)
 static int __devinit init_setup_hpt366(struct pci_dev *dev, ide_pci_device_t *d)
 {
        struct pci_dev *dev2;
-        u8 rev = 0;
+        u8 rev = dev->revision;
        static char   *chipset_names[] = { "HPT366", "HPT366",  "HPT368",
                                           "HPT370", "HPT370A", "HPT372",
                                           "HPT372N" };
@@ -1489,8 +1481,6 @@ static int __devinit init_setup_hpt366(struct pci_dev *dev, ide_pci_device_t *d)
        if (PCI_FUNC(dev->devfn) & 1)
                return -ENODEV;
-        pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
        switch (rev) {
        case 0:
        case 1:
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index 2e0b29ef596a..1372c35be035 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -572,18 +572,16 @@ static void __devinit piix_check_450nx(void)
 {
        struct pci_dev *pdev = NULL;
        u16 cfg;
-        u8 rev;
        while((pdev=pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev))!=NULL)
        {
                /* Look for 450NX PXB. Check for problem configurations
                   A PCI quirk checks bit 6 already */
-                pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
                pci_read_config_word(pdev, 0x41, &cfg);
                /* Only on the original revision: IDE DMA can hang */
-                if(rev == 0x00)
+                if (pdev->revision == 0x00)
                        no_piix_dma = 1;
                /* On all revisions below 5 PXB bus lock must be disabled for IDE */
-                else if(cfg & (1<<14) && rev < 5)
+                else if (cfg & (1<<14) && pdev->revision < 5)
                        no_piix_dma = 2;
        }
        if(no_piix_dma)
diff --git a/drivers/ide/pci/serverworks.c b/drivers/ide/pci/serverworks.c
index 1371b5bf6bf0..ed04e0c8dd4c 100644
--- a/drivers/ide/pci/serverworks.c
+++ b/drivers/ide/pci/serverworks.c
@@ -55,7 +55,6 @@ static const char *svwks_bad_ata100[] = {
        NULL
 };
-static u8 svwks_revision = 0;
 static struct pci_dev *isa_dev;
 static int check_in_drive_lists (ide_drive_t *drive, const char **list)
@@ -71,9 +70,6 @@ static u8 svwks_udma_filter(ide_drive_t *drive)
        struct pci_dev *dev     = HWIF(drive)->pci_dev;
        u8 mask = 0;
-        if (!svwks_revision)
-                pci_read_config_byte(dev, PCI_REVISION_ID, &svwks_revision);
        if (dev->device == PCI_DEVICE_ID_SERVERWORKS_HT1000IDE)
                return 0x1f;
        if (dev->device == PCI_DEVICE_ID_SERVERWORKS_OSB4IDE) {
@@ -88,9 +84,9 @@ static u8 svwks_udma_filter(ide_drive_t *drive)
                        return 0;
                /* Check the OSB4 DMA33 enable bit */
                return ((reg & 0x00004000) == 0x00004000) ? 0x07 : 0;
-        } else if (svwks_revision < SVWKS_CSB5_REVISION_NEW) {
+        } else if (dev->revision < SVWKS_CSB5_REVISION_NEW) {
                return 0x07;
-        } else if (svwks_revision >= SVWKS_CSB5_REVISION_NEW) {
+        } else if (dev->revision >= SVWKS_CSB5_REVISION_NEW) {
                u8 btr = 0, mode;
                pci_read_config_byte(dev, 0x5A, &btr);
                mode = btr & 0x3;
@@ -234,9 +230,6 @@ static unsigned int __devinit init_chipset_svwks (struct pci_dev *dev, const cha
        unsigned int reg;
        u8 btr;
-        /* save revision id to determine DMA capability */
-        pci_read_config_byte(dev, PCI_REVISION_ID, &svwks_revision);
        /* force Master Latency Timer value to 64 PCICLKs */
        pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x40);
@@ -315,7 +308,7 @@ static unsigned int __devinit init_chipset_svwks (struct pci_dev *dev, const cha
                if (!(PCI_FUNC(dev->devfn) & 1))
                        btr |= 0x2;
                else
-                        btr |= (svwks_revision >= SVWKS_CSB5_REVISION_NEW) ? 0x3 : 0x2;
+                        btr |= (dev->revision >= SVWKS_CSB5_REVISION_NEW) ? 0x3 : 0x2;
                pci_write_config_byte(dev, 0x5A, btr);
        }
        /* Setup HT1000 SouthBridge Controller - Single Channel Only */
diff --git a/drivers/ide/pci/sis5513.c b/drivers/ide/pci/sis5513.c
index f875183ac8d9..756a9b6eb462 100644
--- a/drivers/ide/pci/sis5513.c
+++ b/drivers/ide/pci/sis5513.c
@@ -659,9 +659,7 @@ static unsigned int __devinit init_chipset_sis5513 (struct pci_dev *dev, const c
                /* Special case for SiS630 : 630S/ET is ATA_100a */
                if (SiSHostChipInfo[i].host_id == PCI_DEVICE_ID_SI_630) {
-                        u8 hostrev;
+                        if (host->revision >= 0x30)
-                        pci_read_config_byte(host, PCI_REVISION_ID, &hostrev);
-                        if (hostrev >= 0x30)
                                chipset_family = ATA_100a;
                }
                pci_dev_put(host);
@@ -702,7 +700,6 @@ static unsigned int __devinit init_chipset_sis5513 (struct pci_dev *dev, const c
                        u16 trueid;
                        u8 prefctl;
                        u8 idecfg;
-                        u8 sbrev;
                        pci_read_config_byte(dev, 0x4a, &idecfg);
                        pci_write_config_byte(dev, 0x4a, idecfg | 0x10);
@@ -712,11 +709,10 @@ static unsigned int __devinit init_chipset_sis5513 (struct pci_dev *dev, const c
                        if (trueid == 0x5517) { /* SiS 961/961B */
                                lpc_bridge = pci_get_slot(dev->bus, 0x10); /* Bus 0, Dev 2, Fn 0 */
-                                pci_read_config_byte(lpc_bridge, PCI_REVISION_ID, &sbrev);
                                pci_read_config_byte(dev, 0x49, &prefctl);
                                pci_dev_put(lpc_bridge);
-                                if (sbrev == 0x10 && (prefctl & 0x80)) {
+                                if (lpc_bridge->revision == 0x10 && (prefctl & 0x80)) {
                                        printk(KERN_INFO "SIS5513: SiS 961B MuTIOL IDE UDMA133 controller\n");
                                        chipset_family = ATA_133a;
                                } else {
diff --git a/drivers/ide/pci/sl82c105.c b/drivers/ide/pci/sl82c105.c
index 487879842af4..a7323d278c49 100644
--- a/drivers/ide/pci/sl82c105.c
+++ b/drivers/ide/pci/sl82c105.c
@@ -338,7 +338,6 @@ static void sl82c105_tune_drive(ide_drive_t *drive, u8 pio)
 static unsigned int sl82c105_bridge_revision(struct pci_dev *dev)
 {
        struct pci_dev *bridge;
-        u8 rev;
        /*
         * The bridge should be part of the same device, but function 0.
@@ -360,10 +359,9 @@ static unsigned int sl82c105_bridge_revision(struct pci_dev *dev)
        /*
         * We need to find function 0's revision, not function 1
         */
-        pci_read_config_byte(bridge, PCI_REVISION_ID, &rev);
        pci_dev_put(bridge);
-        return rev;
+        return bridge->revision;
 }
 /*
diff --git a/drivers/ide/pci/via82cxxx.c b/drivers/ide/pci/via82cxxx.c
index d21dd2e7eeb3..27e92fb9f95e 100644
--- a/drivers/ide/pci/via82cxxx.c
+++ b/drivers/ide/pci/via82cxxx.c
@@ -237,16 +237,14 @@ static int via82cxxx_ide_dma_check (ide_drive_t *drive)
 static struct via_isa_bridge *via_config_find(struct pci_dev **isa)
 {
        struct via_isa_bridge *via_config;
-        u8 t;
        for (via_config = via_isa_bridges; via_config->id; via_config++)
                if ((*isa = pci_get_device(PCI_VENDOR_ID_VIA +
                        !!(via_config->flags & VIA_BAD_ID),
                        via_config->id, NULL))) {
-                        pci_read_config_byte(*isa, PCI_REVISION_ID, &t);
+                        if ((*isa)->revision >= via_config->rev_min &&
-                        if (t >= via_config->rev_min &&
+                            (*isa)->revision <= via_config->rev_max)
-                            t <= via_config->rev_max)
                                break;
                        pci_dev_put(*isa);
                }
@@ -404,10 +402,9 @@ static unsigned int __devinit init_chipset_via82cxxx(struct pci_dev *dev, const
         * Print the boot message.
         */
-        pci_read_config_byte(isa, PCI_REVISION_ID, &t);
        printk(KERN_INFO "VP_IDE: VIA %s (rev %02x) IDE %sDMA%s "
                "controller on pci%s\n",
-                via_config->name, t,
+                via_config->name, isa->revision,
                via_config->udma_mask ? "U" : "MW",
                via_dma[via_config->udma_mask ?
                        (fls(via_config->udma_mask) - 1) : 0],
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c
index e3a223209710..834e86f6c04e 100644
--- a/drivers/infiniband/hw/ipath/ipath_driver.c
+++ b/drivers/infiniband/hw/ipath/ipath_driver.c
@@ -270,7 +270,6 @@ static int __devinit ipath_init_one(struct pci_dev *pdev,
        struct ipath_devdata *dd;
        unsigned long long addr;
        u32 bar0 = 0, bar1 = 0;
-        u8 rev;
        dd = ipath_alloc_devdata(pdev);
        if (IS_ERR(dd)) {
@@ -432,13 +431,7 @@ static int __devinit ipath_init_one(struct pci_dev *pdev,
        dd->ipath_deviceid = ent->device;       /* save for later use */
        dd->ipath_vendorid = ent->vendor;
-        ret = pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
+        dd->ipath_pcirev = pdev->revision;
-        if (ret) {
-                ipath_dev_err(dd, "Failed to read PCI revision ID unit "
-                              "%u: err %d\n", dd->ipath_unit, -ret);
-                goto bail_regions;      /* shouldn't ever happen */
-        }
-        dd->ipath_pcirev = rev;
 #if defined(__powerpc__)
        /* There isn't a generic way to specify writethrough mappings */
diff --git a/drivers/isdn/hisax/bkm_a8.c b/drivers/isdn/hisax/bkm_a8.c
index 340310645346..6339bb443f62 100644
--- a/drivers/isdn/hisax/bkm_a8.c
+++ b/drivers/isdn/hisax/bkm_a8.c
@@ -287,7 +287,6 @@ setup_sct_quadro(struct IsdnCard *card)
 #ifdef CONFIG_PCI
        struct IsdnCardState *cs = card->cs;
        char tmp[64];
-        u_char pci_rev_id;
        u_int found = 0;
        u_int pci_ioaddr1, pci_ioaddr2, pci_ioaddr3, pci_ioaddr4, pci_ioaddr5;
@@ -335,8 +334,7 @@ setup_sct_quadro(struct IsdnCard *card)
                }
 #ifdef ATTEMPT_PCI_REMAPPING
 /* HACK: PLX revision 1 bug: PLX address bit 7 must not be set */
-                pci_read_config_byte(dev_a8, PCI_REVISION_ID, &pci_rev_id);
+                if ((pci_ioaddr1 & 0x80) && (dev_a8->revision == 1)) {
-                if ((pci_ioaddr1 & 0x80) && (pci_rev_id == 1)) {
                        printk(KERN_WARNING "HiSax: %s (%s): PLX rev 1, remapping required!\n",
                                CardType[card->typ],
                                sct_quadro_subtypes[cs->subtyp]);
diff --git a/drivers/media/radio/radio-gemtek-pci.c b/drivers/media/radio/radio-gemtek-pci.c
index fdf5d6e46eac..5e6f17df204b 100644
--- a/drivers/media/radio/radio-gemtek-pci.c
+++ b/drivers/media/radio/radio-gemtek-pci.c
@@ -94,7 +94,6 @@ struct gemtek_pci_card {
        u32 iobase;
        u32 length;
-        u8  chiprev;
        u16 model;
        u32 current_frequency;
@@ -415,7 +414,6 @@ static int __devinit gemtek_pci_probe( struct pci_dev *pci_dev, const struct pci
                goto err_pci;
        }
-        pci_read_config_byte( pci_dev, PCI_REVISION_ID, &card->chiprev );
        pci_read_config_word( pci_dev, PCI_SUBSYSTEM_ID, &card->model );
        pci_set_drvdata( pci_dev, card );
@@ -436,7 +434,7 @@ static int __devinit gemtek_pci_probe( struct pci_dev *pci_dev, const struct pci
        gemtek_pci_mute( card );
        printk( KERN_INFO "Gemtek PCI Radio (rev. %d) found at 0x%04x-0x%04x.\n",
-                card->chiprev, card->iobase, card->iobase + card->length - 1 );
+                pci_dev->revision, card->iobase, card->iobase + card->length - 1 );
        return 0;
diff --git a/drivers/media/video/meye.c b/drivers/media/video/meye.c
index 664aba8b4d85..7533fc203319 100644
--- a/drivers/media/video/meye.c
+++ b/drivers/media/video/meye.c
@@ -1809,7 +1809,6 @@ static int __devinit meye_probe(struct pci_dev *pcidev,
 {
        int ret = -EBUSY;
        unsigned long mchip_adr;
-        u8 revision;
        if (meye.mchip_dev != NULL) {
                printk(KERN_ERR "meye: only one device allowed!\n");
@@ -1885,7 +1884,6 @@ static int __devinit meye_probe(struct pci_dev *pcidev,
                goto outreqirq;
        }
-        pci_read_config_byte(meye.mchip_dev, PCI_REVISION_ID, &revision);
        pci_write_config_byte(meye.mchip_dev, PCI_CACHE_LINE_SIZE, 8);
        pci_write_config_byte(meye.mchip_dev, PCI_LATENCY_TIMER, 64);
@@ -1939,7 +1937,7 @@ static int __devinit meye_probe(struct pci_dev *pcidev,
        printk(KERN_INFO "meye: Motion Eye Camera Driver v%s.\n",
               MEYE_DRIVER_VERSION);
        printk(KERN_INFO "meye: mchip KL5A72002 rev. %d, base %lx, irq %d\n",
-               revision, mchip_adr, meye.mchip_irq);
+               meye.mchip_dev->revision, mchip_adr, meye.mchip_irq);
        return 0;
diff --git a/drivers/net/8139cp.c b/drivers/net/8139cp.c
index 58bbc3e6d0de..807e6992e614 100644
--- a/drivers/net/8139cp.c
+++ b/drivers/net/8139cp.c
@@ -1799,7 +1799,6 @@ static int cp_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
        void __iomem *regs;
        resource_size_t pciaddr;
        unsigned int addr_len, i, pci_using_dac;
-        u8 pci_rev;
 #ifndef MODULE
        static int version_printed;
@@ -1807,13 +1806,11 @@ static int cp_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
                printk("%s", version);
 #endif
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev);
        if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
-            pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pci_rev < 0x20) {
+            pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision < 0x20) {
                dev_err(&pdev->dev,
                           "This (id %04x:%04x rev %02x) is not an 8139C+ compatible chip\n",
-                           pdev->vendor, pdev->device, pci_rev);
+                           pdev->vendor, pdev->device, pdev->revision);
                dev_err(&pdev->dev, "Try the \"8139too\" driver instead.\n");
                return -ENODEV;
        }
diff --git a/drivers/net/8139too.c b/drivers/net/8139too.c
index a844b1fe2dc4..77457c7c6ac2 100644
--- a/drivers/net/8139too.c
+++ b/drivers/net/8139too.c
@@ -931,7 +931,6 @@ static int __devinit rtl8139_init_one (struct pci_dev *pdev,
        int i, addr_len, option;
        void __iomem *ioaddr;
        static int board_idx = -1;
-        u8 pci_rev;
        assert (pdev != NULL);
        assert (ent != NULL);
@@ -949,13 +948,11 @@ static int __devinit rtl8139_init_one (struct pci_dev *pdev,
        }
 #endif
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev);
        if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
-            pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pci_rev >= 0x20) {
+            pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision >= 0x20) {
                dev_info(&pdev->dev,
                           "This (id %04x:%04x rev %02x) is an enhanced 8139C+ chip\n",
-                           pdev->vendor, pdev->device, pci_rev);
+                           pdev->vendor, pdev->device, pdev->revision);
                dev_info(&pdev->dev,
                           "Use the \"8139cp\" driver for improved performance and stability.\n");
        }
diff --git a/drivers/net/atl1/atl1.h b/drivers/net/atl1/atl1.h
index b1c6034e68fa..df4c1a0071aa 100644
--- a/drivers/net/atl1/atl1.h
+++ b/drivers/net/atl1/atl1.h
@@ -210,7 +210,6 @@ struct atl1_hw {
        u16 phy_spd_default;
        u16 dev_rev;
-        u8 revision_id;
        /* spi flash */
        u8 flash_vendor;
diff --git a/drivers/net/atl1/atl1_main.c b/drivers/net/atl1/atl1_main.c
index 3bb40dd4a410..501919eb7f5e 100644
--- a/drivers/net/atl1/atl1_main.c
+++ b/drivers/net/atl1/atl1_main.c
@@ -118,10 +118,6 @@ static int __devinit atl1_sw_init(struct atl1_adapter *adapter)
 {
        struct atl1_hw *hw = &adapter->hw;
        struct net_device *netdev = adapter->netdev;
-        struct pci_dev *pdev = adapter->pdev;
-        /* PCI config space info */
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
        hw->max_frame_size = netdev->mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
        hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index ce3ed67a878e..23958f73c421 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -6363,10 +6363,9 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev)
                while ((amd_8132 = pci_get_device(PCI_VENDOR_ID_AMD,
                                                  PCI_DEVICE_ID_AMD_8132_BRIDGE,
                                                  amd_8132))) {
-                        u8 rev;
-                        pci_read_config_byte(amd_8132, PCI_REVISION_ID, &rev);
+                        if (amd_8132->revision >= 0x10 &&
-                        if (rev >= 0x10 && rev <= 0x13) {
+                            amd_8132->revision <= 0x13) {
                                disable_msi = 1;
                                pci_dev_put(amd_8132);
                                break;
diff --git a/drivers/net/cassini.c b/drivers/net/cassini.c
index 59b9943b077d..805924fc077a 100644
--- a/drivers/net/cassini.c
+++ b/drivers/net/cassini.c
@@ -3422,21 +3422,19 @@ done:
 static void cas_check_pci_invariants(struct cas *cp)
 {
        struct pci_dev *pdev = cp->pdev;
-        u8 rev;
        cp->cas_flags = 0;
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
        if ((pdev->vendor == PCI_VENDOR_ID_SUN) &&
            (pdev->device == PCI_DEVICE_ID_SUN_CASSINI)) {
-                if (rev >= CAS_ID_REVPLUS)
+                if (pdev->revision >= CAS_ID_REVPLUS)
                        cp->cas_flags |= CAS_FLAG_REG_PLUS;
-                if (rev < CAS_ID_REVPLUS02u)
+                if (pdev->revision < CAS_ID_REVPLUS02u)
                        cp->cas_flags |= CAS_FLAG_TARGET_ABORT;
                /* Original Cassini supports HW CSUM, but it's not
                 * enabled by default as it can trigger TX hangs.
                 */
-                if (rev < CAS_ID_REV2)
+                if (pdev->revision < CAS_ID_REV2)
                        cp->cas_flags |= CAS_FLAG_NO_HW_CSUM;
        } else {
                /* Only sun has original cassini chips.  */
diff --git a/drivers/net/dl2k.c b/drivers/net/dl2k.c
index 74ec64a1625d..fab4fc9f7fd0 100644
--- a/drivers/net/dl2k.c
+++ b/drivers/net/dl2k.c
@@ -250,7 +250,6 @@ rio_probe1 (struct pci_dev *pdev, const struct pci_device_id *ent)
                        np->an_enable = 1;
                mii_set_media (dev);
        }
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &np->pci_rev_id);
        err = register_netdev (dev);
        if (err)
@@ -879,7 +878,7 @@ receive_packet (struct net_device *dev)
                        skb->protocol = eth_type_trans (skb, dev);
 #if 0
                        /* Checksum done by hw, but csum value unavailable. */
-                        if (np->pci_rev_id >= 0x0c &&
+                        if (np->pdev->pci_rev_id >= 0x0c &&
                                !(frame_status & (TCPError | UDPError | IPError))) {
                                skb->ip_summed = CHECKSUM_UNNECESSARY;
                        }
diff --git a/drivers/net/dl2k.h b/drivers/net/dl2k.h
index 814c449c359f..e443065a452e 100644
--- a/drivers/net/dl2k.h
+++ b/drivers/net/dl2k.h
@@ -668,7 +668,6 @@ struct netdev_private {
        unsigned int rx_flow:1;         /* Rx flow control enable */
        unsigned int phy_media:1;       /* 1: fiber, 0: copper */
        unsigned int link_status:1;     /* Current link status */
-        unsigned char pci_rev_id;       /* PCI revision ID */
        struct netdev_desc *last_tx;    /* Last Tx descriptor used. */
        unsigned long cur_rx, old_rx;   /* Producer/consumer ring indices */
        unsigned long cur_tx, old_tx;
diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index 74ea6373c7cd..6b6401e9304e 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c
@@ -583,7 +583,6 @@ struct nic {
        u32 rx_tco_frames;
        u32 rx_over_length_errors;
-        u8 rev_id;
        u16 leds;
        u16 eeprom_wc;
        u16 eeprom[256];
@@ -937,9 +936,8 @@ static void e100_get_defaults(struct nic *nic)
        struct param_range rfds = { .min = 16, .max = 256, .count = 256 };
        struct param_range cbs  = { .min = 64, .max = 256, .count = 128 };
-        pci_read_config_byte(nic->pdev, PCI_REVISION_ID, &nic->rev_id);
        /* MAC type is encoded as rev ID; exception: ICH is treated as 82559 */
-        nic->mac = (nic->flags & ich) ? mac_82559_D101M : nic->rev_id;
+        nic->mac = (nic->flags & ich) ? mac_82559_D101M : nic->pdev->revision;
        if(nic->mac == mac_unknown)
                nic->mac = mac_82557_D100_A;
@@ -1279,7 +1277,7 @@ static void e100_setup_ucode(struct nic *nic, struct cb *cb, struct sk_buff *skb
        if (nic->flags & ich)
                goto noloaducode;
-        /* Search for ucode match against h/w rev_id */
+        /* Search for ucode match against h/w revision */
        for (opts = ucode_opts; opts->mac; opts++) {
                int i;
                u32 *ucode = opts->ucode;
@@ -2238,7 +2236,7 @@ static void e100_get_regs(struct net_device *netdev,
        u32 *buff = p;
        int i;
-        regs->version = (1 << 24) | nic->rev_id;
+        regs->version = (1 << 24) | nic->pdev->revision;
        buff[0] = ioread8(&nic->csr->scb.cmd_hi) << 24 |
                ioread8(&nic->csr->scb.cmd_lo) << 16 |
                ioread16(&nic->csr->scb.status);
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index cf8af928a69c..f48b659e0c2b 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -1266,8 +1266,7 @@ e1000_sw_init(struct e1000_adapter *adapter)
        hw->device_id = pdev->device;
        hw->subsystem_vendor_id = pdev->subsystem_vendor;
        hw->subsystem_id = pdev->subsystem_device;
+        hw->revision_id = pdev->revision;
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
        pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index 42ba1c012ee2..67046e8c21eb 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -5084,15 +5084,13 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
        np->wolenabled = 0;
        if (id->driver_data & DEV_HAS_POWER_CNTRL) {
-                u8 revision_id;
-                pci_read_config_byte(pci_dev, PCI_REVISION_ID, &revision_id);
                /* take phy and nic out of low power mode */
                powerstate = readl(base + NvRegPowerState2);
                powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
                if ((id->device == PCI_DEVICE_ID_NVIDIA_NVENET_12 ||
                     id->device == PCI_DEVICE_ID_NVIDIA_NVENET_13) &&
-                    revision_id >= 0xA3)
+                    pci_dev->revision >= 0xA3)
                        powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
                writel(powerstate, base + NvRegPowerState2);
        }
diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index 56f8197b953b..b703ccfe040b 100644
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -54,8 +54,6 @@ static char netxen_nic_driver_string[] = "NetXen Network Driver version "
 #define NETXEN_ADAPTER_UP_MAGIC 777
 #define NETXEN_NIC_PEG_TUNE 0
-u8 nx_p2_id = NX_P2_C0;
 #define DMA_32BIT_MASK  0x00000000ffffffffULL
 #define DMA_35BIT_MASK  0x00000007ffffffffULL
@@ -307,8 +305,7 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
                goto err_out_disable_pdev;
        pci_set_master(pdev);
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &nx_p2_id);
+        if (pdev->revision == NX_P2_C1 &&
-        if (nx_p2_id == NX_P2_C1 &&
            (pci_set_dma_mask(pdev, DMA_35BIT_MASK) == 0) &&
            (pci_set_consistent_dma_mask(pdev, DMA_35BIT_MASK) == 0)) {
                pci_using_dac = 1;
@@ -552,7 +549,7 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
        INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
        adapter->ahw.pdev = pdev;
        adapter->proc_cmd_buf_counter = 0;
-        adapter->ahw.revision_id = nx_p2_id;
+        adapter->ahw.revision_id = pdev->revision;
        /* make sure Window == 1 */
        netxen_nic_pci_change_crbwindow(adapter, 1);
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index fa29a403a247..58bbfdd4f901 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -1135,7 +1135,7 @@ static int init_nic(struct s2io_nic *nic)
         * SXE-008 TRANSMIT DMA ARBITRATION ISSUE.
         */
        if ((nic->device_type == XFRAME_I_DEVICE) &&
-                (get_xena_rev_id(nic->pdev) < 4))
+                (nic->pdev->revision < 4))
                writeq(PCC_ENABLE_FOUR, &bar0->pcc_enable);
        val64 = readq(&bar0->tx_fifo_partition_0);
@@ -1873,7 +1873,7 @@ static int verify_pcc_quiescent(struct s2io_nic *sp, int flag)
        herc = (sp->device_type == XFRAME_II_DEVICE);
        if (flag == FALSE) {
-                if ((!herc && (get_xena_rev_id(sp->pdev) >= 4)) || herc) {
+                if ((!herc && (sp->pdev->revision >= 4)) || herc) {
                        if (!(val64 & ADAPTER_STATUS_RMAC_PCC_IDLE))
                                ret = 1;
                } else {
@@ -1881,7 +1881,7 @@ static int verify_pcc_quiescent(struct s2io_nic *sp, int flag)
                                ret = 1;
                }
        } else {
-                if ((!herc && (get_xena_rev_id(sp->pdev) >= 4)) || herc) {
+                if ((!herc && (sp->pdev->revision >= 4)) || herc) {
                        if (((val64 & ADAPTER_STATUS_RMAC_PCC_IDLE) ==
                             ADAPTER_STATUS_RMAC_PCC_IDLE))
                                ret = 1;
@@ -7076,23 +7076,6 @@ static void s2io_link(struct s2io_nic * sp, int link)
 }
 /**
- *  get_xena_rev_id - to identify revision ID of xena.
- *  @pdev : PCI Dev structure
- *  Description:
- *  Function to identify the Revision ID of xena.
- *  Return value:
- *  returns the revision ID of the device.
- */
-static int get_xena_rev_id(struct pci_dev *pdev)
-{
-        u8 id = 0;
-        int ret;
-        ret = pci_read_config_byte(pdev, PCI_REVISION_ID, (u8 *) & id);
-        return id;
-}
-/**
 *  s2io_init_pci -Initialization of PCI and PCI-X configuration registers .
 *  @sp : private member of the device structure, which is a pointer to the
 *  s2io_nic structure.
@@ -7550,7 +7533,7 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
        s2io_vpd_read(sp);
        DBG_PRINT(ERR_DBG, "Copyright(c) 2002-2007 Neterion Inc.\n");
        DBG_PRINT(ERR_DBG, "%s: Neterion %s (rev %d)\n",dev->name,
-                  sp->product_name, get_xena_rev_id(sp->pdev));
+                  sp->product_name, pdev->revision);
        DBG_PRINT(ERR_DBG, "%s: Driver version %s\n", dev->name,
                  s2io_driver_version);
        DBG_PRINT(ERR_DBG, "%s: MAC ADDR: "
diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h
index 58592780f519..3887fe63a908 100644
--- a/drivers/net/s2io.h
+++ b/drivers/net/s2io.h
@@ -1033,7 +1033,6 @@ static void s2io_set_link(struct work_struct *work);
 static int s2io_set_swapper(struct s2io_nic * sp);
 static void s2io_card_down(struct s2io_nic *nic);
 static int s2io_card_up(struct s2io_nic *nic);
-static int get_xena_rev_id(struct pci_dev *pdev);
 static int wait_for_cmd_complete(void __iomem *addr, u64 busy_bit,
                                        int bit_state);
 static int s2io_add_isr(struct s2io_nic * sp);
diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c
index e1f912d04043..c9f7b7aa5556 100644
--- a/drivers/net/sundance.c
+++ b/drivers/net/sundance.c
@@ -397,7 +397,6 @@ struct netdev_private {
        unsigned char phys[MII_CNT];            /* MII device addresses, only first one used. */
        struct pci_dev *pci_dev;
        void __iomem *base;
-        unsigned char pci_rev_id;
 };
 /* The station address location in the EEPROM. */
@@ -544,8 +543,6 @@ static int __devinit sundance_probe1 (struct pci_dev *pdev,
        dev->change_mtu = &change_mtu;
        pci_set_drvdata(pdev, dev);
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &np->pci_rev_id);
        i = register_netdev(dev);
        if (i)
                goto err_out_unmap_rx;
@@ -828,7 +825,7 @@ static int netdev_open(struct net_device *dev)
        iowrite8(100, ioaddr + RxDMAPollPeriod);
        iowrite8(127, ioaddr + TxDMAPollPeriod);
        /* Fix DFE-580TX packet drop issue */
-        if (np->pci_rev_id >= 0x14)
+        if (np->pci_dev->revision >= 0x14)
                iowrite8(0x01, ioaddr + DebugCtrl1);
        netif_start_queue(dev);
@@ -1194,7 +1191,7 @@ static irqreturn_t intr_handler(int irq, void *dev_instance)
                        hw_frame_id = ioread8(ioaddr + TxFrameId);
                }
-                if (np->pci_rev_id >= 0x14) {
+                if (np->pci_dev->revision >= 0x14) {
                        spin_lock(&np->lock);
                        for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) {
                                int entry = np->dirty_tx % TX_RING_SIZE;
diff --git a/drivers/net/sunhme.c b/drivers/net/sunhme.c
index 15146a119230..8b35f13318ea 100644
--- a/drivers/net/sunhme.c
+++ b/drivers/net/sunhme.c
@@ -3095,12 +3095,8 @@ static int __devinit happy_meal_pci_probe(struct pci_dev *pdev,
 #ifdef CONFIG_SPARC
        hp->hm_revision = of_getintprop_default(dp, "hm-rev", 0xff);
-        if (hp->hm_revision == 0xff) {
+        if (hp->hm_revision == 0xff)
-                unsigned char prev;
+                hp->hm_revision = 0xc0 | (pdev->revision & 0x0f);
-                pci_read_config_byte(pdev, PCI_REVISION_ID, &prev);
-                hp->hm_revision = 0xc0 | (prev & 0x0f);
-        }
 #else
        /* works with this on non-sparc hosts */
        hp->hm_revision = 0x20;
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 2f3184184ad9..b148d57ec571 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -10498,11 +10498,7 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
                                continue;
                        }
                        if (pci_id->rev != PCI_ANY_ID) {
-                                u8 rev;
+                                if (bridge->revision > pci_id->rev)
-                                pci_read_config_byte(bridge, PCI_REVISION_ID,
-                                                     &rev);
-                                if (rev > pci_id->rev)
                                        continue;
                        }
                        if (bridge->subordinate &&
diff --git a/drivers/net/tlan.c b/drivers/net/tlan.c
index 106dc1ef0acb..74eb12107e68 100644
--- a/drivers/net/tlan.c
+++ b/drivers/net/tlan.c
@@ -533,7 +533,6 @@ static int __devinit TLan_probe1(struct pci_dev *pdev,
        struct net_device  *dev;
        TLanPrivateInfo    *priv;
-        u8                 pci_rev;
        u16                device_id;
        int                reg, rc = -ENODEV;
@@ -577,8 +576,6 @@ static int __devinit TLan_probe1(struct pci_dev *pdev,
                        goto err_out_free_dev;
                }
-                pci_read_config_byte ( pdev, PCI_REVISION_ID, &pci_rev);
                for ( reg= 0; reg <= 5; reg ++ ) {
                        if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
                                pci_io_base = pci_resource_start(pdev, reg);
@@ -595,7 +592,7 @@ static int __devinit TLan_probe1(struct pci_dev *pdev,
                dev->base_addr = pci_io_base;
                dev->irq = pdev->irq;
-                priv->adapterRev = pci_rev;
+                priv->adapterRev = pdev->revision;
                pci_set_master(pdev);
                pci_set_drvdata(pdev, dev);
diff --git a/drivers/net/tulip/de4x5.c b/drivers/net/tulip/de4x5.c
index 42fca26afc50..09902891a6e6 100644
--- a/drivers/net/tulip/de4x5.c
+++ b/drivers/net/tulip/de4x5.c
@@ -2134,7 +2134,7 @@ srom_search(struct net_device *dev, struct pci_dev *pdev)
    u_short vendor, status;
    u_int irq = 0, device;
    u_long iobase = 0;                     /* Clear upper 32 bits in Alphas */
-    int i, j, cfrv;
+    int i, j;
    struct de4x5_private *lp = netdev_priv(dev);
    struct list_head *walk;
@@ -2150,7 +2150,6 @@ srom_search(struct net_device *dev, struct pci_dev *pdev)
        /* Get the chip configuration revision register */
        pb = this_dev->bus->number;
-        pci_read_config_dword(this_dev, PCI_REVISION_ID, &cfrv);
        /* Set the device number information */
        lp->device = PCI_SLOT(this_dev->devfn);
@@ -2158,7 +2157,8 @@ srom_search(struct net_device *dev, struct pci_dev *pdev)
        /* Set the chipset information */
        if (is_DC2114x) {
-            device = ((cfrv & CFRV_RN) < DC2114x_BRK ? DC21142 : DC21143);
+            device = ((this_dev->revision & CFRV_RN) < DC2114x_BRK
+                      ? DC21142 : DC21143);
        }
        lp->chipset = device;
@@ -2254,7 +2254,7 @@ static int __devinit de4x5_pci_probe (struct pci_dev *pdev,
        }
        /* Get the chip configuration revision register */
-        pci_read_config_dword(pdev, PCI_REVISION_ID, &lp->cfrv);
+        lp->cfrv = pdev->revision;
        /* Set the device number information */
        lp->device = dev_num;
diff --git a/drivers/net/tulip/dmfe.c b/drivers/net/tulip/dmfe.c
index 4ed67ff0e81e..dab74feb44bc 100644
--- a/drivers/net/tulip/dmfe.c
+++ b/drivers/net/tulip/dmfe.c
@@ -181,11 +181,12 @@
        udelay(5);
 #define __CHK_IO_SIZE(pci_id, dev_rev) \
- (( ((pci_id)==PCI_DM9132_ID) || ((dev_rev) >= 0x02000030) ) ? \
+ (( ((pci_id)==PCI_DM9132_ID) || ((dev_rev) >= 0x30) ) ? \
        DM9102A_IO_SIZE: DM9102_IO_SIZE)
-#define CHK_IO_SIZE(pci_dev, dev_rev) \
+#define CHK_IO_SIZE(pci_dev) \
-        (__CHK_IO_SIZE(((pci_dev)->device << 16) | (pci_dev)->vendor, dev_rev))
+        (__CHK_IO_SIZE(((pci_dev)->device << 16) | (pci_dev)->vendor, \
+        (pci_dev)->revision))
 /* Sten Check */
 #define DEVICE net_device
@@ -205,7 +206,7 @@ struct rx_desc {
 struct dmfe_board_info {
        u32 chip_id;                    /* Chip vendor/Device ID */
-        u32 chip_revision;              /* Chip revision */
+        u8 chip_revision;               /* Chip revision */
        struct DEVICE *next_dev;        /* next device */
        struct pci_dev *pdev;           /* PCI device */
        spinlock_t lock;
@@ -359,7 +360,7 @@ static int __devinit dmfe_init_one (struct pci_dev *pdev,
 {
        struct dmfe_board_info *db;     /* board information structure */
        struct net_device *dev;
-        u32 dev_rev, pci_pmr;
+        u32 pci_pmr;
        int i, err;
        DMFE_DBUG(0, "dmfe_init_one()", 0);
@@ -392,10 +393,7 @@ static int __devinit dmfe_init_one (struct pci_dev *pdev,
                goto err_out_disable;
        }
-        /* Read Chip revision */
+        if (pci_resource_len(pdev, 0) < (CHK_IO_SIZE(pdev)) ) {
-        pci_read_config_dword(pdev, PCI_REVISION_ID, &dev_rev);
-        if (pci_resource_len(pdev, 0) < (CHK_IO_SIZE(pdev, dev_rev)) ) {
                printk(KERN_ERR DRV_NAME ": Allocated I/O size too small\n");
                err = -ENODEV;
                goto err_out_disable;
@@ -433,7 +431,7 @@ static int __devinit dmfe_init_one (struct pci_dev *pdev,
        db->chip_id = ent->driver_data;
        db->ioaddr = pci_resource_start(pdev, 0);
-        db->chip_revision = dev_rev;
+        db->chip_revision = pdev->revision;
        db->wol_mode = 0;
        db->pdev = pdev;
@@ -455,7 +453,7 @@ static int __devinit dmfe_init_one (struct pci_dev *pdev,
        pci_read_config_dword(pdev, 0x50, &pci_pmr);
        pci_pmr &= 0x70000;
-        if ( (pci_pmr == 0x10000) && (dev_rev == 0x02000031) )
+        if ( (pci_pmr == 0x10000) && (db->chip_revision == 0x31) )
                db->chip_type = 1;      /* DM9102A E3 */
        else
                db->chip_type = 0;
@@ -553,7 +551,7 @@ static int dmfe_open(struct DEVICE *dev)
        /* CR6 operation mode decision */
        if ( !chkmode || (db->chip_id == PCI_DM9132_ID) ||
-                (db->chip_revision >= 0x02000030) ) {
+                (db->chip_revision >= 0x30) ) {
                db->cr6_data |= DMFE_TXTH_256;
                db->cr0_data = CR0_DEFAULT;
                db->dm910x_chk_mode=4;          /* Enter the normal mode */
@@ -1199,9 +1197,9 @@ static void dmfe_timer(unsigned long data)
                tmp_cr12 = inb(db->ioaddr + DCR12);     /* DM9102/DM9102A */
        if ( ((db->chip_id == PCI_DM9102_ID) &&
-                (db->chip_revision == 0x02000030)) ||
+                (db->chip_revision == 0x30)) ||
                ((db->chip_id == PCI_DM9132_ID) &&
-                (db->chip_revision == 0x02000010)) ) {
+                (db->chip_revision == 0x10)) ) {
                /* DM9102A Chip */
                if (tmp_cr12 & 2)
                        link_ok = 0;
diff --git a/drivers/net/tulip/tulip_core.c b/drivers/net/tulip/tulip_core.c
index 041af63f2811..1a9e911b86a2 100644
--- a/drivers/net/tulip/tulip_core.c
+++ b/drivers/net/tulip/tulip_core.c
@@ -1238,7 +1238,6 @@ static int __devinit tulip_init_one (struct pci_dev *pdev,
        };
        static int last_irq;
        static int multiport_cnt;       /* For four-port boards w/one EEPROM */
-        u8 chip_rev;
        int i, irq;
        unsigned short sum;
        unsigned char *ee_data;
@@ -1274,10 +1273,8 @@ static int __devinit tulip_init_one (struct pci_dev *pdev,
        if (pdev->vendor == 0x1282 && pdev->device == 0x9100)
        {
-                u32 dev_rev;
                /* Read Chip revision */
-                pci_read_config_dword(pdev, PCI_REVISION_ID, &dev_rev);
+                if (pdev->revision < 0x02000030)
-                if(dev_rev < 0x02000030)
                {
                        printk(KERN_ERR PFX "skipping early DM9100 with Crc bug (use dmfe)\n");
                        return -ENODEV;
@@ -1360,8 +1357,6 @@ static int __devinit tulip_init_one (struct pci_dev *pdev,
        if (!ioaddr)
                goto err_out_free_res;
-        pci_read_config_byte (pdev, PCI_REVISION_ID, &chip_rev);
        /*
         * initialize private data structure 'tp'
         * it is zeroed and aligned in alloc_etherdev
@@ -1382,7 +1377,7 @@ static int __devinit tulip_init_one (struct pci_dev *pdev,
        tp->flags = tulip_tbl[chip_idx].flags;
        tp->pdev = pdev;
        tp->base_addr = ioaddr;
-        tp->revision = chip_rev;
+        tp->revision = pdev->revision;
        tp->csr0 = csr0;
        spin_lock_init(&tp->lock);
        spin_lock_init(&tp->mii_lock);
@@ -1399,7 +1394,7 @@ static int __devinit tulip_init_one (struct pci_dev *pdev,
                tulip_mwi_config (pdev, dev);
 #else
        /* MWI is broken for DC21143 rev 65... */
-        if (chip_idx == DC21143 && chip_rev == 65)
+        if (chip_idx == DC21143 && pdev->revision == 65)
                tp->csr0 &= ~MWI;
 #endif
@@ -1640,7 +1635,7 @@ static int __devinit tulip_init_one (struct pci_dev *pdev,
 #else
                "Port"
 #endif
-                " %#llx,", dev->name, chip_name, chip_rev,
+                " %#llx,", dev->name, chip_name, pdev->revision,
                (unsigned long long) pci_resource_start(pdev, TULIP_BAR));
        pci_set_drvdata(pdev, dev);
diff --git a/drivers/net/tulip/xircom_cb.c b/drivers/net/tulip/xircom_cb.c
index 2470b1ee33c0..79943cdd6337 100644
--- a/drivers/net/tulip/xircom_cb.c
+++ b/drivers/net/tulip/xircom_cb.c
@@ -205,7 +205,6 @@ static int __devinit xircom_probe(struct pci_dev *pdev, const struct pci_device_
 {
        struct net_device *dev = NULL;
        struct xircom_private *private;
-        unsigned char chip_rev;
        unsigned long flags;
        unsigned short tmp16;
        enter("xircom_probe");
@@ -224,8 +223,6 @@ static int __devinit xircom_probe(struct pci_dev *pdev, const struct pci_device_
        pci_read_config_word (pdev,PCI_STATUS, &tmp16);
        pci_write_config_word (pdev, PCI_STATUS,tmp16);
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &chip_rev);
        if (!request_region(pci_resource_start(pdev, 0), 128, "xircom_cb")) {
                printk(KERN_ERR "xircom_probe: failed to allocate io-region\n");
                return -ENODEV;
@@ -286,7 +283,7 @@ static int __devinit xircom_probe(struct pci_dev *pdev, const struct pci_device_
                goto reg_fail;
        }
-        printk(KERN_INFO "%s: Xircom cardbus revision %i at irq %i \n", dev->name, chip_rev, pdev->irq);
+        printk(KERN_INFO "%s: Xircom cardbus revision %i at irq %i \n", dev->name, pdev->revision, pdev->irq);
        /* start the transmitter to get a heartbeat */
        /* TODO: send 2 dummy packets here */
        transceiver_voodoo(private);
diff --git a/drivers/net/tulip/xircom_tulip_cb.c b/drivers/net/tulip/xircom_tulip_cb.c
index f64172927377..83d69f11892f 100644
--- a/drivers/net/tulip/xircom_tulip_cb.c
+++ b/drivers/net/tulip/xircom_tulip_cb.c
@@ -524,7 +524,6 @@ static int __devinit xircom_init_one(struct pci_dev *pdev, const struct pci_devi
        int chip_idx = id->driver_data;
        long ioaddr;
        int i;
-        u8 chip_rev;
 /* when built into the kernel, we only print version if device is found */
 #ifndef MODULE
@@ -620,9 +619,8 @@ static int __devinit xircom_init_one(struct pci_dev *pdev, const struct pci_devi
        if (register_netdev(dev))
                goto err_out_cleardev;
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &chip_rev);
        printk(KERN_INFO "%s: %s rev %d at %#3lx,",
-               dev->name, xircom_tbl[chip_idx].chip_name, chip_rev, ioaddr);
+               dev->name, xircom_tbl[chip_idx].chip_name, pdev->revision, ioaddr);
        for (i = 0; i < 6; i++)
                printk("%c%2.2X", i ? ':' : ' ', dev->dev_addr[i]);
        printk(", IRQ %d.\n", dev->irq);
diff --git a/drivers/net/via-rhine.c b/drivers/net/via-rhine.c
index adea290a9d5e..73e9c3dcddde 100644
--- a/drivers/net/via-rhine.c
+++ b/drivers/net/via-rhine.c
@@ -622,7 +622,6 @@ static int __devinit rhine_init_one(struct pci_dev *pdev,
        struct net_device *dev;
        struct rhine_private *rp;
        int i, rc;
-        u8 pci_rev;
        u32 quirks;
        long pioaddr;
        long memaddr;
@@ -642,27 +641,25 @@ static int __devinit rhine_init_one(struct pci_dev *pdev,
                printk(version);
 #endif
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev);
        io_size = 256;
        phy_id = 0;
        quirks = 0;
        name = "Rhine";
-        if (pci_rev < VTunknown0) {
+        if (pdev->revision < VTunknown0) {
                quirks = rqRhineI;
                io_size = 128;
        }
-        else if (pci_rev >= VT6102) {
+        else if (pdev->revision >= VT6102) {
                quirks = rqWOL | rqForceReset;
-                if (pci_rev < VT6105) {
+                if (pdev->revision < VT6105) {
                        name = "Rhine II";
                        quirks |= rqStatusWBRace;       /* Rhine-II exclusive */
                }
                else {
                        phy_id = 1;     /* Integrated PHY, phy_id fixed to 1 */
-                        if (pci_rev >= VT6105_B0)
+                        if (pdev->revision >= VT6105_B0)
                                quirks |= rq6patterns;
-                        if (pci_rev < VT6105M)
+                        if (pdev->revision < VT6105M)
                                name = "Rhine III";
                        else
                                name = "Rhine III (Management Adapter)";
diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c
index b670b97bcfde..f331843d1102 100644
--- a/drivers/net/via-velocity.c
+++ b/drivers/net/via-velocity.c
@@ -890,8 +890,7 @@ static void __devinit velocity_init_info(struct pci_dev *pdev,
 static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev)
 {
-        if (pci_read_config_byte(pdev, PCI_REVISION_ID, &vptr->rev_id) < 0)
+        vptr->rev_id = pdev->revision;
-                return -EIO;
        pci_set_master(pdev);
diff --git a/drivers/net/wan/pc300_drv.c b/drivers/net/wan/pc300_drv.c
index 999bf71937ca..ec1c556a47ca 100644
--- a/drivers/net/wan/pc300_drv.c
+++ b/drivers/net/wan/pc300_drv.c
@@ -3439,7 +3439,6 @@ static int __devinit
 cpc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
        static int first_time = 1;
-        ucchar cpc_rev_id;
        int err, eeprom_outdated = 0;
        ucshort device_id;
        pc300_t *card;
@@ -3480,7 +3479,6 @@ cpc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
        card->hw.falcsize = pci_resource_len(pdev, 4);
        card->hw.plxphys = pci_resource_start(pdev, 5);
        card->hw.plxsize = pci_resource_len(pdev, 5);
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &cpc_rev_id);
        switch (device_id) {
                case PCI_DEVICE_ID_PC300_RX_1:
@@ -3498,7 +3496,7 @@ cpc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
        }
 #ifdef PC300_DEBUG_PCI
        printk("cpc (bus=0x0%x,pci_id=0x%x,", pdev->bus->number, pdev->devfn);
-        printk("rev_id=%d) IRQ%d\n", cpc_rev_id, card->hw.irq);
+        printk("rev_id=%d) IRQ%d\n", pdev->revision, card->hw.irq);
        printk("cpc:found  ramaddr=0x%08lx plxaddr=0x%08lx "
               "ctladdr=0x%08lx falcaddr=0x%08lx\n",
               card->hw.ramphys, card->hw.plxphys, card->hw.scaphys,
diff --git a/drivers/net/wan/pc300too.c b/drivers/net/wan/pc300too.c
index aff05dba720a..dfbd3b00f03b 100644
--- a/drivers/net/wan/pc300too.c
+++ b/drivers/net/wan/pc300too.c
@@ -311,7 +311,6 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev,
                                        const struct pci_device_id *ent)
 {
        card_t *card;
-        u8 rev_id;
        u32 __iomem *p;
        int i;
        u32 ramsize;
@@ -366,7 +365,6 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev,
                        return -ENOMEM;
                }
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
        if (pci_resource_len(pdev, 0) != PC300_PLX_SIZE ||
            pci_resource_len(pdev, 2) != PC300_SCA_SIZE ||
            pci_resource_len(pdev, 3) < 16384) {
diff --git a/drivers/net/wan/pci200syn.c b/drivers/net/wan/pci200syn.c
index ca06a00d9d86..7f720de2e9f0 100644
--- a/drivers/net/wan/pci200syn.c
+++ b/drivers/net/wan/pci200syn.c
@@ -289,7 +289,6 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev,
                                         const struct pci_device_id *ent)
 {
        card_t *card;
-        u8 rev_id;
        u32 __iomem *p;
        int i;
        u32 ramsize;
@@ -330,7 +329,6 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev,
                return -ENOMEM;
        }
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
        if (pci_resource_len(pdev, 0) != PCI200SYN_PLX_SIZE ||
            pci_resource_len(pdev, 2) != PCI200SYN_SCA_SIZE ||
            pci_resource_len(pdev, 3) < 16384) {
diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_main.c b/drivers/net/wireless/bcm43xx/bcm43xx_main.c
index ef6b253a92ce..c5d6753a55ea 100644
--- a/drivers/net/wireless/bcm43xx/bcm43xx_main.c
+++ b/drivers/net/wireless/bcm43xx/bcm43xx_main.c
@@ -3741,10 +3741,8 @@ static int bcm43xx_attach_board(struct bcm43xx_private *bcm)
                                  &bcm->board_type);
        if (err)
                goto err_iounmap;
-        err = bcm43xx_pci_read_config16(bcm, PCI_REVISION_ID,
-                                  &bcm->board_revision);
+        bcm->board_revision = bcm->pci_dev->revision;
-        if (err)
-                goto err_iounmap;
        err = bcm43xx_chipset_attach(bcm);
        if (err)
diff --git a/drivers/pci/hotplug/cpqphp_core.c b/drivers/pci/hotplug/cpqphp_core.c
index 5617cfdadc5c..d590a99930fa 100644
--- a/drivers/pci/hotplug/cpqphp_core.c
+++ b/drivers/pci/hotplug/cpqphp_core.c
@@ -796,7 +796,6 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
        u8 num_of_slots = 0;
        u8 hp_slot = 0;
        u8 device;
-        u8 rev;
        u8 bus_cap;
        u16 temp_word;
        u16 vendor_id;
@@ -823,9 +822,8 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
        }
        dbg("Vendor ID: %x\n", vendor_id);
-        rc = pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
+        dbg("revision: %d\n", pdev->revision);
-        dbg("revision: %d\n", rev);
+        if ((vendor_id == PCI_VENDOR_ID_COMPAQ) && (!pdev->revision)) {
-        if (rc || ((vendor_id == PCI_VENDOR_ID_COMPAQ) && (!rev))) {
                err(msg_HPC_rev_error);
                rc = -ENODEV;
                goto err_disable_device;
@@ -836,7 +834,7 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         * For Intel, each SSID bit identifies a PHP capability.
         * Also Intel HPC's may have RID=0.
         */
-        if ((rev > 2) || (vendor_id == PCI_VENDOR_ID_INTEL)) {
+        if ((pdev->revision > 2) || (vendor_id == PCI_VENDOR_ID_INTEL)) {
                // TODO: This code can be made to support non-Compaq or Intel subsystem IDs
                rc = pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vid);
                if (rc) {
@@ -870,7 +868,7 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
                switch (subsystem_vid) {
                        case PCI_VENDOR_ID_COMPAQ:
-                                if (rev >= 0x13) { /* CIOBX */
+                                if (pdev->revision >= 0x13) { /* CIOBX */
                                        ctrl->push_flag = 1;
                                        ctrl->slot_switch_type = 1;
                                        ctrl->push_button = 1;
@@ -1075,7 +1073,7 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
        memcpy(ctrl->pci_bus, pdev->bus, sizeof(*ctrl->pci_bus));
        ctrl->bus = pdev->bus->number;
-        ctrl->rev = rev;
+        ctrl->rev = pdev->revision;
        dbg("bus device function rev: %d %d %d %d\n", ctrl->bus,
                PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), ctrl->rev);
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 75bd6a8648f6..f75ade6f0602 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -587,10 +587,7 @@ DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8237,		quirk_via_v
 */
 static void __devinit quirk_amd_ioapic(struct pci_dev *dev)
 {
-        u8 rev;
+        if (dev->revision >= 0x02) {
-        pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
-        if (rev >= 0x02) {
                printk(KERN_WARNING "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
                printk(KERN_WARNING "        : booting with the \"noapic\" option.\n");
        }
@@ -610,13 +607,12 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI,	PCI_ANY_ID,			quirk_ioapic_rmw );
 #define AMD8131_NIOAMODE_BIT 0
 static void quirk_amd_8131_ioapic(struct pci_dev *dev)
 { 
-        unsigned char revid, tmp;
+        unsigned char tmp;
        
        if (nr_ioapics == 0) 
                return;
-        pci_read_config_byte(dev, PCI_REVISION_ID, &revid);
+        if (dev->revision == AMD8131_revA0 || dev->revision == AMD8131_revB0) {
-        if (revid == AMD8131_revA0 || revid == AMD8131_revB0) {
                printk(KERN_INFO "Fixing up AMD8131 IOAPIC mode\n"); 
                pci_read_config_byte( dev, AMD8131_MISC, &tmp);
                tmp &= ~(1 << AMD8131_NIOAMODE_BIT);
@@ -859,10 +855,8 @@ DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX,	PCI_DEVICE_ID_CYRIX_PCI_MASTER, qu
 static void quirk_disable_pxb(struct pci_dev *pdev)
 {
        u16 config;
-        u8 rev;
        
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
+        if (pdev->revision != 0x04)             /* Only C0 requires this */
-        if (rev != 0x04)                /* Only C0 requires this */
                return;
        pci_read_config_word(pdev, 0x40, &config);
        if (config & (1<<6)) {
diff --git a/drivers/scsi/aic94xx/aic94xx_init.c b/drivers/scsi/aic94xx/aic94xx_init.c
index 27852b43b904..1c0d7578e791 100644
--- a/drivers/scsi/aic94xx/aic94xx_init.c
+++ b/drivers/scsi/aic94xx/aic94xx_init.c
@@ -223,13 +223,8 @@ static int __devinit asd_common_setup(struct asd_ha_struct *asd_ha)
 {
        int err, i;
-        err = pci_read_config_byte(asd_ha->pcidev, PCI_REVISION_ID,
+        asd_ha->revision_id = asd_ha->pcidev->revision;
-                                   &asd_ha->revision_id);
-        if (err) {
-                asd_printk("couldn't read REVISION ID register of %s\n",
-                           pci_name(asd_ha->pcidev));
-                goto Err;
-        }
        err = -ENODEV;
        if (asd_ha->revision_id < AIC9410_DEV_REV_B0) {
                asd_printk("%s is revision %s (%X), which is not supported\n",
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index fa6ff295e568..81330712048c 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -5367,18 +5367,12 @@ static const u16 ipr_blocked_processors[] = {
 **/
 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
 {
-        u8 rev_id;
        int i;
-        if (ioa_cfg->type == 0x5702) {
+        if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
-                if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
+                for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
-                                         &rev_id) == PCIBIOS_SUCCESSFUL) {
+                        if (__is_processor(ipr_blocked_processors[i]))
-                        if (rev_id < 4) {
+                                return 1;
-                                for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
-                                        if (__is_processor(ipr_blocked_processors[i]))
-                                                return 1;
-                                }
-                        }
                }
        }
        return 0;
@@ -7535,13 +7529,7 @@ static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
        else
                ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
-        rc = pci_read_config_byte(pdev, PCI_REVISION_ID, &ioa_cfg->revid);
+        ioa_cfg->revid = pdev->revision;
-        if (rc != PCIBIOS_SUCCESSFUL) {
-                dev_err(&pdev->dev, "Failed to read PCI revision ID\n");
-                rc = -EIO;
-                goto out_scsi_host_put;
-        }
        ipr_regs_pci = pci_resource_start(pdev, 0);
diff --git a/drivers/scsi/ips.c b/drivers/scsi/ips.c
index 8b704f73055a..40f148e0833f 100644
--- a/drivers/scsi/ips.c
+++ b/drivers/scsi/ips.c
@@ -7148,7 +7148,6 @@ ips_init_phase1(struct pci_dev *pci_dev, int *indexPtr)
        uint32_t mem_addr;
        uint32_t io_len;
        uint32_t mem_len;
-        uint8_t revision_id;
        uint8_t bus;
        uint8_t func;
        uint8_t irq;
@@ -7227,12 +7226,6 @@ ips_init_phase1(struct pci_dev *pci_dev, int *indexPtr)
                }
        }
-        /* get the revision ID */
-        if (pci_read_config_byte(pci_dev, PCI_REVISION_ID, &revision_id)) {
-                IPS_PRINTK(KERN_WARNING, pci_dev, "Can't get revision id.\n");
-                return -1;
-        }
        subdevice_id = pci_dev->subsystem_device;
        /* found a controller */
@@ -7258,7 +7251,7 @@ ips_init_phase1(struct pci_dev *pci_dev, int *indexPtr)
        ha->mem_ptr = mem_ptr;
        ha->ioremap_ptr = ioremap_ptr;
        ha->host_num = (uint32_t) index;
-        ha->revision_id = revision_id;
+        ha->revision_id = pci_dev->revision;
        ha->slot_num = PCI_SLOT(pci_dev->devfn);
        ha->device_id = pci_dev->device;
        ha->subdevice_id = subdevice_id;
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 2a45aec4ff29..cf94f8636ba5 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -296,7 +296,7 @@ qla24xx_pci_config(scsi_qla_host_t *ha)
        d &= ~PCI_ROM_ADDRESS_ENABLE;
        pci_write_config_dword(ha->pdev, PCI_ROM_ADDRESS, d);
-        pci_read_config_word(ha->pdev, PCI_REVISION_ID, &ha->chip_revision);
+        ha->chip_revision = ha->pdev->revision;
        /* Get PCI bus information. */
        spin_lock_irqsave(&ha->hardware_lock, flags);
diff --git a/drivers/serial/jsm/jsm_driver.c b/drivers/serial/jsm/jsm_driver.c
index 81792e6eeb2d..6767ee381cd1 100644
--- a/drivers/serial/jsm/jsm_driver.c
+++ b/drivers/serial/jsm/jsm_driver.c
@@ -88,7 +88,7 @@ static int jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
        spin_lock_init(&brd->bd_intr_lock);
        /* store which revision we have */
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev);
+        brd->rev = pdev->revision;
        brd->irq = pdev->irq;
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 12edc723ec73..966965f72338 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -149,8 +149,7 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
                 * fixed in newer silicon.
                 */
                case 0x0068:
-                        pci_read_config_dword(pdev, PCI_REVISION_ID, &temp);
+                        if (pdev->revision < 0xa4)
-                        if ((temp & 0xff) < 0xa4)
                                ehci->no_selective_suspend = 1;
                        break;
                }
diff --git a/drivers/video/kyro/STG4000InitDevice.c b/drivers/video/kyro/STG4000InitDevice.c
index ab5285a7f1d6..1d3f2080aa6f 100644
--- a/drivers/video/kyro/STG4000InitDevice.c
+++ b/drivers/video/kyro/STG4000InitDevice.c
@@ -247,7 +247,6 @@ int SetCoreClockPLL(volatile STG4000REG __iomem *pSTGReg, struct pci_dev *pDev)
        u32 ulCoreClock;
        u32 tmp;
        u32 ulChipSpeed;
-        u8 rev;
        STG_WRITE_REG(IntMask, 0xFFFF);
@@ -276,9 +275,9 @@ int SetCoreClockPLL(volatile STG4000REG __iomem *pSTGReg, struct pci_dev *pDev)
                      PMX2_SOFTRESET_ROM_RST);
        pci_read_config_word(pDev, PCI_CONFIG_SUBSYS_ID, &sub);
-        pci_read_config_byte(pDev, PCI_REVISION_ID, &rev);
-        ulChipSpeed = InitSDRAMRegisters(pSTGReg, (u32)sub, (u32)rev);
+        ulChipSpeed = InitSDRAMRegisters(pSTGReg, (u32)sub,
+                                         (u32)pDev->revision);
        if (ulChipSpeed == 0)
                return -EINVAL;
diff --git a/drivers/video/matrox/matroxfb_base.c b/drivers/video/matrox/matroxfb_base.c
index c8559a756b75..886e475f22f2 100644
--- a/drivers/video/matrox/matroxfb_base.c
+++ b/drivers/video/matrox/matroxfb_base.c
@@ -1994,7 +1994,6 @@ static void matroxfb_unregister_device(struct matrox_fb_info* minfo) {
 static int matroxfb_probe(struct pci_dev* pdev, const struct pci_device_id* dummy) {
        struct board* b;
-        u_int8_t rev;
        u_int16_t svid;
        u_int16_t sid;
        struct matrox_fb_info* minfo;
@@ -2005,11 +2004,10 @@ static int matroxfb_probe(struct pci_dev* pdev, const struct pci_device_id* dumm
 #endif
        DBG(__FUNCTION__)
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
        svid = pdev->subsystem_vendor;
        sid = pdev->subsystem_device;
        for (b = dev_list; b->vendor; b++) {
-                if ((b->vendor != pdev->vendor) || (b->device != pdev->device) || (b->rev < rev)) continue;
+                if ((b->vendor != pdev->vendor) || (b->device != pdev->device) || (b->rev < pdev->revision)) continue;
                if (b->svid)
                        if ((b->svid != svid) || (b->sid != sid)) continue;
                break;
diff --git a/drivers/video/sis/sis_main.c b/drivers/video/sis/sis_main.c
index a30e1e13d8be..93d07ef85276 100644
--- a/drivers/video/sis/sis_main.c
+++ b/drivers/video/sis/sis_main.c
@@ -5789,7 +5789,7 @@ sisfb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
        ivideo->warncount = 0;
        ivideo->chip_id = pdev->device;
        ivideo->chip_vendor = pdev->vendor;
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &ivideo->revision_id);
+        ivideo->revision_id = pdev->revision;
        ivideo->SiS_Pr.ChipRevision = ivideo->revision_id;
        pci_read_config_word(pdev, PCI_COMMAND, &reg16);
        ivideo->sisvga_enabled = reg16 & 0x01;
diff --git a/drivers/video/sstfb.c b/drivers/video/sstfb.c
index 62fa5500361d..5eff28ce4f4d 100644
--- a/drivers/video/sstfb.c
+++ b/drivers/video/sstfb.c
@@ -1348,7 +1348,7 @@ static int __devinit sstfb_probe(struct pci_dev *pdev,
        f_ddprintk("found device : %s\n", spec->name);
        par->dev = pdev;
-        pci_read_config_byte(pdev, PCI_REVISION_ID, &par->revision);
+        par->revision = pdev->revision;
        fix->mmio_start = pci_resource_start(pdev,0);
        fix->mmio_len   = 0x400000;
diff --git a/drivers/video/tgafb.c b/drivers/video/tgafb.c
index f0fde6ea7c36..5c0dab628099 100644
--- a/drivers/video/tgafb.c
+++ b/drivers/video/tgafb.c
@@ -1625,8 +1625,7 @@ tgafb_register(struct device *dev)
        par->tga_regs_base = mem_base + TGA_REGS_OFFSET;
        par->tga_type = tga_type;
        if (tga_bus_pci)
-                pci_read_config_byte(to_pci_dev(dev), PCI_REVISION_ID,
+                par->tga_chip_rev = (to_pci_dev(dev))->revision;
-                                     &par->tga_chip_rev);
        if (tga_bus_tc)
                par->tga_chip_rev = TGA_READ_REG(par, TGA_START_REG) & 0xff;
diff --git a/sound/oss/emu10k1/main.c b/sound/oss/emu10k1/main.c
index 16ac02540a3f..5058411b7524 100644
--- a/sound/oss/emu10k1/main.c
+++ b/sound/oss/emu10k1/main.c
@@ -1302,7 +1302,7 @@ static int __devinit emu10k1_probe(struct pci_dev *pci_dev, const struct pci_dev
                goto err_irq;
        }
-        pci_read_config_byte(pci_dev, PCI_REVISION_ID, &card->chiprev);
+        card->chiprev = pci_dev->revision;
        pci_read_config_word(pci_dev, PCI_SUBSYSTEM_ID, &card->model);
        printk(KERN_INFO "emu10k1: %s rev %d model %#04x found, IO at %#04lx-%#04lx, IRQ %d\n",
diff --git a/sound/oss/es1371.c b/sound/oss/es1371.c
index 593a3aac12ce..52648573f601 100644
--- a/sound/oss/es1371.c
+++ b/sound/oss/es1371.c
@@ -2894,7 +2894,7 @@ static int __devinit es1371_probe(struct pci_dev *pcidev, const struct pci_devic
        s->irq = pcidev->irq;
        s->vendor = pcidev->vendor;
        s->device = pcidev->device;
-        pci_read_config_byte(pcidev, PCI_REVISION_ID, &s->rev);
+        s->rev = pcidev->revision;
        s->codec->private_data = s;
        s->codec->id = 0;
        s->codec->codec_read = rdcodec;
diff --git a/sound/pci/ali5451/ali5451.c b/sound/pci/ali5451/ali5451.c
index cb59f994c68f..41543a4933e7 100644
--- a/sound/pci/ali5451/ali5451.c
+++ b/sound/pci/ali5451/ali5451.c
@@ -2218,7 +2218,7 @@ static int __devinit snd_ali_create(struct snd_card *card,
        codec->card = card;
        codec->pci = pci;
        codec->irq = -1;
-        pci_read_config_byte(pci, PCI_REVISION_ID, &codec->revision);
+        codec->revision = pci->revision;
        codec->spdif_support = spdif_support;
        if (pcm_streams < 1)
diff --git a/sound/pci/atiixp.c b/sound/pci/atiixp.c
index 7d8053b5e8d5..89184a424140 100644
--- a/sound/pci/atiixp.c
+++ b/sound/pci/atiixp.c
@@ -1639,15 +1639,12 @@ static int __devinit snd_atiixp_probe(struct pci_dev *pci,
 {
        struct snd_card *card;
        struct atiixp *chip;
-        unsigned char revision;
        int err;
        card = snd_card_new(index, id, THIS_MODULE, 0);
        if (card == NULL)
                return -ENOMEM;
-        pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
        strcpy(card->driver, spdif_aclink ? "ATIIXP" : "ATIIXP-SPDMA");
        strcpy(card->shortname, "ATI IXP");
        if ((err = snd_atiixp_create(card, pci, &chip)) < 0)
@@ -1670,7 +1667,8 @@ static int __devinit snd_atiixp_probe(struct pci_dev *pci,
        snd_atiixp_chip_start(chip);
        snprintf(card->longname, sizeof(card->longname),
-                 "%s rev %x with %s at %#lx, irq %i", card->shortname, revision,
+                 "%s rev %x with %s at %#lx, irq %i", card->shortname,
+                 pci->revision,
                 chip->ac97[0] ? snd_ac97_get_short_name(chip->ac97[0]) : "?",
                 chip->addr, chip->irq);
diff --git a/sound/pci/atiixp_modem.c b/sound/pci/atiixp_modem.c
index 904023fe4f26..ce752f84457a 100644
--- a/sound/pci/atiixp_modem.c
+++ b/sound/pci/atiixp_modem.c
@@ -1283,15 +1283,12 @@ static int __devinit snd_atiixp_probe(struct pci_dev *pci,
 {
        struct snd_card *card;
        struct atiixp_modem *chip;
-        unsigned char revision;
        int err;
        card = snd_card_new(index, id, THIS_MODULE, 0);
        if (card == NULL)
                return -ENOMEM;
-        pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
        strcpy(card->driver, "ATIIXP-MODEM");
        strcpy(card->shortname, "ATI IXP Modem");
        if ((err = snd_atiixp_create(card, pci, &chip)) < 0)
@@ -1312,7 +1309,7 @@ static int __devinit snd_atiixp_probe(struct pci_dev *pci,
        snd_atiixp_chip_start(chip);
        sprintf(card->longname, "%s rev %x at 0x%lx, irq %i",
-                card->shortname, revision, chip->addr, chip->irq);
+                card->shortname, pci->revision, chip->addr, chip->irq);
        if ((err = snd_card_register(card)) < 0)
                goto __error;
diff --git a/sound/pci/au88x0/au88x0.c b/sound/pci/au88x0/au88x0.c
index 238154bb7a25..5ec1b6fcd548 100644
--- a/sound/pci/au88x0/au88x0.c
+++ b/sound/pci/au88x0/au88x0.c
@@ -341,11 +341,7 @@ snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
                snd_card_free(card);
                return err;
        }
-        if ((err = pci_read_config_byte(pci, PCI_REVISION_ID,
+        chip->rev = pci->revision;
-                                  &(chip->rev))) < 0) {
-                snd_card_free(card);
-                return err;
-        }
 #ifdef CHIP_AU8830
        if ((chip->rev) != 0xfe && (chip->rev) != 0xfa) {
                printk(KERN_ALERT
diff --git a/sound/pci/ca0106/ca0106.h b/sound/pci/ca0106/ca0106.h
index aaac6e5b4767..a0420bc63f0b 100644
--- a/sound/pci/ca0106/ca0106.h
+++ b/sound/pci/ca0106/ca0106.h
@@ -590,7 +590,6 @@ struct snd_ca0106 {
        struct resource *res_port;
        int irq;
-        unsigned char revision;         /* chip revision */
        unsigned int serial;            /* serial number */
        unsigned short model;           /* subsystem id */
diff --git a/sound/pci/ca0106/ca0106_main.c b/sound/pci/ca0106/ca0106_main.c
index 48f3f17c5170..9fd7b8a5b75e 100644
--- a/sound/pci/ca0106/ca0106_main.c
+++ b/sound/pci/ca0106/ca0106_main.c
@@ -1293,13 +1293,12 @@ static int __devinit snd_ca0106_create(int dev, struct snd_card *card,
        }
        pci_set_master(pci);
-        /* read revision & serial */
+        /* read serial */
-        pci_read_config_byte(pci, PCI_REVISION_ID, &chip->revision);
        pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
        pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
 #if 1
        printk(KERN_INFO "snd-ca0106: Model %04x Rev %08x Serial %08x\n", chip->model,
-               chip->revision, chip->serial);
+               pci->revision, chip->serial);
 #endif
        strcpy(card->driver, "CA0106");
        strcpy(card->shortname, "CA0106");
diff --git a/sound/pci/emu10k1/emu10k1_main.c b/sound/pci/emu10k1/emu10k1_main.c
index dbc805c33fc4..4a9b59ad8ab1 100644
--- a/sound/pci/emu10k1/emu10k1_main.c
+++ b/sound/pci/emu10k1/emu10k1_main.c
@@ -1511,7 +1511,6 @@ int __devinit snd_emu10k1_create(struct snd_card *card,
        struct snd_emu10k1 *emu;
        int idx, err;
        int is_audigy;
-        unsigned char revision;
        unsigned int silent_page;
        const struct snd_emu_chip_details *c;
        static struct snd_device_ops ops = {
@@ -1543,8 +1542,7 @@ int __devinit snd_emu10k1_create(struct snd_card *card,
        emu->synth = NULL;
        emu->get_synth_voice = NULL;
        /* read revision & serial */
-        pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
+        emu->revision = pci->revision;
-        emu->revision = revision;
        pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &emu->serial);
        pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &emu->model);
        snd_printdd("vendor=0x%x, device=0x%x, subsystem_vendor_id=0x%x, subsystem_id=0x%x\n",pci->vendor, pci->device, emu->serial, emu->model);
diff --git a/sound/pci/emu10k1/emu10k1x.c b/sound/pci/emu10k1/emu10k1x.c
index bb0fec7f7e1b..e4af7a9b808c 100644
--- a/sound/pci/emu10k1/emu10k1x.c
+++ b/sound/pci/emu10k1/emu10k1x.c
@@ -942,7 +942,7 @@ static int __devinit snd_emu10k1x_create(struct snd_card *card,
        pci_set_master(pci);
        /* read revision & serial */
-        pci_read_config_byte(pci, PCI_REVISION_ID, &chip->revision);
+        chip->revision = pci->revision;
        pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
        pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
        snd_printk(KERN_INFO "Model %04x Rev %08x Serial %08x\n", chip->model,
diff --git a/sound/pci/ens1370.c b/sound/pci/ens1370.c
index 6a0ddcf00884..7c403965153b 100644
--- a/sound/pci/ens1370.c
+++ b/sound/pci/ens1370.c
@@ -2110,7 +2110,6 @@ static int __devinit snd_ensoniq_create(struct snd_card *card,
                                     struct ensoniq ** rensoniq)
 {
        struct ensoniq *ensoniq;
-        unsigned char cmdb;
        int err;
        static struct snd_device_ops ops = {
                .dev_free =     snd_ensoniq_dev_free,
@@ -2151,8 +2150,7 @@ static int __devinit snd_ensoniq_create(struct snd_card *card,
        }
 #endif
        pci_set_master(pci);
-        pci_read_config_byte(pci, PCI_REVISION_ID, &cmdb);
+        ensoniq->rev = pci->revision;
-        ensoniq->rev = cmdb;
 #ifdef CHIP1370
 #if 0
        ensoniq->ctrl = ES_1370_CDC_EN | ES_1370_SERR_DISABLE |
diff --git a/sound/pci/fm801.c b/sound/pci/fm801.c
index 6dc578bbeec9..11015178e207 100644
--- a/sound/pci/fm801.c
+++ b/sound/pci/fm801.c
@@ -1369,7 +1369,6 @@ static int __devinit snd_fm801_create(struct snd_card *card,
                                      struct fm801 ** rchip)
 {
        struct fm801 *chip;
-        unsigned char rev;
        int err;
        static struct snd_device_ops ops = {
                .dev_free =     snd_fm801_dev_free,
@@ -1405,8 +1404,7 @@ static int __devinit snd_fm801_create(struct snd_card *card,
                pci_set_master(pci);
        }
-        pci_read_config_byte(pci, PCI_REVISION_ID, &rev);
+        if (pci->revision >= 0xb1)      /* FM801-AU */
-        if (rev >= 0xb1)        /* FM801-AU */
                chip->multichannel = 1;
        snd_fm801_chip_init(chip, 0);
diff --git a/sound/pci/via82xx.c b/sound/pci/via82xx.c
index a28992269f5e..50c9f92cfd1b 100644
--- a/sound/pci/via82xx.c
+++ b/sound/pci/via82xx.c
@@ -2431,7 +2431,6 @@ static int __devinit snd_via82xx_probe(struct pci_dev *pci,
 {
        struct snd_card *card;
        struct via82xx *chip;
-        unsigned char revision;
        int chip_type = 0, card_type;
        unsigned int i;
        int err;
@@ -2441,18 +2440,17 @@ static int __devinit snd_via82xx_probe(struct pci_dev *pci,
                return -ENOMEM;
        card_type = pci_id->driver_data;
-        pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
        switch (card_type) {
        case TYPE_CARD_VIA686:
                strcpy(card->driver, "VIA686A");
-                sprintf(card->shortname, "VIA 82C686A/B rev%x", revision);
+                sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
                chip_type = TYPE_VIA686;
                break;
        case TYPE_CARD_VIA8233:
                chip_type = TYPE_VIA8233;
-                sprintf(card->shortname, "VIA 823x rev%x", revision);
+                sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
                for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
-                        if (revision == via823x_cards[i].revision) {
+                        if (pci->revision == via823x_cards[i].revision) {
                                chip_type = via823x_cards[i].type;
                                strcpy(card->shortname, via823x_cards[i].name);
                                break;
@@ -2460,7 +2458,7 @@ static int __devinit snd_via82xx_probe(struct pci_dev *pci,
                }
                if (chip_type != TYPE_VIA8233A) {
                        if (dxs_support == VIA_DXS_AUTO)
-                                dxs_support = check_dxs_list(pci, revision);
+                                dxs_support = check_dxs_list(pci, pci->revision);
                        /* force to use VIA8233 or 8233A model according to
                         * dxs_support module option
                         */
@@ -2471,7 +2469,7 @@ static int __devinit snd_via82xx_probe(struct pci_dev *pci,
                }
                if (chip_type == TYPE_VIA8233A)
                        strcpy(card->driver, "VIA8233A");
-                else if (revision >= VIA_REV_8237)
+                else if (pci->revision >= VIA_REV_8237)
                        strcpy(card->driver, "VIA8237"); /* no slog assignment */
                else
                        strcpy(card->driver, "VIA8233");
@@ -2482,7 +2480,7 @@ static int __devinit snd_via82xx_probe(struct pci_dev *pci,
                goto __error;
        }
                
-        if ((err = snd_via82xx_create(card, pci, chip_type, revision,
+        if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
                                      ac97_clock, &chip)) < 0)
                goto __error;
        card->private_data = chip;
diff --git a/sound/pci/via82xx_modem.c b/sound/pci/via82xx_modem.c
index b338e15db0d9..8cbf8eba4ae9 100644
--- a/sound/pci/via82xx_modem.c
+++ b/sound/pci/via82xx_modem.c
@@ -1162,7 +1162,6 @@ static int __devinit snd_via82xx_probe(struct pci_dev *pci,
 {
        struct snd_card *card;
        struct via82xx_modem *chip;
-        unsigned char revision;
        int chip_type = 0, card_type;
        unsigned int i;
        int err;
@@ -1172,7 +1171,6 @@ static int __devinit snd_via82xx_probe(struct pci_dev *pci,
                return -ENOMEM;
        card_type = pci_id->driver_data;
-        pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
        switch (card_type) {
        case TYPE_CARD_VIA82XX_MODEM:
                strcpy(card->driver, "VIA82XX-MODEM");
@@ -1184,7 +1182,7 @@ static int __devinit snd_via82xx_probe(struct pci_dev *pci,
                goto __error;
        }
                
-        if ((err = snd_via82xx_create(card, pci, chip_type, revision,
+        if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
                                      ac97_clock, &chip)) < 0)
                goto __error;
        card->private_data = chip;
diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c
index ea861bceaddf..ab7a81c35705 100644
--- a/sound/pci/ymfpci/ymfpci_main.c
+++ b/sound/pci/ymfpci/ymfpci_main.c
@@ -2404,7 +2404,7 @@ int __devinit snd_ymfpci_create(struct snd_card *card,
        chip->pci = pci;
        chip->irq = -1;
        chip->device_id = pci->device;
-        pci_read_config_byte(pci, PCI_REVISION_ID, &chip->rev);
+        chip->rev = pci->revision;
        chip->reg_area_phys = pci_resource_start(pci, 0);
        chip->reg_area_virt = ioremap_nocache(chip->reg_area_phys, 0x8000);
        pci_set_master(pci);