10 files changed, 32 insertions, 61 deletions

diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 21a7ca4936b4..d9fa329fd157 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_cs5530.c b/drivers/ata/pata_cs5530.c
index 3fca5898642b..68f150a1e2f4 100644
--- a/drivers/ata/pata_cs5530.c
+++ b/drivers/ata/pata_cs5530.c
@@ -266,7 +266,7 @@ static int cs5530_init_chip(void)
         }
 
         pci_set_master(cs5530_0);
-        pci_set_mwi(cs5530_0);
+        pci_try_set_mwi(cs5530_0);
 
         /*
          * Set PCI CacheLineSize to 16-bytes:
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 (conf == 0x10) {
+        if (pdev->revision == 0x11) {
                 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 657b1ee2f5c1..9a829a7cbc60 100644
--- a/drivers/ata/pata_sis.c
+++ b/drivers/ata/pata_sis.c
@@ -931,9 +931,7 @@ 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;
-                                pci_read_config_byte(host, PCI_REVISION_ID, &host_rev);
-                                if (host_rev >= 0x30)   /* 630 ET */
+                                if (host->revision >= 0x30)     /* 630 ET */
                                         chipset = &sis100_early;
                         }
                         break;
@@ -977,7 +975,6 @@ 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);
@@ -990,11 +987,10 @@ 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 (t >= config->rev_min &&
-                            t <= config->rev_max)
+                        if (isa->revision >= config->rev_min &&
+                            isa->revision <= config->rev_max)
                                 break;
                         pci_dev_put(isa);
                 }
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 8a77a0ae83ad..5d576435fccc 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -1765,12 +1765,9 @@ 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) && (rev_id == 0);
+        early_5080 = (pdev->device == 0x5080) && (pdev->revision == 0);
 
         if (!early_5080) {
                 u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
@@ -2387,17 +2384,14 @@ 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_GEN_I;
 
-                switch (rev_id) {
+                switch (pdev->revision) {
                 case 0x1:
                         hp_flags |= MV_HP_ERRATA_50XXB0;
                         break;
@@ -2417,7 +2411,7 @@ static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
                 hpriv->ops = &mv5xxx_ops;
                 hp_flags |= MV_HP_GEN_I;
 
-                switch (rev_id) {
+                switch (pdev->revision) {
                 case 0x0:
                         hp_flags |= MV_HP_ERRATA_50XXB0;
                         break;
@@ -2437,7 +2431,7 @@ static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
                 hpriv->ops = &mv6xxx_ops;
                 hp_flags |= MV_HP_GEN_II;
 
-                switch (rev_id) {
+                switch (pdev->revision) {
                 case 0x7:
                         hp_flags |= MV_HP_ERRATA_60X1B2;
                         break;
@@ -2457,7 +2451,7 @@ static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
                 hpriv->ops = &mv6xxx_ops;
                 hp_flags |= MV_HP_GEN_IIE;
 
-                switch (rev_id) {
+                switch (pdev->revision) {
                 case 0x0:
                         hp_flags |= MV_HP_ERRATA_XX42A0;
                         break;
@@ -2585,14 +2579,12 @@ 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";