29 files changed, 366 insertions, 184 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 87a17337c7f6..71d05f481727 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1189,8 +1189,6 @@ running once the system is up.
                                 Mechanism 2.
                 nommconf        [IA-32,X86_64] Disable use of MMCONFIG for PCI
                                 Configuration
-                mmconf          [IA-32,X86_64] Force MMCONFIG. This is useful
-                                to override the builtin blacklist.
                 nomsi           [MSI] If the PCI_MSI kernel config parameter is
                                 enabled, this kernel boot option can be used to
                                 disable the use of MSI interrupts system-wide.
diff --git a/Makefile b/Makefile
index a086e3212af3..47e21c04014e 100644
--- a/Makefile
+++ b/Makefile
@@ -1082,6 +1082,7 @@ help:
         @echo  'Static analysers'
         @echo  '  checkstack      - Generate a list of stack hogs'
         @echo  '  namespacecheck  - Name space analysis on compiled kernel'
+        @echo  '  headers_check   - Sanity check on exported headers'
         @echo  ''
         @echo  'Kernel packaging:'
         @$(MAKE) $(build)=$(package-dir) help
diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index 345ffb7d904d..f1682206d304 100644
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -956,6 +956,38 @@ efi_memory_present_wrapper(unsigned long start, unsigned long end, void *arg)
         return 0;
 }
 
+ /*
+  * This function checks if the entire range <start,end> is mapped with type.
+  *
+  * Note: this function only works correct if the e820 table is sorted and
+  * not-overlapping, which is the case
+  */
+int __init
+e820_all_mapped(unsigned long s, unsigned long e, unsigned type)
+{
+        u64 start = s;
+        u64 end = e;
+        int i;
+        for (i = 0; i < e820.nr_map; i++) {
+                struct e820entry *ei = &e820.map[i];
+                if (type && ei->type != type)
+                        continue;
+                /* is the region (part) in overlap with the current region ?*/
+                if (ei->addr >= end || ei->addr + ei->size <= start)
+                        continue;
+                /* if the region is at the beginning of <start,end> we move
+                 * start to the end of the region since it's ok until there
+                 */
+                if (ei->addr <= start)
+                        start = ei->addr + ei->size;
+                /* if start is now at or beyond end, we're done, full
+                 * coverage */
+                if (start >= end)
+                        return 1; /* we're done */
+        }
+        return 0;
+}
+
 /*
  * Find the highest page frame number we have available
  */
diff --git a/arch/i386/pci/common.c b/arch/i386/pci/common.c
index 1220dd828ce3..0a362e3aeac5 100644
--- a/arch/i386/pci/common.c
+++ b/arch/i386/pci/common.c
@@ -237,11 +237,6 @@ char * __devinit  pcibios_setup(char *str)
                 pci_probe &= ~PCI_PROBE_MMCONF;
                 return NULL;
         }
-        /* override DMI blacklist */
-        else if (!strcmp(str, "mmconf")) {
-                pci_probe |= PCI_PROBE_MMCONF_FORCE;
-                return NULL;
-        }
 #endif
         else if (!strcmp(str, "noacpi")) {
                 acpi_noirq_set();
diff --git a/arch/i386/pci/mmconfig.c b/arch/i386/pci/mmconfig.c
index ef5a2faa7d82..972180f738d9 100644
--- a/arch/i386/pci/mmconfig.c
+++ b/arch/i386/pci/mmconfig.c
@@ -12,7 +12,6 @@
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/acpi.h>
-#include <linux/dmi.h>
 #include <asm/e820.h>
 #include "pci.h"
 
@@ -188,31 +187,9 @@ static __init void unreachable_devices(void)
         }
 }
 
-static int disable_mcfg(struct dmi_system_id *d)
-{
-        printk("PCI: %s detected. Disabling MCFG.\n", d->ident);
-        pci_probe &= ~PCI_PROBE_MMCONF;
-        return 0;
-}
-
-static struct dmi_system_id __initdata dmi_bad_mcfg[] = {
-        /* Has broken MCFG table that makes the system hang when used */
-        {
-         .callback = disable_mcfg,
-         .ident = "Intel D3C5105 SDV",
-         .matches = {
-                     DMI_MATCH(DMI_BIOS_VENDOR, "Intel"),
-                     DMI_MATCH(DMI_BOARD_NAME, "D26928"),
-                     },
-         },
-         {}
-};
-
 void __init pci_mmcfg_init(void)
 {
-        dmi_check_system(dmi_bad_mcfg);
-
-        if ((pci_probe & (PCI_PROBE_MMCONF_FORCE|PCI_PROBE_MMCONF)) == 0)
+        if ((pci_probe & PCI_PROBE_MMCONF) == 0)
                 return;
 
         acpi_table_parse(ACPI_MCFG, acpi_parse_mcfg);
@@ -221,6 +198,15 @@ void __init pci_mmcfg_init(void)
             (pci_mmcfg_config[0].base_address == 0))
                 return;
 
+        if (!e820_all_mapped(pci_mmcfg_config[0].base_address,
+                        pci_mmcfg_config[0].base_address + MMCONFIG_APER_MIN,
+                        E820_RESERVED)) {
+                printk(KERN_ERR "PCI: BIOS Bug: MCFG area at %x is not E820-reserved\n",
+                                pci_mmcfg_config[0].base_address);
+                printk(KERN_ERR "PCI: Not using MMCONFIG.\n");
+                return;
+        }
+
         printk(KERN_INFO "PCI: Using MMCONFIG\n");
         raw_pci_ops = &pci_mmcfg;
         pci_probe = (pci_probe & ~PCI_PROBE_MASK) | PCI_PROBE_MMCONF;
diff --git a/arch/i386/pci/pci.h b/arch/i386/pci/pci.h
index 49a849b3a241..bf4e79335388 100644
--- a/arch/i386/pci/pci.h
+++ b/arch/i386/pci/pci.h
@@ -16,8 +16,7 @@
 #define PCI_PROBE_CONF1         0x0002
 #define PCI_PROBE_CONF2         0x0004
 #define PCI_PROBE_MMCONF        0x0008
-#define PCI_PROBE_MMCONF_FORCE  0x0010
-#define PCI_PROBE_MASK          0x00ff
+#define PCI_PROBE_MASK          0x000f
 
 #define PCI_NO_SORT             0x0100
 #define PCI_BIOS_SORT           0x0200
diff --git a/arch/x86_64/kernel/e820.c b/arch/x86_64/kernel/e820.c
index 764bf23c7103..d6d7f731f6f0 100644
--- a/arch/x86_64/kernel/e820.c
+++ b/arch/x86_64/kernel/e820.c
@@ -108,6 +108,35 @@ e820_any_mapped(unsigned long start, unsigned long end, unsigned type)
         return 0;
 }
 
+/*
+ * This function checks if the entire range <start,end> is mapped with type.
+ *
+ * Note: this function only works correct if the e820 table is sorted and
+ * not-overlapping, which is the case
+ */
+int __init e820_all_mapped(unsigned long start, unsigned long end, unsigned type)
+{
+        int i;
+        for (i = 0; i < e820.nr_map; i++) {
+                struct e820entry *ei = &e820.map[i];
+                if (type && ei->type != type)
+                        continue;
+                /* is the region (part) in overlap with the current region ?*/
+                if (ei->addr >= end || ei->addr + ei->size <= start)
+                        continue;
+
+                /* if the region is at the beginning of <start,end> we move
+                 * start to the end of the region since it's ok until there
+                 */
+                if (ei->addr <= start)
+                        start = ei->addr + ei->size;
+                /* if start is now at or beyond end, we're done, full coverage */
+                if (start >= end)
+                        return 1; /* we're done */
+        }
+        return 0;
+}
+
 /* 
  * Find a free area in a specific range. 
  */ 
diff --git a/arch/x86_64/pci/mmconfig.c b/arch/x86_64/pci/mmconfig.c
index 2d48a7941d48..3c55c76c6fd5 100644
--- a/arch/x86_64/pci/mmconfig.c
+++ b/arch/x86_64/pci/mmconfig.c
@@ -9,7 +9,6 @@
 #include <linux/init.h>
 #include <linux/acpi.h>
 #include <linux/bitmap.h>
-#include <linux/dmi.h>
 #include <asm/e820.h>
 
 #include "pci.h"
@@ -165,33 +164,11 @@ static __init void unreachable_devices(void)
         }
 }
 
-static int disable_mcfg(struct dmi_system_id *d)
-{
-        printk("PCI: %s detected. Disabling MCFG.\n", d->ident);
-        pci_probe &= ~PCI_PROBE_MMCONF;
-        return 0;
-}
-
-static struct dmi_system_id __initdata dmi_bad_mcfg[] = {
-        /* Has broken MCFG table that makes the system hang when used */
-        {
-         .callback = disable_mcfg,
-         .ident = "Intel D3C5105 SDV",
-         .matches = {
-                     DMI_MATCH(DMI_BIOS_VENDOR, "Intel"),
-                     DMI_MATCH(DMI_BOARD_NAME, "D26928"),
-                     },
-         },
-         {}
-};
-
 void __init pci_mmcfg_init(void)
 {
         int i;
 
-        dmi_check_system(dmi_bad_mcfg);
-
-        if ((pci_probe & (PCI_PROBE_MMCONF|PCI_PROBE_MMCONF_FORCE)) == 0)
+        if ((pci_probe & PCI_PROBE_MMCONF) == 0)
                 return;
 
         acpi_table_parse(ACPI_MCFG, acpi_parse_mcfg);
@@ -200,6 +177,15 @@ void __init pci_mmcfg_init(void)
             (pci_mmcfg_config[0].base_address == 0))
                 return;
 
+        if (!e820_all_mapped(pci_mmcfg_config[0].base_address,
+                        pci_mmcfg_config[0].base_address + MMCONFIG_APER_MIN,
+                        E820_RESERVED)) {
+                printk(KERN_ERR "PCI: BIOS Bug: MCFG area at %x is not E820-reserved\n",
+                                pci_mmcfg_config[0].base_address);
+                printk(KERN_ERR "PCI: Not using MMCONFIG.\n");
+                return;
+        }
+
         /* RED-PEN i386 doesn't do _nocache right now */
         pci_mmcfg_virt = kmalloc(sizeof(*pci_mmcfg_virt) * pci_mmcfg_config_num, GFP_KERNEL);
         if (pci_mmcfg_virt == NULL) {
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index 39edb8250fbc..7ea49a0d5ec3 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -908,7 +908,7 @@ static void __xipram xip_enable(struct map_info *map, struct flchip *chip,
 
 static int __xipram xip_wait_for_operation(
                 struct map_info *map, struct flchip *chip,
-                unsigned long adr, int *chip_op_time )
+                unsigned long adr, unsigned int chip_op_time )
 {
         struct cfi_private *cfi = map->fldrv_priv;
         struct cfi_pri_intelext *cfip = cfi->cmdset_priv;
@@ -917,7 +917,7 @@ static int __xipram xip_wait_for_operation(
         flstate_t oldstate, newstate;
 
         start = xip_currtime();
-        usec = *chip_op_time * 8;
+        usec = chip_op_time * 8;
         if (usec == 0)
                 usec = 500000;
         done = 0;
@@ -1027,8 +1027,8 @@ static int __xipram xip_wait_for_operation(
 #define XIP_INVAL_CACHED_RANGE(map, from, size)  \
         INVALIDATE_CACHED_RANGE(map, from, size)
 
-#define INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, inval_adr, inval_len, p_usec) \
-        xip_wait_for_operation(map, chip, cmd_adr, p_usec)
+#define INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, inval_adr, inval_len, usec) \
+        xip_wait_for_operation(map, chip, cmd_adr, usec)
 
 #else
 
@@ -1040,64 +1040,64 @@ static int __xipram xip_wait_for_operation(
 static int inval_cache_and_wait_for_operation(
                 struct map_info *map, struct flchip *chip,
                 unsigned long cmd_adr, unsigned long inval_adr, int inval_len,
-                int *chip_op_time )
+                unsigned int chip_op_time)
 {
         struct cfi_private *cfi = map->fldrv_priv;
         map_word status, status_OK = CMD(0x80);
-        int z, chip_state = chip->state;
-        unsigned long timeo;
+        int chip_state = chip->state;
+        unsigned int timeo, sleep_time;
 
         spin_unlock(chip->mutex);
         if (inval_len)
                 INVALIDATE_CACHED_RANGE(map, inval_adr, inval_len);
-        if (*chip_op_time)
-                cfi_udelay(*chip_op_time);
         spin_lock(chip->mutex);
 
-        timeo = *chip_op_time * 8 * HZ / 1000000;
-        if (timeo < HZ/2)
-                timeo = HZ/2;
-        timeo += jiffies;
+        /* set our timeout to 8 times the expected delay */
+        timeo = chip_op_time * 8;
+        if (!timeo)
+                timeo = 500000;
+        sleep_time = chip_op_time / 2;
 
-        z = 0;
         for (;;) {
-                if (chip->state != chip_state) {
-                        /* Someone's suspended the operation: sleep */
-                        DECLARE_WAITQUEUE(wait, current);
-
-                        set_current_state(TASK_UNINTERRUPTIBLE);
-                        add_wait_queue(&chip->wq, &wait);
-                        spin_unlock(chip->mutex);
-                        schedule();
-                        remove_wait_queue(&chip->wq, &wait);
-                        timeo = jiffies + (HZ / 2); /* FIXME */
-                        spin_lock(chip->mutex);
-                        continue;
-                }
-
                 status = map_read(map, cmd_adr);
                 if (map_word_andequal(map, status, status_OK, status_OK))
                         break;
 
-                /* OK Still waiting */
-                if (time_after(jiffies, timeo)) {
+                if (!timeo) {
                         map_write(map, CMD(0x70), cmd_adr);
                         chip->state = FL_STATUS;
                         return -ETIME;
                 }
 
-                /* Latency issues. Drop the lock, wait a while and retry */
-                z++;
+                /* OK Still waiting. Drop the lock, wait a while and retry. */
                 spin_unlock(chip->mutex);
-                cfi_udelay(1);
+                if (sleep_time >= 1000000/HZ) {
+                        /*
+                         * Half of the normal delay still remaining
+                         * can be performed with a sleeping delay instead
+                         * of busy waiting.
+                         */
+                        msleep(sleep_time/1000);
+                        timeo -= sleep_time;
+                        sleep_time = 1000000/HZ;
+                } else {
+                        udelay(1);
+                        cond_resched();
+                        timeo--;
+                }
                 spin_lock(chip->mutex);
-        }
 
-        if (!z) {
-                if (!--(*chip_op_time))
-                        *chip_op_time = 1;
-        } else if (z > 1)
-                ++(*chip_op_time);
+                if (chip->state != chip_state) {
+                        /* Someone's suspended the operation: sleep */
+                        DECLARE_WAITQUEUE(wait, current);
+                        set_current_state(TASK_UNINTERRUPTIBLE);
+                        add_wait_queue(&chip->wq, &wait);
+                        spin_unlock(chip->mutex);
+                        schedule();
+                        remove_wait_queue(&chip->wq, &wait);
+                        spin_lock(chip->mutex);
+                }
+        }
 
         /* Done and happy. */
         chip->state = FL_STATUS;
@@ -1107,8 +1107,7 @@ static int inval_cache_and_wait_for_operation(
 #endif
 
 #define WAIT_TIMEOUT(map, chip, adr, udelay) \
-        ({ int __udelay = (udelay); \
-           INVAL_CACHE_AND_WAIT(map, chip, adr, 0, 0, &__udelay); })
+        INVAL_CACHE_AND_WAIT(map, chip, adr, 0, 0, udelay);
 
 
 static int do_point_onechip (struct map_info *map, struct flchip *chip, loff_t adr, size_t len)
@@ -1332,7 +1331,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
 
         ret = INVAL_CACHE_AND_WAIT(map, chip, adr,
                                    adr, map_bankwidth(map),
-                                   &chip->word_write_time);
+                                   chip->word_write_time);
         if (ret) {
                 xip_enable(map, chip, adr);
                 printk(KERN_ERR "%s: word write error (status timeout)\n", map->name);
@@ -1569,7 +1568,7 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
 
         ret = INVAL_CACHE_AND_WAIT(map, chip, cmd_adr,
                                    adr, len,
-                                   &chip->buffer_write_time);
+                                   chip->buffer_write_time);
         if (ret) {
                 map_write(map, CMD(0x70), cmd_adr);
                 chip->state = FL_STATUS;
@@ -1704,7 +1703,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
 
         ret = INVAL_CACHE_AND_WAIT(map, chip, adr,
                                    adr, len,
-                                   &chip->erase_time);
+                                   chip->erase_time);
         if (ret) {
                 map_write(map, CMD(0x70), adr);
                 chip->state = FL_STATUS;
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index 9885726a16e4..a482e8922de1 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -45,9 +45,11 @@
 #define MAX_WORD_RETRIES 3
 
 #define MANUFACTURER_AMD        0x0001
+#define MANUFACTURER_ATMEL      0x001F
 #define MANUFACTURER_SST        0x00BF
 #define SST49LF004B             0x0060
 #define SST49LF008A             0x005a
+#define AT49BV6416              0x00d6
 
 static int cfi_amdstd_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
 static int cfi_amdstd_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
@@ -68,6 +70,9 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
 static void put_chip(struct map_info *map, struct flchip *chip, unsigned long adr);
 #include "fwh_lock.h"
 
+static int cfi_atmel_lock(struct mtd_info *mtd, loff_t ofs, size_t len);
+static int cfi_atmel_unlock(struct mtd_info *mtd, loff_t ofs, size_t len);
+
 static struct mtd_chip_driver cfi_amdstd_chipdrv = {
         .probe          = NULL, /* Not usable directly */
         .destroy        = cfi_amdstd_destroy,
@@ -161,6 +166,26 @@ static void fixup_use_write_buffers(struct mtd_info *mtd, void *param)
         }
 }
 
+/* Atmel chips don't use the same PRI format as AMD chips */
+static void fixup_convert_atmel_pri(struct mtd_info *mtd, void *param)
+{
+        struct map_info *map = mtd->priv;
+        struct cfi_private *cfi = map->fldrv_priv;
+        struct cfi_pri_amdstd *extp = cfi->cmdset_priv;
+        struct cfi_pri_atmel atmel_pri;
+
+        memcpy(&atmel_pri, extp, sizeof(atmel_pri));
+        memset((char *)extp + 5, 0, sizeof(*extp) - 5);
+
+        if (atmel_pri.Features & 0x02)
+                extp->EraseSuspend = 2;
+
+        if (atmel_pri.BottomBoot)
+                extp->TopBottom = 2;
+        else
+                extp->TopBottom = 3;
+}
+
 static void fixup_use_secsi(struct mtd_info *mtd, void *param)
 {
         /* Setup for chips with a secsi area */
@@ -179,6 +204,16 @@ static void fixup_use_erase_chip(struct mtd_info *mtd, void *param)
 
 }
 
+/*
+ * Some Atmel chips (e.g. the AT49BV6416) power-up with all sectors
+ * locked by default.
+ */
+static void fixup_use_atmel_lock(struct mtd_info *mtd, void *param)
+{
+        mtd->lock = cfi_atmel_lock;
+        mtd->unlock = cfi_atmel_unlock;
+}
+
 static struct cfi_fixup cfi_fixup_table[] = {
 #ifdef AMD_BOOTLOC_BUG
         { CFI_MFR_AMD, CFI_ID_ANY, fixup_amd_bootblock, NULL },
@@ -192,6 +227,7 @@ static struct cfi_fixup cfi_fixup_table[] = {
 #if !FORCE_WORD_WRITE
         { CFI_MFR_ANY, CFI_ID_ANY, fixup_use_write_buffers, NULL, },
 #endif
+        { CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
         { 0, 0, NULL, NULL }
 };
 static struct cfi_fixup jedec_fixup_table[] = {
@@ -207,6 +243,7 @@ static struct cfi_fixup fixup_table[] = {
          * we know that is the case.
          */
         { CFI_MFR_ANY, CFI_ID_ANY, fixup_use_erase_chip, NULL },
+        { CFI_MFR_ATMEL, AT49BV6416, fixup_use_atmel_lock, NULL },
         { 0, 0, NULL, NULL }
 };
 
@@ -1607,6 +1644,80 @@ static int cfi_amdstd_erase_chip(struct mtd_info *mtd, struct erase_info *instr)
         return 0;
 }
 
+static int do_atmel_lock(struct map_info *map, struct flchip *chip,
+                         unsigned long adr, int len, void *thunk)
+{
+        struct cfi_private *cfi = map->fldrv_priv;
+        int ret;
+
+        spin_lock(chip->mutex);
+        ret = get_chip(map, chip, adr + chip->start, FL_LOCKING);
+        if (ret)
+                goto out_unlock;
+        chip->state = FL_LOCKING;
+
+        DEBUG(MTD_DEBUG_LEVEL3, "MTD %s(): LOCK 0x%08lx len %d\n",
+              __func__, adr, len);
+
+        cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi,
+                         cfi->device_type, NULL);
+        cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi,
+                         cfi->device_type, NULL);
+        cfi_send_gen_cmd(0x80, cfi->addr_unlock1, chip->start, map, cfi,
+                         cfi->device_type, NULL);
+        cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi,
+                         cfi->device_type, NULL);
+        cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi,
+                         cfi->device_type, NULL);
+        map_write(map, CMD(0x40), chip->start + adr);
+
+        chip->state = FL_READY;
+        put_chip(map, chip, adr + chip->start);
+        ret = 0;
+
+out_unlock:
+        spin_unlock(chip->mutex);
+        return ret;
+}
+
+static int do_atmel_unlock(struct map_info *map, struct flchip *chip,
+                           unsigned long adr, int len, void *thunk)
+{
+        struct cfi_private *cfi = map->fldrv_priv;
+        int ret;
+
+        spin_lock(chip->mutex);
+        ret = get_chip(map, chip, adr + chip->start, FL_UNLOCKING);
+        if (ret)
+                goto out_unlock;
+        chip->state = FL_UNLOCKING;
+
+        DEBUG(MTD_DEBUG_LEVEL3, "MTD %s(): LOCK 0x%08lx len %d\n",
+              __func__, adr, len);
+
+        cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi,
+                         cfi->device_type, NULL);
+        map_write(map, CMD(0x70), adr);
+
+        chip->state = FL_READY;
+        put_chip(map, chip, adr + chip->start);
+        ret = 0;
+
+out_unlock:
+        spin_unlock(chip->mutex);
+        return ret;
+}
+
+static int cfi_atmel_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+{
+        return cfi_varsize_frob(mtd, do_atmel_lock, ofs, len, NULL);
+}
+
+static int cfi_atmel_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+{
+        return cfi_varsize_frob(mtd, do_atmel_unlock, ofs, len, NULL);
+}
+
 
 static void cfi_amdstd_sync (struct mtd_info *mtd)
 {
diff --git a/drivers/mtd/chips/jedec_probe.c b/drivers/mtd/chips/jedec_probe.c
index 8f39d0a31438..1154dac715aa 100644
--- a/drivers/mtd/chips/jedec_probe.c
+++ b/drivers/mtd/chips/jedec_probe.c
@@ -111,6 +111,7 @@
 #define MX29LV040C      0x004F
 #define MX29LV160T      0x22C4
 #define MX29LV160B      0x2249
+#define MX29F040        0x00A4
 #define MX29F016        0x00AD
 #define MX29F002T       0x00B0
 #define MX29F004T       0x0045
@@ -1172,6 +1173,19 @@ static const struct amd_flash_info jedec_table[] = {
                 }
         }, {
                 .mfr_id         = MANUFACTURER_MACRONIX,
+                .dev_id         = MX29F040,
+                .name           = "Macronix MX29F040",
+                .uaddr          = {
+                        [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
+                },
+                .DevSize        = SIZE_512KiB,
+                .CmdSet         = P_ID_AMD_STD,
+                .NumEraseRegions= 1,
+                .regions        = {
+                        ERASEINFO(0x10000,8),
+                }
+        }, {
+                .mfr_id         = MANUFACTURER_MACRONIX,
                 .dev_id         = MX29F016,
                 .name           = "Macronix MX29F016",
                 .uaddr          = {
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index ede3561be870..401c6a294baa 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -18,6 +18,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/buffer_head.h>
 #include <linux/mutex.h>
+#include <linux/mount.h>
 
 #define VERSION "$Revision: 1.30 $"
 
@@ -236,6 +237,8 @@ static int _block2mtd_write(struct block2mtd_dev *dev, const u_char *buf,
         }
         return 0;
 }
+
+
 static int block2mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
                 size_t *retlen, const u_char *buf)
 {
@@ -299,6 +302,19 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size)
 
         /* Get a handle on the device */
         bdev = open_bdev_excl(devname, O_RDWR, NULL);
+#ifndef MODULE
+        if (IS_ERR(bdev)) {
+
+                /* We might not have rootfs mounted at this point. Try
+                   to resolve the device name by other means. */
+
+                dev_t dev = name_to_dev_t(devname);
+                if (dev != 0) {
+                        bdev = open_by_devnum(dev, FMODE_WRITE | FMODE_READ);
+                }
+        }
+#endif
+
         if (IS_ERR(bdev)) {
                 ERROR("error: cannot open device %s", devname);
                 goto devinit_err;
@@ -393,26 +409,6 @@ static int parse_num(size_t *num, const char *token)
 }
 
 
-static int parse_name(char **pname, const char *token, size_t limit)
-{
-        size_t len;
-        char *name;
-
-        len = strlen(token) + 1;
-        if (len > limit)
-                return -ENOSPC;
-
-        name = kmalloc(len, GFP_KERNEL);
-        if (!name)
-                return -ENOMEM;
-
-        strcpy(name, token);
-
-        *pname = name;
-        return 0;
-}
-
-
 static inline void kill_final_newline(char *str)
 {
         char *newline = strrchr(str, '\n');
@@ -426,9 +422,15 @@ static inline void kill_final_newline(char *str)
         return 0;                               \
 } while (0)
 
-static int block2mtd_setup(const char *val, struct kernel_param *kp)
+#ifndef MODULE
+static int block2mtd_init_called = 0;
+static __initdata char block2mtd_paramline[80 + 12]; /* 80 for device, 12 for erase size */
+#endif
+
+
+static int block2mtd_setup2(const char *val)
 {
-        char buf[80+12]; /* 80 for device, 12 for erase size */
+        char buf[80 + 12]; /* 80 for device, 12 for erase size */
         char *str = buf;
         char *token[2];
         char *name;
@@ -450,13 +452,9 @@ static int block2mtd_setup(const char *val, struct kernel_param *kp)
         if (!token[0])
                 parse_err("no argument");
 
-        ret = parse_name(&name, token[0], 80);
-        if (ret == -ENOMEM)
-                parse_err("out of memory");
-        if (ret == -ENOSPC)
-                parse_err("name too long");
-        if (ret)
-                return 0;
+        name = token[0];
+        if (strlen(name) + 1 > 80)
+                parse_err("device name too long");
 
         if (token[1]) {
                 ret = parse_num(&erase_size, token[1]);
@@ -472,13 +470,48 @@ static int block2mtd_setup(const char *val, struct kernel_param *kp)
 }
 
 
+static int block2mtd_setup(const char *val, struct kernel_param *kp)
+{
+#ifdef MODULE
+        return block2mtd_setup2(val);
+#else
+        /* If more parameters are later passed in via
+           /sys/module/block2mtd/parameters/block2mtd
+           and block2mtd_init() has already been called,
+           we can parse the argument now. */
+
+        if (block2mtd_init_called)
+                return block2mtd_setup2(val);
+
+        /* During early boot stage, we only save the parameters
+           here. We must parse them later: if the param passed
+           from kernel boot command line, block2mtd_setup() is
+           called so early that it is not possible to resolve
+           the device (even kmalloc() fails). Deter that work to
+           block2mtd_setup2(). */
+
+        strlcpy(block2mtd_paramline, val, sizeof(block2mtd_paramline));
+
+        return 0;
+#endif
+}
+
+
 module_param_call(block2mtd, block2mtd_setup, NULL, NULL, 0200);
 MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>]\"");
 
 static int __init block2mtd_init(void)
 {
+        int ret = 0;
         INFO("version " VERSION);
-        return 0;
+
+#ifndef MODULE
+        if (strlen(block2mtd_paramline))
+                ret = block2mtd_setup2(block2mtd_paramline);
+        block2mtd_init_called = 1;
+#endif
+
+        return ret;
 }
 
 
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index a8466141e914..ef4a731ca5c2 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -406,13 +406,13 @@ struct flash_info {
 
 static struct flash_info __devinitdata m25p_data [] = {
         /* REVISIT: fill in JEDEC ids, for parts that have them */
-        { "m25p05", 0x05, 0x0000, 32 * 1024, 2 },
-        { "m25p10", 0x10, 0x0000, 32 * 1024, 4 },
-        { "m25p20", 0x11, 0x0000, 64 * 1024, 4 },
-        { "m25p40", 0x12, 0x0000, 64 * 1024, 8 },
+        { "m25p05", 0x05, 0x2010, 32 * 1024, 2 },
+        { "m25p10", 0x10, 0x2011, 32 * 1024, 4 },
+        { "m25p20", 0x11, 0x2012, 64 * 1024, 4 },
+        { "m25p40", 0x12, 0x2013, 64 * 1024, 8 },
         { "m25p80", 0x13, 0x0000, 64 * 1024, 16 },
-        { "m25p16", 0x14, 0x0000, 64 * 1024, 32 },
-        { "m25p32", 0x15, 0x0000, 64 * 1024, 64 },
+        { "m25p16", 0x14, 0x2015, 64 * 1024, 32 },
+        { "m25p32", 0x15, 0x2016, 64 * 1024, 64 },
         { "m25p64", 0x16, 0x2017, 64 * 1024, 128 },
 };
 
diff --git a/drivers/mtd/devices/pmc551.c b/drivers/mtd/devices/pmc551.c
index 6f9bbf6fee4d..2c0149708739 100644
--- a/drivers/mtd/devices/pmc551.c
+++ b/drivers/mtd/devices/pmc551.c
@@ -99,10 +99,6 @@
 #include <asm/system.h>
 #include <linux/pci.h>
 
-#ifndef CONFIG_PCI
-#error Enable PCI in your kernel config
-#endif
-
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/pmc551.h>
 #include <linux/mtd/compatmac.h>
diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index 83d0b2a52527..64d1b6a6c920 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -13,13 +13,13 @@ config MTD_COMPLEX_MAPPINGS
 
 config MTD_PHYSMAP
         tristate "CFI Flash device in physical memory map"
-        depends on MTD_CFI
+        depends on MTD_CFI || MTD_JEDECPROBE || MTD_ROM
         help
-          This provides a 'mapping' driver which allows the CFI probe and
-          command set driver code to communicate with flash chips which
-          are mapped physically into the CPU's memory. You will need to
-          configure the physical address and size of the flash chips on
-          your particular board as well as the bus width, either statically
+          This provides a 'mapping' driver which allows the NOR Flash and
+          ROM driver code to communicate with chips which are mapped
+          physically into the CPU's memory. You will need to configure
+          the physical address and size of the flash chips on your
+          particular board as well as the bus width, either statically
           with config options or at run-time.
 
 config MTD_PHYSMAP_START
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index fb8b4f7e48d3..5b6acfcb2b88 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -62,15 +62,12 @@ static loff_t mtd_lseek (struct file *file, loff_t offset, int orig)
         struct mtd_info *mtd = mfi->mtd;
 
         switch (orig) {
-        case 0:
-                /* SEEK_SET */
+        case SEEK_SET:
                 break;
-        case 1:
-                /* SEEK_CUR */
+        case SEEK_CUR:
                 offset += file->f_pos;
                 break;
-        case 2:
-                /* SEEK_END */
+        case SEEK_END:
                 offset += mtd->size;
                 break;
         default:
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 3db77eec0ed2..c99302ed3823 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -11,7 +11,7 @@ config MTD_NAND
         help
           This enables support for accessing all type of NAND flash
           devices. For further information see
-          <http://www.linux-mtd.infradead.org/tech/nand.html>.
+          <http://www.linux-mtd.infradead.org/doc/nand.html>.
 
 config MTD_NAND_VERIFY_WRITE
         bool "Verify NAND page writes"
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 0a54d003ef34..975b2ef61121 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2224,7 +2224,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
         }
 
         /* Try to identify manufacturer */
-        for (maf_idx = 0; nand_manuf_ids[maf_idx].id != 0x0; maf_id++) {
+        for (maf_idx = 0; nand_manuf_ids[maf_idx].id != 0x0; maf_idx++) {
                 if (nand_manuf_ids[maf_idx].id == *maf_id)
                         break;
         }
diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c
index fbeedc3184e9..51c7288ab49a 100644
--- a/drivers/mtd/nand/sharpsl.c
+++ b/drivers/mtd/nand/sharpsl.c
@@ -78,7 +78,7 @@ static struct mtd_partition sharpsl_nand_default_partition_info[] = {
 /*
  *      hardware specific access to control-lines
  *      ctrl:
- *      NAND_CNE: bit 0 -> bit 0 & 4
+ *      NAND_CNE: bit 0 -> ! bit 0 & 4
  *      NAND_CLE: bit 1 -> bit 1
  *      NAND_ALE: bit 2 -> bit 2
  *
@@ -92,7 +92,10 @@ static void sharpsl_nand_hwcontrol(struct mtd_info *mtd, int cmd,
                 unsigned char bits = ctrl & 0x07;
 
                 bits |= (ctrl & 0x01) << 4;
-                writeb((readb(FLASHCTL) & 0x17) | bits, FLASHCTL);
+
+                bits ^= 0x11;
+
+                writeb((readb(FLASHCTL) & ~0x17) | bits, FLASHCTL);
         }
 
         if (cmd != NAND_CMD_NONE)
diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c
index d4870432ecfc..b1981d0e95ad 100644
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -539,7 +539,6 @@ unsigned long ext2_count_free (struct buffer_head * map, unsigned int numchars)
 
 #endif  /*  EXT2FS_DEBUG  */
 
-/* Superblock must be locked */
 unsigned long ext2_count_free_blocks (struct super_block * sb)
 {
         struct ext2_group_desc * desc;
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index de85c61c58c5..695f69ccf908 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -637,7 +637,6 @@ fail:
         return ERR_PTR(err);
 }
 
-/* Superblock must be locked */
 unsigned long ext2_count_free_inodes (struct super_block * sb)
 {
         struct ext2_group_desc *desc;
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index ca5bfb6914d2..4286ff6330b6 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -1083,7 +1083,6 @@ static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf)
         unsigned long overhead;
         int i;
 
-        lock_super(sb);
         if (test_opt (sb, MINIX_DF))
                 overhead = 0;
         else {
@@ -1124,7 +1123,6 @@ static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf)
         buf->f_files = le32_to_cpu(sbi->s_es->s_inodes_count);
         buf->f_ffree = ext2_count_free_inodes (sb);
         buf->f_namelen = EXT2_NAME_LEN;
-        unlock_super(sb);
         return 0;
 }
 
diff --git a/fs/jffs2/nodelist.c b/fs/jffs2/nodelist.c
index 7675b33396c7..5a6b4d64206c 100644
--- a/fs/jffs2/nodelist.c
+++ b/fs/jffs2/nodelist.c
@@ -21,6 +21,9 @@
 #include <linux/pagemap.h>
 #include "nodelist.h"
 
+static void jffs2_obsolete_node_frag(struct jffs2_sb_info *c,
+                                     struct jffs2_node_frag *this);
+
 void jffs2_add_fd_to_list(struct jffs2_sb_info *c, struct jffs2_full_dirent *new, struct jffs2_full_dirent **list)
 {
         struct jffs2_full_dirent **prev = list;
@@ -87,7 +90,8 @@ void jffs2_truncate_fragtree(struct jffs2_sb_info *c, struct rb_root *list, uint
         }
 }
 
-void jffs2_obsolete_node_frag(struct jffs2_sb_info *c, struct jffs2_node_frag *this)
+static void jffs2_obsolete_node_frag(struct jffs2_sb_info *c,
+                                     struct jffs2_node_frag *this)
 {
         if (this->node) {
                 this->node->frags--;
diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h
index cae92c14116d..0ddfd70307fb 100644
--- a/fs/jffs2/nodelist.h
+++ b/fs/jffs2/nodelist.h
@@ -334,7 +334,6 @@ void jffs2_kill_fragtree(struct rb_root *root, struct jffs2_sb_info *c_delete);
 struct rb_node *rb_next(struct rb_node *);
 struct rb_node *rb_prev(struct rb_node *);
 void rb_replace_node(struct rb_node *victim, struct rb_node *new, struct rb_root *root);
-void jffs2_obsolete_node_frag(struct jffs2_sb_info *c, struct jffs2_node_frag *this);
 int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_full_dnode *fn);
 void jffs2_truncate_fragtree (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size);
 int jffs2_add_older_frag_to_fragtree(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_tmp_dnode_info *tn);
diff --git a/fs/jffs2/xattr.c b/fs/jffs2/xattr.c
index 25bc1ae08648..4da09ce1d1f5 100644
--- a/fs/jffs2/xattr.c
+++ b/fs/jffs2/xattr.c
@@ -1215,7 +1215,6 @@ int jffs2_garbage_collect_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xatt
         rc = jffs2_reserve_space_gc(c, totlen, &length, JFFS2_SUMMARY_XATTR_SIZE);
         if (rc) {
                 JFFS2_WARNING("jffs2_reserve_space_gc()=%d, request=%u\n", rc, totlen);
-                rc = rc ? rc : -EBADFD;
                 goto out;
         }
         rc = save_xattr_datum(c, xd);
diff --git a/include/asm-m68k/page.h b/include/asm-m68k/page.h
index db017f838c29..fcc165ddd09e 100644
--- a/include/asm-m68k/page.h
+++ b/include/asm-m68k/page.h
@@ -2,6 +2,8 @@
 #define _M68K_PAGE_H
 
 
+#ifdef __KERNEL__
+
 /* PAGE_SHIFT determines the page size */
 #ifndef CONFIG_SUN3
 #define PAGE_SHIFT      (12)
@@ -15,8 +17,6 @@
 #endif
 #define PAGE_MASK       (~(PAGE_SIZE-1))
 
-#ifdef __KERNEL__
-
 #include <asm/setup.h>
 
 #if PAGE_SHIFT < 13
@@ -175,8 +175,8 @@ static inline void *__va(unsigned long x)
 #define VM_DATA_DEFAULT_FLAGS   (VM_READ | VM_WRITE | VM_EXEC | \
                                  VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
-#endif /* __KERNEL__ */
-
 #include <asm-generic/page.h>
 
+#endif /* __KERNEL__ */
+
 #endif /* _M68K_PAGE_H */
diff --git a/include/asm-parisc/page.h b/include/asm-parisc/page.h
index 0695bc958d56..57d6d82756dd 100644
--- a/include/asm-parisc/page.h
+++ b/include/asm-parisc/page.h
@@ -1,22 +1,14 @@
 #ifndef _PARISC_PAGE_H
 #define _PARISC_PAGE_H
 
-#if !defined(__KERNEL__)
-/* this is for userspace applications (4k page size) */
-# define PAGE_SHIFT     12      /* 4k */
-# define PAGE_SIZE      (1UL << PAGE_SHIFT)
-# define PAGE_MASK      (~(PAGE_SIZE-1))
-#endif
-
-
 #ifdef __KERNEL__
 
 #if defined(CONFIG_PARISC_PAGE_SIZE_4KB)
-# define PAGE_SHIFT     12      /* 4k */
+# define PAGE_SHIFT     12
 #elif defined(CONFIG_PARISC_PAGE_SIZE_16KB)
-# define PAGE_SHIFT     14      /* 16k */
+# define PAGE_SHIFT     14
 #elif defined(CONFIG_PARISC_PAGE_SIZE_64KB)
-# define PAGE_SHIFT     16      /* 64k */
+# define PAGE_SHIFT     16
 #else
 # error "unknown default kernel page size"
 #endif
@@ -188,9 +180,9 @@ extern int npmem_ranges;
 #define VM_DATA_DEFAULT_FLAGS   (VM_READ | VM_WRITE | VM_EXEC | \
                                  VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
-#endif /* __KERNEL__ */
-
 #include <asm-generic/memory_model.h>
 #include <asm-generic/page.h>
 
+#endif /* __KERNEL__ */
+
 #endif /* _PARISC_PAGE_H */
diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h
index 09bfae6938b3..123948b14547 100644
--- a/include/linux/mtd/cfi.h
+++ b/include/linux/mtd/cfi.h
@@ -199,6 +199,18 @@ struct cfi_pri_amdstd {
         uint8_t  TopBottom;
 } __attribute__((packed));
 
+/* Vendor-Specific PRI for Atmel chips (command set 0x0002) */
+
+struct cfi_pri_atmel {
+        uint8_t pri[3];
+        uint8_t MajorVersion;
+        uint8_t MinorVersion;
+        uint8_t Features;
+        uint8_t BottomBoot;
+        uint8_t BurstMode;
+        uint8_t PageMode;
+} __attribute__((packed));
+
 struct cfi_pri_query {
         uint8_t  NumFields;
         uint32_t ProtField[1]; /* Not host ordered */
@@ -464,6 +476,7 @@ struct cfi_fixup {
 #define CFI_ID_ANY  0xffff
 
 #define CFI_MFR_AMD 0x0001
+#define CFI_MFR_ATMEL 0x001F
 #define CFI_MFR_ST  0x0020      /* STMicroelectronics */
 
 void cfi_fixup(struct mtd_info *mtd, struct cfi_fixup* fixups);
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 9336f2e89e40..ac1f850d4937 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -252,7 +252,7 @@ handle_level_irq(unsigned int irq, struct irq_desc *desc, struct pt_regs *regs)
         mask_ack_irq(desc, irq);
 
         if (unlikely(desc->status & IRQ_INPROGRESS))
-                goto out;
+                goto out_unlock;
         desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
         kstat_cpu(cpu).irqs[irq]++;
 
@@ -263,7 +263,7 @@ handle_level_irq(unsigned int irq, struct irq_desc *desc, struct pt_regs *regs)
         action = desc->action;
         if (unlikely(!action || (desc->status & IRQ_DISABLED))) {
                 desc->status |= IRQ_PENDING;
-                goto out;
+                goto out_unlock;
         }
 
         desc->status |= IRQ_INPROGRESS;
@@ -276,9 +276,9 @@ handle_level_irq(unsigned int irq, struct irq_desc *desc, struct pt_regs *regs)
 
         spin_lock(&desc->lock);
         desc->status &= ~IRQ_INPROGRESS;
-out:
         if (!(desc->status & IRQ_DISABLED) && desc->chip->unmask)
                 desc->chip->unmask(irq);
+out_unlock:
         spin_unlock(&desc->lock);
 }