9 files changed, 58 insertions, 18 deletions

diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index d3f0a62efcc1..ee68ac54c0d4 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -138,7 +138,7 @@ static struct dmi_system_id __cpuinitdata processor_idle_dmi_table[] = {
         {
         set_no_mwait, "Extensa 5220", {
         DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
-        DMI_MATCH(DMI_SYS_VENDOR, "ACER"),
+        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
         DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
         DMI_MATCH(DMI_BOARD_NAME, "Columbia") }, NULL},
         {},
diff --git a/drivers/gpu/drm/radeon/radeon_cp.c b/drivers/gpu/drm/radeon/radeon_cp.c
index 3331f88dcfb6..248ab4a7d39f 100644
--- a/drivers/gpu/drm/radeon/radeon_cp.c
+++ b/drivers/gpu/drm/radeon/radeon_cp.c
@@ -223,7 +223,7 @@ static int radeon_do_wait_for_fifo(drm_radeon_private_t * dev_priv, int entries)
                         return 0;
                 DRM_UDELAY(1);
         }
-        DRM_INFO("wait for fifo failed status : 0x%08X 0x%08X\n",
+        DRM_DEBUG("wait for fifo failed status : 0x%08X 0x%08X\n",
                  RADEON_READ(RADEON_RBBM_STATUS),
                  RADEON_READ(R300_VAP_CNTL_STATUS));
 
@@ -252,7 +252,7 @@ static int radeon_do_wait_for_idle(drm_radeon_private_t * dev_priv)
                 }
                 DRM_UDELAY(1);
         }
-        DRM_INFO("wait idle failed status : 0x%08X 0x%08X\n",
+        DRM_DEBUG("wait idle failed status : 0x%08X 0x%08X\n",
                  RADEON_READ(RADEON_RBBM_STATUS),
                  RADEON_READ(R300_VAP_CNTL_STATUS));
 
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 49a8c589e346..f1489999cf91 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -1933,6 +1933,7 @@ static void ide_cd_remove(ide_drive_t *drive)
 
         ide_proc_unregister_driver(drive, info->driver);
 
+        blk_unregister_filter(info->disk);
         del_gendisk(info->disk);
 
         ide_cd_put(info);
@@ -2158,6 +2159,7 @@ static int ide_cd_probe(ide_drive_t *drive)
         g->fops = &idecd_ops;
         g->flags |= GENHD_FL_REMOVABLE;
         add_disk(g);
+        blk_register_filter(g);
         return 0;
 
 out_free_cd:
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index 7e65bad522cb..ac89a5deaca2 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -238,15 +238,47 @@ static struct page *read_sb_page(mddev_t *mddev, long offset, unsigned long inde
 
 }
 
+static mdk_rdev_t *next_active_rdev(mdk_rdev_t *rdev, mddev_t *mddev)
+{
+        /* Iterate the disks of an mddev, using rcu to protect access to the
+         * linked list, and raising the refcount of devices we return to ensure
+         * they don't disappear while in use.
+         * As devices are only added or removed when raid_disk is < 0 and
+         * nr_pending is 0 and In_sync is clear, the entries we return will
+         * still be in the same position on the list when we re-enter
+         * list_for_each_continue_rcu.
+         */
+        struct list_head *pos;
+        rcu_read_lock();
+        if (rdev == NULL)
+                /* start at the beginning */
+                pos = &mddev->disks;
+        else {
+                /* release the previous rdev and start from there. */
+                rdev_dec_pending(rdev, mddev);
+                pos = &rdev->same_set;
+        }
+        list_for_each_continue_rcu(pos, &mddev->disks) {
+                rdev = list_entry(pos, mdk_rdev_t, same_set);
+                if (rdev->raid_disk >= 0 &&
+                    test_bit(In_sync, &rdev->flags) &&
+                    !test_bit(Faulty, &rdev->flags)) {
+                        /* this is a usable devices */
+                        atomic_inc(&rdev->nr_pending);
+                        rcu_read_unlock();
+                        return rdev;
+                }
+        }
+        rcu_read_unlock();
+        return NULL;
+}
+
 static int write_sb_page(struct bitmap *bitmap, struct page *page, int wait)
 {
-        mdk_rdev_t *rdev;
+        mdk_rdev_t *rdev = NULL;
         mddev_t *mddev = bitmap->mddev;
 
-        rcu_read_lock();
-        rdev_for_each_rcu(rdev, mddev)
-                if (test_bit(In_sync, &rdev->flags)
-                    && !test_bit(Faulty, &rdev->flags)) {
+        while ((rdev = next_active_rdev(rdev, mddev)) != NULL) {
                         int size = PAGE_SIZE;
                         if (page->index == bitmap->file_pages-1)
                                 size = roundup(bitmap->last_page_size,
@@ -281,8 +313,7 @@ static int write_sb_page(struct bitmap *bitmap, struct page *page, int wait)
                                        + page->index * (PAGE_SIZE/512),
                                        size,
                                        page);
-                }
-        rcu_read_unlock();
+        }
 
         if (wait)
                 md_super_wait(mddev);
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 8cfadc5bd2ba..4790c83d78d0 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -3841,8 +3841,6 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open)
 
                 del_timer_sync(&mddev->safemode_timer);
 
-                invalidate_partition(disk, 0);
-
                 switch(mode) {
                 case 1: /* readonly */
                         err  = -ENXIO;
diff --git a/drivers/media/video/dabusb.c b/drivers/media/video/dabusb.c
index 48f4b92a8f8b..79faedf58521 100644
--- a/drivers/media/video/dabusb.c
+++ b/drivers/media/video/dabusb.c
@@ -403,6 +403,7 @@ static int dabusb_fpga_download (pdabusb_t s, const char *fname)
         ret = request_firmware(&fw, "dabusb/bitstream.bin", &s->usbdev->dev);
         if (ret) {
                 err("Failed to load \"dabusb/bitstream.bin\": %d\n", ret);
+                kfree(b);
                 return ret;
         }
 
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index d2f331876e4c..e00d424e6575 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -410,16 +410,20 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
 
         case MEMGETREGIONINFO:
         {
-                struct region_info_user ur;
+                uint32_t ur_idx;
+                struct mtd_erase_region_info *kr;
+                struct region_info_user *ur = (struct region_info_user *) argp;
 
-                if (copy_from_user(&ur, argp, sizeof(struct region_info_user)))
+                if (get_user(ur_idx, &(ur->regionindex)))
                         return -EFAULT;
 
-                if (ur.regionindex >= mtd->numeraseregions)
-                        return -EINVAL;
-                if (copy_to_user(argp, &(mtd->eraseregions[ur.regionindex]),
-                                sizeof(struct mtd_erase_region_info)))
+                kr = &(mtd->eraseregions[ur_idx]);
+
+                if (put_user(kr->offset, &(ur->offset))
+                    || put_user(kr->erasesize, &(ur->erasesize))
+                    || put_user(kr->numblocks, &(ur->numblocks)))
                         return -EFAULT;
+
                 break;
         }
 
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index e5e7d7856454..2a2bc89aba83 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1875,6 +1875,7 @@ static int sd_probe(struct device *dev)
 
         dev_set_drvdata(dev, sdkp);
         add_disk(gd);
+        blk_register_filter(gd);
         sd_dif_config_host(sdkp);
 
         sd_printk(KERN_NOTICE, sdkp, "Attached SCSI %sdisk\n",
@@ -1908,6 +1909,7 @@ static int sd_remove(struct device *dev)
         struct scsi_disk *sdkp = dev_get_drvdata(dev);
 
         device_del(&sdkp->dev);
+        blk_unregister_filter(sdkp->disk);
         del_gendisk(sdkp->disk);
         sd_shutdown(dev);
 
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 27f5bfd1def3..3292965bfd84 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -656,6 +656,7 @@ static int sr_probe(struct device *dev)
         dev_set_drvdata(dev, cd);
         disk->flags |= GENHD_FL_REMOVABLE;
         add_disk(disk);
+        blk_register_filter(disk);
 
         sdev_printk(KERN_DEBUG, sdev,
                     "Attached scsi CD-ROM %s\n", cd->cdi.name);
@@ -894,6 +895,7 @@ static int sr_remove(struct device *dev)
 {
         struct scsi_cd *cd = dev_get_drvdata(dev);
 
+        blk_unregister_filter(cd->disk);
         del_gendisk(cd->disk);
 
         mutex_lock(&sr_ref_mutex);