1 files changed, 32 insertions, 11 deletions

diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 137a708bb215..4bc2c43fa083 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -546,28 +546,49 @@ int rescan_partitions(struct gendisk *disk, struct block_device *bdev)
 
         /* add partitions */
         for (p = 1; p < state->limit; p++) {
-                sector_t size = state->parts[p].size;
-                sector_t from = state->parts[p].from;
+                sector_t size, from;
+try_scan:
+                size = state->parts[p].size;
                 if (!size)
                         continue;
+
+                from = state->parts[p].from;
                 if (from >= get_capacity(disk)) {
                         printk(KERN_WARNING
                                "%s: p%d ignored, start %llu is behind the end of the disk\n",
                                disk->disk_name, p, (unsigned long long) from);
                         continue;
                 }
+
                 if (from + size > get_capacity(disk)) {
-                        /*
-                         * we can not ignore partitions of broken tables
-                         * created by for example camera firmware, but we
-                         * limit them to the end of the disk to avoid
-                         * creating invalid block devices
-                         */
+                        struct block_device_operations *bdops = disk->fops;
+                        unsigned long long capacity;
+
                         printk(KERN_WARNING
-                               "%s: p%d size %llu exceeds device capacity, "
-                               "limited to end of disk\n",
+                               "%s: p%d size %llu exceeds device capacity, ",
                                disk->disk_name, p, (unsigned long long) size);
-                        size = get_capacity(disk) - from;
+
+                        if (bdops->set_capacity &&
+                            (disk->flags & GENHD_FL_NATIVE_CAPACITY) == 0) {
+                                printk(KERN_CONT "enabling native capacity\n");
+                                capacity = bdops->set_capacity(disk, ~0ULL);
+                                disk->flags |= GENHD_FL_NATIVE_CAPACITY;
+                                if (capacity > get_capacity(disk)) {
+                                        set_capacity(disk, capacity);
+                                        check_disk_size_change(disk, bdev);
+                                        bdev->bd_invalidated = 0;
+                                }
+                                goto try_scan;
+                        } else {
+                                /*
+                                 * we can not ignore partitions of broken tables
+                                 * created by for example camera firmware, but
+                                 * we limit them to the end of the disk to avoid
+                                 * creating invalid block devices
+                                 */
+                                printk(KERN_CONT "limited to end of disk\n");
+                                size = get_capacity(disk) - from;
+                        }
                 }
                 part = add_partition(disk, p, from, size,
                                      state->parts[p].flags);