diff options
Diffstat (limited to 'block/genhd.c')
| -rw-r--r-- | block/genhd.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/block/genhd.c b/block/genhd.c index fda9c7a63c2..b922d4801c8 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -653,15 +653,21 @@ void genhd_media_change_notify(struct gendisk *disk) EXPORT_SYMBOL_GPL(genhd_media_change_notify); #endif /* 0 */ -dev_t blk_lookup_devt(const char *name) +dev_t blk_lookup_devt(const char *name, int part) { struct device *dev; dev_t devt = MKDEV(0, 0); mutex_lock(&block_class_lock); list_for_each_entry(dev, &block_class.devices, node) { + if (dev->type != &disk_type) + continue; if (strcmp(dev->bus_id, name) == 0) { - devt = dev->devt; + struct gendisk *disk = dev_to_disk(dev); + + if (part < disk->minors) + devt = MKDEV(MAJOR(dev->devt), + MINOR(dev->devt) + part); break; } } @@ -669,7 +675,6 @@ dev_t blk_lookup_devt(const char *name) return devt; } - EXPORT_SYMBOL(blk_lookup_devt); struct gendisk *alloc_disk(int minors) |