[PATCH v2 13/13] block: add __must_check for *add_disk*() callers

Luis Chamberlain
2021-11-03T12:22:32Z

Now that we have done a spring cleaning on all drivers and added
error checking / handling, let's keep it that way and ensure
no new drivers fail to stick with it.

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
block/genhd.c | 6 +++---
include/linux/genhd.h | 6 +++---
2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/block/genhd.c b/block/genhd.c
index 7b56767e9e32..be4775c13760 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -397,8 +397,8 @@ static void disk_scan_partitions(struct gendisk *disk)
* This function registers the partitioning information in @disk
* with the kernel.
*/
-int device_add_disk(struct device *parent, struct gendisk *disk,
- const struct attribute_group **groups)
+int __must_check device_add_disk(struct device *parent, struct gendisk *disk,
+ const struct attribute_group **groups)

{
struct device *ddev = disk_to_dev(disk);
@@ -543,7 +543,7 @@ int device_add_disk(struct device *parent, struct gendisk *disk,
out_free_ext_minor:
if (disk->major == BLOCK_EXT_MAJOR)
blk_free_ext_minor(disk->first_minor);
- return WARN_ON_ONCE(ret); /* keep until all callers handle errors */
+ return ret;
}
EXPORT_SYMBOL(device_add_disk);

diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 016623245725..526ec4aaf85c 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -205,9 +205,9 @@ static inline dev_t disk_devt(struct gendisk *disk)
void disk_uevent(struct gendisk *disk, enum kobject_action action);

/* block/genhd.c */
-int device_add_disk(struct device *parent, struct gendisk *disk,
- const struct attribute_group **groups);
-static inline int add_disk(struct gendisk *disk)
+int __must_check device_add_disk(struct device *parent, struct gendisk *disk,
+ const struct attribute_group **groups);
+static inline int __must_check add_disk(struct gendisk *disk)
{
return device_add_disk(NULL, disk, NULL);
}
--
2.33.0