nbd: Fix debugfs_create_dir error checking
authorIvan Orlov <ivan.orlov0322@gmail.com>
Fri, 12 May 2023 13:05:32 +0000 (17:05 +0400)
committerJens Axboe <axboe@kernel.dk>
Fri, 12 May 2023 14:56:33 +0000 (08:56 -0600)
commit4913cfcf014c95f0437db2df1734472fd3e15098
treec6c14764b251dffaa9c3b4e43418ed057b730beb
parentac9a78681b921877518763ba0e89202254349d1b
nbd: Fix debugfs_create_dir error checking

The debugfs_create_dir function returns ERR_PTR in case of error, and the
only correct way to check if an error occurred is 'IS_ERR' inline function.
This patch will replace the null-comparison with IS_ERR.

Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com>
Link: https://lore.kernel.org/r/20230512130533.98709-1-ivan.orlov0322@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drivers/block/nbd.c