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ublk: fix command op code check 

In case of CONFIG_BLKDEV_UBLK_LEGACY_OPCODES, type of cmd opcode could
be 0 or 'u'; and type can only be 'u' if CONFIG_BLKDEV_UBLK_LEGACY_OPCODES
isn't set.

So fix the wrong check.

Fixes: 2d786e66c9 ("block: ublk: switch to ioctl command encoding")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20230505153142.1258336-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ming Lei 2023-05-05 23:31:42 +08:00 committed by Jens Axboe
parent 5e6e08087a
commit e485bd9e2c
1 changed files with 1 additions and 1 deletions
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2
drivers/block/ublk_drv.c
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@ -1281,7 +1281,7 @@ static inline int ublk_check_cmd_op(u32 cmd_op)
{
u32 ioc_type = _IOC_TYPE(cmd_op);
if (IS_ENABLED(CONFIG_BLKDEV_UBLK_LEGACY_OPCODES) && ioc_type != 'u')
if (!IS_ENABLED(CONFIG_BLKDEV_UBLK_LEGACY_OPCODES) && ioc_type != 'u')
return -EOPNOTSUPP;
if (ioc_type != 'u' && ioc_type != 0)