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| author | Damien Le Moal <[email protected]> | 2022-03-01 11:30:08 +0000 |
|---|---|---|
| committer | Martin K. Petersen <[email protected]> | 2022-03-09 03:30:34 +0000 |
| commit | e9c478014b602fda2a99a6370d9eb2e5d7355246 (patch) | |
| tree | cbe92a777ba1a423f965aa05780daa492e14d5af /drivers/scsi/scsi_debug.c | |
| parent | scsi: ufs: Fix runtime PM messages never-ending cycle (diff) | |
| download | kernel-e9c478014b602fda2a99a6370d9eb2e5d7355246.tar.gz kernel-e9c478014b602fda2a99a6370d9eb2e5d7355246.zip | |
scsi: scsi_debug: Silence unexpected unlock warnings
The return statement inside the sdeb_read_lock(), sdeb_read_unlock(),
sdeb_write_lock() and sdeb_write_unlock() confuse sparse, leading to many
warnings about unexpected unlocks in the resp_xxx() functions.
Modify the lock/unlock functions using the __acquire() and __release()
inline annotations for the sdebug_no_rwlock == true case to avoid these
warnings.
Link: https://lore.kernel.org/r/[email protected]
Acked-by: Douglas Gilbert <[email protected]>
Signed-off-by: Damien Le Moal <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
Diffstat (limited to 'drivers/scsi/scsi_debug.c')
| -rw-r--r-- | drivers/scsi/scsi_debug.c | 68 |
1 files changed, 44 insertions, 24 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 0d25b30922ef..f4e97f2224b2 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -3167,45 +3167,65 @@ static int prot_verify_read(struct scsi_cmnd *scp, sector_t start_sec, static inline void sdeb_read_lock(struct sdeb_store_info *sip) { - if (sdebug_no_rwlock) - return; - if (sip) - read_lock(&sip->macc_lck); - else - read_lock(&sdeb_fake_rw_lck); + if (sdebug_no_rwlock) { + if (sip) + __acquire(&sip->macc_lck); + else + __acquire(&sdeb_fake_rw_lck); + } else { + if (sip) + read_lock(&sip->macc_lck); + else + read_lock(&sdeb_fake_rw_lck); + } } static inline void sdeb_read_unlock(struct sdeb_store_info *sip) { - if (sdebug_no_rwlock) - return; - if (sip) - read_unlock(&sip->macc_lck); - else - read_unlock(&sdeb_fake_rw_lck); + if (sdebug_no_rwlock) { + if (sip) + __release(&sip->macc_lck); + else + __release(&sdeb_fake_rw_lck); + } else { + if (sip) + read_unlock(&sip->macc_lck); + else + read_unlock(&sdeb_fake_rw_lck); + } } static inline void sdeb_write_lock(struct sdeb_store_info *sip) { - if (sdebug_no_rwlock) - return; - if (sip) - write_lock(&sip->macc_lck); - else - write_lock(&sdeb_fake_rw_lck); + if (sdebug_no_rwlock) { + if (sip) + __acquire(&sip->macc_lck); + else + __acquire(&sdeb_fake_rw_lck); + } else { + if (sip) + write_lock(&sip->macc_lck); + else + write_lock(&sdeb_fake_rw_lck); + } } static inline void sdeb_write_unlock(struct sdeb_store_info *sip) { - if (sdebug_no_rwlock) - return; - if (sip) - write_unlock(&sip->macc_lck); - else - write_unlock(&sdeb_fake_rw_lck); + if (sdebug_no_rwlock) { + if (sip) + __release(&sip->macc_lck); + else + __release(&sdeb_fake_rw_lck); + } else { + if (sip) + write_unlock(&sip->macc_lck); + else + write_unlock(&sdeb_fake_rw_lck); + } } static int resp_read_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |