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| author | Stefani Seibold <stefani@seibold.net> | 2009-12-21 14:37:29 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-22 14:17:56 -0800 |
| commit | 9842c38e917636fa7dc6b88aff17a8f1fd7f0cc0 (patch) | |
| tree | 71d0b52ddc243743046bba9f774beca9febc393a /drivers/scsi | |
| parent | 7acd72eb85f1c7a15e8b5eb554994949241737f1 (diff) | |
| download | linux-9842c38e917636fa7dc6b88aff17a8f1fd7f0cc0.tar.gz linux-9842c38e917636fa7dc6b88aff17a8f1fd7f0cc0.tar.bz2 linux-9842c38e917636fa7dc6b88aff17a8f1fd7f0cc0.zip | |
kfifo: fix warn_unused_result
Fix the "ignoring return value of '...', declared with attribute
warn_unused_result" compiler warning in several users of the new kfifo
API.
It removes the __must_check attribute from kfifo_in() and
kfifo_in_locked() which must not necessary performed.
Fix the allocation bug in the nozomi driver file, by moving out the
kfifo_alloc from the interrupt handler into the probe function.
Fix the kfifo_out() and kfifo_out_locked() users to handle a unexpected
end of fifo.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/libiscsi_tcp.c | 9 | ||||
| -rw-r--r-- | drivers/scsi/libsrp.c | 7 |
2 files changed, 12 insertions, 4 deletions
diff --git a/drivers/scsi/libiscsi_tcp.c b/drivers/scsi/libiscsi_tcp.c index d51ffeca2ec9..db6856c138fc 100644 --- a/drivers/scsi/libiscsi_tcp.c +++ b/drivers/scsi/libiscsi_tcp.c @@ -990,8 +990,13 @@ static struct iscsi_r2t_info *iscsi_tcp_get_curr_r2t(struct iscsi_task *task) } if (r2t == NULL) { - kfifo_out(&tcp_task->r2tqueue, - (void *)&tcp_task->r2t, sizeof(void *)); + if (kfifo_out(&tcp_task->r2tqueue, + (void *)&tcp_task->r2t, sizeof(void *)) != + sizeof(void *)) { + WARN_ONCE(1, "unexpected fifo state"); + r2t = NULL; + } + r2t = tcp_task->r2t; } spin_unlock_bh(&session->lock); diff --git a/drivers/scsi/libsrp.c b/drivers/scsi/libsrp.c index 8424b8606efb..ab19b3b4be52 100644 --- a/drivers/scsi/libsrp.c +++ b/drivers/scsi/libsrp.c @@ -163,8 +163,11 @@ struct iu_entry *srp_iu_get(struct srp_target *target) { struct iu_entry *iue = NULL; - kfifo_out_locked(&target->iu_queue.queue, (void *) &iue, - sizeof(void *), &target->iu_queue.lock); + if (kfifo_out_locked(&target->iu_queue.queue, (void *) &iue, + sizeof(void *), &target->iu_queue.lock) != sizeof(void *)) { + WARN_ONCE(1, "unexpected fifo state"); + return NULL; + } if (!iue) return iue; iue->target = target; |