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| author | David Jeffery <djeffery@redhat.com> | 2016-10-28 12:27:26 -0400 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-11-01 13:31:23 -0400 |
| commit | aac173e9618faadf8f92af6cc05e64f7acc64d79 (patch) | |
| tree | 2b1145a0b142843a566dac4221bf9e385896bc44 /drivers/scsi/vmw_pvscsi.c | |
| parent | 6d3a56ed098566bc83d6c2afa74b4199c12ea074 (diff) | |
| download | linux-aac173e9618faadf8f92af6cc05e64f7acc64d79.tar.gz linux-aac173e9618faadf8f92af6cc05e64f7acc64d79.tar.bz2 linux-aac173e9618faadf8f92af6cc05e64f7acc64d79.zip | |
scsi: vmw_pvscsi: return SUCCESS for successful command aborts
The vmw_pvscsi driver reports most successful aborts as FAILED to the
scsi error handler. This is do to a misunderstanding of how
completion_done() works and its interaction with a successful wait using
wait_for_completion_timeout(). The vmw_pvscsi driver is expecting
completion_done() to always return true if complete() has been called on
the completion structure. But completion_done() returns true after
complete() has been called only if no function like
wait_for_completion_timeout() has seen the completion and cleared it as
part of successfully waiting for the completion.
Instead of using completion_done(), vmw_pvscsi should just use the
return value from wait_for_completion_timeout() to know if the wait
timed out or not.
[mkp: bumped driver version per request]
Signed-off-by: David Jeffery <djeffery@redhat.com>
Reviewed-by: Laurence Oberman <loberman@redhat.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Acked-by: Jim Gill <jgill@vmware.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/vmw_pvscsi.c')
| -rw-r--r-- | drivers/scsi/vmw_pvscsi.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/scsi/vmw_pvscsi.c b/drivers/scsi/vmw_pvscsi.c index 4a0d3cdc607c..15ca09cd16f3 100644 --- a/drivers/scsi/vmw_pvscsi.c +++ b/drivers/scsi/vmw_pvscsi.c @@ -793,6 +793,7 @@ static int pvscsi_abort(struct scsi_cmnd *cmd) unsigned long flags; int result = SUCCESS; DECLARE_COMPLETION_ONSTACK(abort_cmp); + int done; scmd_printk(KERN_DEBUG, cmd, "task abort on host %u, %p\n", adapter->host->host_no, cmd); @@ -824,10 +825,10 @@ static int pvscsi_abort(struct scsi_cmnd *cmd) pvscsi_abort_cmd(adapter, ctx); spin_unlock_irqrestore(&adapter->hw_lock, flags); /* Wait for 2 secs for the completion. */ - wait_for_completion_timeout(&abort_cmp, msecs_to_jiffies(2000)); + done = wait_for_completion_timeout(&abort_cmp, msecs_to_jiffies(2000)); spin_lock_irqsave(&adapter->hw_lock, flags); - if (!completion_done(&abort_cmp)) { + if (!done) { /* * Failed to abort the command, unmark the fact that it * was requested to be aborted. |