From: David Jeffery Date: Fri, 28 Oct 2016 16:27:26 +0000 (-0400) Subject: scsi: vmw_pvscsi: return SUCCESS for successful command aborts X-Git-Tag: v4.9-rc5~8^2^2~6 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=aac173e9618faadf8f92af6cc05e64f7acc64d79;p=karo-tx-linux.git 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 Reviewed-by: Laurence Oberman Reviewed-by: Ewan D. Milne Acked-by: Jim Gill Signed-off-by: Martin K. Petersen --- 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. diff --git a/drivers/scsi/vmw_pvscsi.h b/drivers/scsi/vmw_pvscsi.h index c097d2ccbde3..d41292ef85f2 100644 --- a/drivers/scsi/vmw_pvscsi.h +++ b/drivers/scsi/vmw_pvscsi.h @@ -26,7 +26,7 @@ #include -#define PVSCSI_DRIVER_VERSION_STRING "1.0.6.0-k" +#define PVSCSI_DRIVER_VERSION_STRING "1.0.7.0-k" #define PVSCSI_MAX_NUM_SG_ENTRIES_PER_SEGMENT 128