linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* [PATCH] scsi/NCR5380: Reduce NCR5380_maybe_release_dma_irq() call sites
@ 2020-11-20  4:39 Finn Thain
  2020-11-20  7:33 ` Michael Schmitz
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Finn Thain @ 2020-11-20  4:39 UTC (permalink / raw)
  To: Michael Schmitz, James E.J. Bottomley, Martin K. Petersen
  Cc: linux-scsi, linux-kernel

Refactor to avoid needless calls to NCR5380_maybe_release_dma_irq().
This makes the machine code smaller and the source more readable.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
---
 drivers/scsi/NCR5380.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index ea4b5749e7da..d597d7493a62 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -725,7 +725,6 @@ static void NCR5380_main(struct work_struct *work)
 
 			if (!NCR5380_select(instance, cmd)) {
 				dsprintk(NDEBUG_MAIN, instance, "main: select complete\n");
-				maybe_release_dma_irq(instance);
 			} else {
 				dsprintk(NDEBUG_MAIN | NDEBUG_QUEUES, instance,
 				         "main: select failed, returning %p to queue\n", cmd);
@@ -737,8 +736,10 @@ static void NCR5380_main(struct work_struct *work)
 			NCR5380_information_transfer(instance);
 			done = 0;
 		}
-		if (!hostdata->connected)
+		if (!hostdata->connected) {
 			NCR5380_write(SELECT_ENABLE_REG, hostdata->id_mask);
+			maybe_release_dma_irq(instance);
+		}
 		spin_unlock_irq(&hostdata->lock);
 		if (!done)
 			cond_resched();
@@ -1844,7 +1845,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
 					 */
 					NCR5380_write(TARGET_COMMAND_REG, 0);
 
-					maybe_release_dma_irq(instance);
 					return;
 				case MESSAGE_REJECT:
 					/* Accept message by clearing ACK */
@@ -1976,7 +1976,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
 					hostdata->busy[scmd_id(cmd)] &= ~(1 << cmd->device->lun);
 					cmd->result = DID_ERROR << 16;
 					complete_cmd(instance, cmd);
-					maybe_release_dma_irq(instance);
 					return;
 				}
 				msgout = NOP;
@@ -2312,7 +2311,6 @@ static int NCR5380_abort(struct scsi_cmnd *cmd)
 	}
 
 	queue_work(hostdata->work_q, &hostdata->main_task);
-	maybe_release_dma_irq(instance);
 	spin_unlock_irqrestore(&hostdata->lock, flags);
 
 	return result;
@@ -2368,7 +2366,6 @@ static void bus_reset_cleanup(struct Scsi_Host *instance)
 	hostdata->dma_len = 0;
 
 	queue_work(hostdata->work_q, &hostdata->main_task);
-	maybe_release_dma_irq(instance);
 }
 
 /**
-- 
2.26.2


^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2020-12-01  5:05 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-11-20  4:39 [PATCH] scsi/NCR5380: Reduce NCR5380_maybe_release_dma_irq() call sites Finn Thain
2020-11-20  7:33 ` Michael Schmitz
2020-11-24  3:14 ` Martin K. Petersen
2020-12-01  5:04 ` Martin K. Petersen

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).