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From: Christoph Hellwig <hch@lst.de>
To: linux-scsi@vger.kernel.org
Subject: [PATCH 1/8] scsi: don't use scsi_next_command in scsi_reset_provider
Date: Sun,  7 Sep 2014 09:31:02 -0700	[thread overview]
Message-ID: <1410107469-896-2-git-send-email-hch@lst.de> (raw)
In-Reply-To: <1410107469-896-1-git-send-email-hch@lst.de>

scsi_reset_provider already manually runs all queues for the given host,
so it doesn't need the scsi_run_queues call from it, and it doesn't need
a reference on the device because it's synchronous.

So let's just call scsi_put_command directly and avoid the device reference
dance to simplify the code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/scsi/scsi_error.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 6b20ef3..14cece9 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -2317,15 +2317,9 @@ scsi_reset_provider(struct scsi_device *dev, int flag)
 	if (scsi_autopm_get_host(shost) < 0)
 		return FAILED;
 
-	if (!get_device(&dev->sdev_gendev)) {
-		rtn = FAILED;
-		goto out_put_autopm_host;
-	}
-
 	scmd = scsi_get_command(dev, GFP_KERNEL);
 	if (!scmd) {
 		rtn = FAILED;
-		put_device(&dev->sdev_gendev);
 		goto out_put_autopm_host;
 	}
 
@@ -2381,10 +2375,9 @@ scsi_reset_provider(struct scsi_device *dev, int flag)
 			     "waking up host to restart after TMF\n"));
 
 	wake_up(&shost->host_wait);
-
 	scsi_run_host_queues(shost);
 
-	scsi_next_command(scmd);
+	scsi_put_command(scmd);
 out_put_autopm_host:
 	scsi_autopm_put_host(shost);
 	return rtn;
-- 
1.9.1


  reply	other threads:[~2014-09-07 16:28 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-07 16:31 I/O path cleanup Christoph Hellwig
2014-09-07 16:31 ` Christoph Hellwig [this message]
2014-10-01 12:03   ` [PATCH 1/8] scsi: don't use scsi_next_command in scsi_reset_provider Bart Van Assche
2014-09-07 16:31 ` [PATCH 2/8] scsi: remove scsi_next_command Christoph Hellwig
2014-10-01 12:06   ` Bart Van Assche
2014-09-07 16:31 ` [PATCH 3/8] scsi: clean up S/G table freeing Christoph Hellwig
2014-10-01 12:22   ` Bart Van Assche
2014-10-01 21:05     ` Christoph Hellwig
2014-09-07 16:31 ` [PATCH 4/8] scsi: stop passing a gfp_mask argument down the command setup path Christoph Hellwig
2014-10-01 12:28   ` Bart Van Assche
2014-09-07 16:31 ` [PATCH 5/8] scsi: move scsi_dispatch_cmd to scsi_lib.c Christoph Hellwig
2014-10-01 12:30   ` Bart Van Assche
2014-09-07 16:31 ` [PATCH 6/8] scsi: move more requeue handling into scsi_requeue_command Christoph Hellwig
2014-10-01 12:33   ` Bart Van Assche
2014-09-07 16:31 ` [PATCH 7/8] scsi: split error handling slow path out of scsi_io_completion Christoph Hellwig
2014-10-01 12:46   ` Bart Van Assche
2014-09-07 16:31 ` [PATCH 8/8] scsi: merge scsi_finish_command and scsi_io_completion Christoph Hellwig
2014-10-01 12:55   ` Bart Van Assche
2014-09-08  7:22 ` I/O path cleanup Bart Van Assche
2014-09-08 15:13   ` Christoph Hellwig
2014-09-30 13:31     ` Bart Van Assche
2014-09-30 13:43       ` Christoph Hellwig

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