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From: Hannes Reinecke <hare@suse.de>
To: James Bottomley <jbottomley@parallels.com>
Cc: linux-scsi@vger.kernel.org, Joern Engel <joern@logfs.org>,
	Ewan Milne <emilne@redhat.com>,
	James Smart <james.smart@emulex.com>,
	Ren Mingxin <renmx@cn.fujitsu.com>,
	Roland Dreier <roland@purestorage.com>,
	Bryn Reeves <bmr@redhat.com>,
	Christoph Hellwig <hch@infradead.org>,
	Hannes Reinecke <hare@suse.de>
Subject: [PATCH 6/7] scsi: remove check for 'resetting'
Date: Mon, 10 Jun 2013 13:11:52 +0200	[thread overview]
Message-ID: <1370862713-41323-7-git-send-email-hare@suse.de> (raw)
In-Reply-To: <1370862713-41323-1-git-send-email-hare@suse.de>

Field is now unused, so this is dead code.

Signed-off-by: Hannes Reinecke <hare@suse.de>
---
 drivers/scsi/scsi.c | 28 ----------------------------
 1 file changed, 28 deletions(-)

diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 2c0d0ec..ebe3b0a 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -78,11 +78,6 @@ static void scsi_done(struct scsi_cmnd *cmd);
  * Definitions and constants.
  */
 
-#define MIN_RESET_DELAY (2*HZ)
-
-/* Do not call reset on error if we just did a reset within 15 sec. */
-#define MIN_RESET_PERIOD (15*HZ)
-
 /*
  * Note - the initial logging level can be set here to log events at boot time.
  * After the system is up, you may enable logging via the /proc interface.
@@ -658,7 +653,6 @@ EXPORT_SYMBOL(scsi_cmd_get_serial);
 int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
 {
 	struct Scsi_Host *host = cmd->device->host;
-	unsigned long timeout;
 	int rtn = 0;
 
 	atomic_inc(&cmd->device->iorequest_cnt);
@@ -704,28 +698,6 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
 			       (cmd->device->lun << 5 & 0xe0);
 	}
 
-	/*
-	 * We will wait MIN_RESET_DELAY clock ticks after the last reset so
-	 * we can avoid the drive not being ready.
-	 */
-	timeout = host->last_reset + MIN_RESET_DELAY;
-
-	if (host->resetting && time_before(jiffies, timeout)) {
-		int ticks_remaining = timeout - jiffies;
-		/*
-		 * NOTE: This may be executed from within an interrupt
-		 * handler!  This is bad, but for now, it'll do.  The irq
-		 * level of the interrupt handler has been masked out by the
-		 * platform dependent interrupt handling code already, so the
-		 * sti() here will not cause another call to the SCSI host's
-		 * interrupt handler (assuming there is one irq-level per
-		 * host).
-		 */
-		while (--ticks_remaining >= 0)
-			mdelay(1 + 999 / HZ);
-		host->resetting = 0;
-	}
-
 	scsi_log_send(cmd);
 
 	/*
-- 
1.7.12.4


  parent reply	other threads:[~2013-06-10 11:12 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-10 11:11 [PATCH 0/7] Limit overall SCSI EH runtime Hannes Reinecke
2013-06-10 11:11 ` [PATCH 1/7] dpt_i2o: Remove DPTI_STATE_IOCTL Hannes Reinecke
2013-06-10 11:11 ` [PATCH 2/7] dpt_i2o: return SCSI_MLQUEUE_HOST_BUSY when in reset Hannes Reinecke
2013-06-10 11:11 ` [PATCH 3/7] advansys: Remove 'last_reset' references Hannes Reinecke
2013-06-10 11:11 ` [PATCH 4/7] tmscsim: Move 'last_reset' into host structure Hannes Reinecke
2013-06-10 11:11 ` [PATCH 5/7] dc395: Move 'last_reset' into internal " Hannes Reinecke
2013-06-10 11:11 ` Hannes Reinecke [this message]
2013-06-10 11:11 ` [PATCH 7/7] scsi: Add 'eh_deadline' to limit SCSI EH runtime Hannes Reinecke
2013-06-27 14:33   ` Ewan Milne
2013-06-28  7:14     ` Hannes Reinecke
2013-06-28 12:54       ` Ewan Milne
2013-06-28  7:29   ` Bart Van Assche
2013-06-28  7:42     ` Hannes Reinecke
2013-06-27  9:23 ` [PATCH 0/7] Limit overall " Ren Mingxin
2013-07-01  6:50 [PATCHv2 " Hannes Reinecke
2013-07-01  6:50 ` [PATCH 6/7] scsi: remove check for 'resetting' Hannes Reinecke

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