From: "Stephen M. Cameron" <scameron@beardog.cce.hp.com>
To: james.bottomley@hansenpartnership.com
Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
smcameron@yahoo.com, thenzl@redhat.com,
akpm@linux-foundation.org, mikem@beardog.cce.hp.com
Subject: [PATCH 01/16] hpsa: do readl after writel in main i/o path to ensure commands don't get lost.
Date: Tue, 03 May 2011 14:58:49 -0500 [thread overview]
Message-ID: <20110503195849.5478.13229.stgit@beardog.cce.hp.com> (raw)
In-Reply-To: <20110503195750.5478.54853.stgit@beardog.cce.hp.com>
From: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Apparently we've been doin it rong for a decade, but only lately do we
run into problems.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
---
drivers/scsi/hpsa.h | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h
index 621a153..98c97ca 100644
--- a/drivers/scsi/hpsa.h
+++ b/drivers/scsi/hpsa.h
@@ -212,6 +212,7 @@ static void SA5_submit_command(struct ctlr_info *h,
dev_dbg(&h->pdev->dev, "Sending %x, tag = %x\n", c->busaddr,
c->Header.Tag.lower);
writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
+ (void) readl(h->vaddr + SA5_REQUEST_PORT_OFFSET);
h->commands_outstanding++;
if (h->commands_outstanding > h->max_outstanding)
h->max_outstanding = h->commands_outstanding;
next prev parent reply other threads:[~2011-05-03 19:58 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-03 19:58 [PATCH 00/16] hpsa: May 3, 2011 updates Stephen M. Cameron
2011-05-03 19:58 ` Stephen M. Cameron [this message]
2011-05-04 11:15 ` [PATCH 01/16] hpsa: do readl after writel in main i/o path to ensure commands don't get lost Tomas Henzl
2011-05-04 12:52 ` scameron
2011-05-04 13:34 ` Tomas Henzl
2011-05-04 17:28 ` Valdis.Kletnieks
2011-05-04 17:37 ` Matthew Wilcox
2011-05-04 17:54 ` Valdis.Kletnieks
2011-05-05 18:35 ` Mike Miller
2011-05-23 11:37 ` Tomas Henzl
2011-05-25 15:20 ` Miller, Mike (OS Dev)
2011-05-26 12:13 ` Tomas Henzl
2011-05-26 14:53 ` Miller, Mike (OS Dev)
2011-05-03 19:58 ` [PATCH 02/16] hpsa: add readl after writel in interrupt mask setting code Stephen M. Cameron
2011-05-03 19:59 ` [PATCH 03/16] hpsa: remove unused parameter from hpsa_complete_scsi_command() Stephen M. Cameron
2011-05-03 19:59 ` [PATCH 04/16] hpsa: delete old unused padding garbage Stephen M. Cameron
2011-05-03 19:59 ` [PATCH 05/16] hpsa: do a better job of detecting controller reset failure Stephen M. Cameron
2011-05-03 19:59 ` [PATCH 06/16] hpsa: wait longer for no-op to complete after resetting controller Stephen M. Cameron
2011-05-03 19:59 ` [PATCH 07/16] hpsa: factor out cmd pool allocation functions Stephen M. Cameron
2011-05-03 19:59 ` [PATCH 08/16] hpsa: factor out irq request code Stephen M. Cameron
2011-05-03 19:59 ` [PATCH 09/16] hpsa: increase time to wait for board reset Stephen M. Cameron
2011-05-03 19:59 ` [PATCH 10/16] hpsa: clarify messages around reset behavior Stephen M. Cameron
2011-05-03 19:59 ` [PATCH 11/16] hpsa: remove atrophied hpsa_scsi_setup function Stephen M. Cameron
2011-05-03 19:59 ` [PATCH 12/16] hpsa: use new doorbell-bit-5 reset method Stephen M. Cameron
2011-05-03 19:59 ` [PATCH 13/16] hpsa: do soft reset if hard reset is broken Stephen M. Cameron
2011-05-03 19:59 ` [PATCH 14/16] hpsa: remove superfluous sleeps around reset code Stephen M. Cameron
2011-05-03 20:00 ` [PATCH 15/16] hpsa: do not attempt PCI power management reset method if we know it won't work Stephen M. Cameron
2011-05-03 20:00 ` [PATCH 16/16] hpsa: add P2000 to list of shared SAS devices Stephen M. Cameron
2011-05-17 10:12 ` James Bottomley
2011-05-17 13:26 ` scameron
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