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| author | Stephen M. Cameron <scameron@beardog.cce.hp.com> | 2011-07-21 13:16:05 -0500 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-07-27 15:18:26 +0400 |
| commit | fec62c368b9c8b05d5124ca6c3b8336b537f26f3 (patch) | |
| tree | 8fe8d2969939613c533c74582fc47c34c39cd811 /drivers/scsi/hpsa.h | |
| parent | 8ead0bd175848729fc25415b840068e40b2998ad (diff) | |
| download | blackbird-obmc-linux-fec62c368b9c8b05d5124ca6c3b8336b537f26f3.tar.gz blackbird-obmc-linux-fec62c368b9c8b05d5124ca6c3b8336b537f26f3.zip | |
[SCSI] hpsa: do not attempt to read from a write-only register
Most smartarrays tolerate it, but a few new ones don't.
Without this change some newer Smart Arrays will lock up
and i/o will grind to a halt.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Cc: stable@kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/hpsa.h')
| -rw-r--r-- | drivers/scsi/hpsa.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h index 6d8dcd4dd06b..7f53ceaa7239 100644 --- a/drivers/scsi/hpsa.h +++ b/drivers/scsi/hpsa.h @@ -214,7 +214,7 @@ 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); + (void) readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); h->commands_outstanding++; if (h->commands_outstanding > h->max_outstanding) h->max_outstanding = h->commands_outstanding; |
