diff options
| author | Stephen M. Cameron <scameron@beardog.cce.hp.com> | 2011-07-21 13:16:05 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-04 21:58:36 -0700 |
| commit | fbb04a1c17686592b5e74e45e210f20c40b68d08 (patch) | |
| tree | ed23ccee420c389294cb5c337f740bb62bd0a563 /drivers/scsi | |
| parent | 43f7c7261fc45a4c09fbd56c0a76dcdf55d8e8f3 (diff) | |
hpsa: do not attempt to read from a write-only register
commit fec62c368b9c8b05d5124ca6c3b8336b537f26f3 upstream.
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>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/scsi')
| -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; |