diff options
| author | Stephen M. Cameron <scameron@beardog.cce.hp.com> | 2011-07-21 13:16:05 -0500 |
|---|---|---|
| committer | Jonas ABERG <jonas.aberg@stericsson.com> | 2011-10-28 11:09:55 +0200 |
| commit | e3e84d3366897b153acddb100a21efd5030a61df (patch) | |
| tree | ca4027e997e0c4de1bf5cf41729af504c55c71f5 | |
| parent | e392b7ba0399612eca85f6134f9dff1752421726 (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>
Change-Id: Ief78ccf0d95588a52e13839c9d02d4c56f18bc2a
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35624
Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com>
Reviewed-by: QABUILD
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
| -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 6d8dcd4dd06..7f53ceaa723 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; |