Messages in this thread | | | Date | Fri, 22 Jul 2011 15:39:19 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] cciss: do not attempt to read from a write-only register |
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On Thu, 21 Jul 2011 13:16:01 -0500 "Stephen M. Cameron" <scameron@beardog.cce.hp.com> wrote:
> From: Stephen M. Cameron <scameron@beardog.cce.hp.com> > > Most smartarrays will tolerate it, but some 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>
No Cc: <stable@kernel.org>?
> drivers/block/cciss.h | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h > index 16b4d58..c049548 100644 > --- a/drivers/block/cciss.h > +++ b/drivers/block/cciss.h > @@ -223,7 +223,7 @@ static void SA5_submit_command( ctlr_info_t *h, CommandList_struct *c) > h->ctlr, c->busaddr); > #endif /* CCISS_DEBUG */ > writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); > - readl(h->vaddr + SA5_REQUEST_PORT_OFFSET); > + readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); > h->commands_outstanding++; > if ( h->commands_outstanding > h->max_outstanding) > h->max_outstanding = h->commands_outstanding;
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