Messages in this thread Patch in this message | | | From | Paul Gortmaker <> | Subject | [34-longterm 133/179] cciss: do not attempt to read from a write-only register | Date | Mon, 14 May 2012 22:13:49 -0400 |
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From: "Stephen M. Cameron" <scameron@beardog.cce.hp.com>
------------------- This is a commit scheduled for the next v2.6.34 longterm release. http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git If you see a problem with using this for longterm, please comment. -------------------
commit 07d0c38e7d84f911c72058a124c7f17b3c779a65 upstream.
Most smartarrays will tolerate it, but some new ones don't.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Note: this is a regression caused by commit 1ddd5049 Signed-off-by: Jens Axboe <jaxboe@fusionio.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> --- drivers/block/cciss.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h index 37a2d4f..759cbd9 100644 --- a/drivers/block/cciss.h +++ b/drivers/block/cciss.h @@ -173,7 +173,7 @@ static void SA5_submit_command( ctlr_info_t *h, CommandList_struct *c) printk("Sending %x - down to controller\n", 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; -- 1.7.9.6
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