diff options
Diffstat (limited to 'queue/cciss-do-not-attempt-to-read-from-a-write-only-regis.patch')
| -rw-r--r-- | queue/cciss-do-not-attempt-to-read-from-a-write-only-regis.patch | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/queue/cciss-do-not-attempt-to-read-from-a-write-only-regis.patch b/queue/cciss-do-not-attempt-to-read-from-a-write-only-regis.patch new file mode 100644 index 0000000..b6e5b50 --- /dev/null +++ b/queue/cciss-do-not-attempt-to-read-from-a-write-only-regis.patch @@ -0,0 +1,34 @@ +From 00b698c79c8f3f667fef845e0271a1777da15b7a Mon Sep 17 00:00:00 2001 +From: "Stephen M. Cameron" <scameron@beardog.cce.hp.com> +Date: Sat, 9 Jul 2011 09:04:12 +0200 +Subject: [PATCH] cciss: do not attempt to read from a write-only register + +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 + |