| Message ID | 1373281147-22811-1-git-send-email-luis.henriques@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c index 7628206..4de2612 100644 --- a/drivers/scsi/aacraid/src.c +++ b/drivers/scsi/aacraid/src.c @@ -101,6 +101,9 @@ static irqreturn_t aac_src_intr_message(int irq, void *dev_id) struct list_head *entry; int send_it = 0; + src_writel(dev, MUnit.ODR_C, bellbits); + src_readl(dev, MUnit.ODR_C); + if (dev->sync_fib) { our_interrupt = 1; if (dev->sync_fib->callback)
This is a note to let you know that I have just added a patch titled aacraid: Fix for arrays are going offline in the system. to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.5.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From 33081211eaf57e9d043c33df10af9bd6de9b309f Mon Sep 17 00:00:00 2001 From: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com> Date: Tue, 18 Jun 2013 17:02:07 +0530 Subject: [PATCH] aacraid: Fix for arrays are going offline in the system. System hangs commit c5bebd829dd95602c15f8da8cc50fa938b5e0254 upstream. One of the customer had reported that the set of raid logical arrays will become unavailable (I/O offline) after a long hours of IO stress test. The OS wouldn`t be accessible afterwards and require a hard reset. This driver patch has a fix for race condition between the doorbell and the circular buffer. The driver is modified to do an extra read after clearing the doorbell in case there had been a completion posted during the small timing window. With this fix, we ran IO stress for ~13 days. There were no IO failures. Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com> [ luis: backported to 3.5: adjusted context ] Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- drivers/scsi/aacraid/src.c | 3 +++ 1 file changed, 3 insertions(+) -- 1.8.1.2