| Message ID | 1373387330-22124-1-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 3b021ec..e34418f 100644 --- a/drivers/scsi/aacraid/src.c +++ b/drivers/scsi/aacraid/src.c @@ -93,6 +93,9 @@ static irqreturn_t aac_src_intr_message(int irq, void *dev_id) int send_it = 0; extern int aac_sync_mode; + src_writel(dev, MUnit.ODR_C, bellbits); + src_readl(dev, MUnit.ODR_C); + if (!aac_sync_mode) { src_writel(dev, MUnit.ODR_C, bellbits); src_readl(dev, MUnit.ODR_C);
This is a note to let you know that I have just added a patch titled [SCSI] aacraid: Fix for arrays are going offline in the to the linux-3.8.y-queue branch of the 3.8.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-3.8.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 3.8.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From b10e3e058cfd2711674eb8516fc8260d507393c3 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] [SCSI] 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> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- drivers/scsi/aacraid/src.c | 3 +++ 1 file changed, 3 insertions(+) -- 1.8.1.2