+ scsi-megaraid_sas-add-the-dumy-readl-to-force-pci-flush.patch added to -mm tree

[akpm@linux-foundation.org]

The patch titled
     scsi: megaraid_sas: add the dumy readl to force PCI flush
has been added to the -mm tree.  Its filename is
     scsi-megaraid_sas-add-the-dumy-readl-to-force-pci-flush.patch

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------------------------------------------------------
Subject: scsi: megaraid_sas: add the dumy readl to force PCI flush
From: "Yang, Bo" <Bo.Yang@lsi.com>

MegaRAID SAS Driver get unexpected Interrupt.  Add the dumy readl to force
PCI flush will fix this issue.

Signed-off-by Bo Yang<bo.yang@lsi.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/scsi/megaraid/megaraid_sas.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff -puN drivers/scsi/megaraid/megaraid_sas.c~scsi-megaraid_sas-add-the-dumy-readl-to-force-pci-flush drivers/scsi/megaraid/megaraid_sas.c
--- a/drivers/scsi/megaraid/megaraid_sas.c~scsi-megaraid_sas-add-the-dumy-readl-to-force-pci-flush
+++ a/drivers/scsi/megaraid/megaraid_sas.c
@@ -198,6 +198,9 @@ megasas_clear_intr_xscale(struct megasas
 	 */
 	writel(status, &regs->outbound_intr_status);
 
+	/* Dummy readl to force pci flush */
+	readl(&regs->outbound_intr_status);
+
 	return 0;
 }
 
@@ -293,6 +296,9 @@ megasas_clear_intr_ppc(struct megasas_re
 	 */
 	writel(status, &regs->outbound_doorbell_clear);
 
+	/* Dummy readl to force pci flush */
+	readl(&regs->outbound_doorbell_clear);
+
 	return 0;
 }
 /**
_

Patches currently in -mm which might be from Bo.Yang@lsi.com are

scsi-megaraid_sas-add-the-dumy-readl-to-force-pci-flush.patch
scsi-megaraid_sas-add-the-shutdown-dcmd-cmd-to-driver-shutdown-routine.patch
scsi-megaraid_sas-add-the-new-controllers-support.patch
scsi-megaraid_sas-add-the-new-controllers-support-checkpatch-fixes.patch
scsi-megaraid_sas-version-and-documentation-update.patch