[SCSI] megaraid_sas: Clear state change interrupts

Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 52f6a158477a..ec2e097f7737 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -101,6 +101,10 @@ extern u32 megasas_dbg_lvl;
 void
 megasas_enable_intr_fusion(struct megasas_register_set __iomem *regs)
 {
+        /* For Thunderbolt/Invader also clear intr on enable */
+        writel(~0, &regs->outbound_intr_status);
+        readl(&regs->outbound_intr_status);
+
         writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 
         /* Dummy readl to force pci flush */
@@ -1806,10 +1810,13 @@ irqreturn_t megasas_isr_fusion(int irq, void *devp)
         }
 
         /* If we are resetting, bail */
-        if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
+        if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
+                instance->instancet->clear_intr(instance->reg_set);
                 return IRQ_HANDLED;
+        }
 
         if (!complete_cmd_fusion(instance)) {
+                instance->instancet->clear_intr(instance->reg_set);
                 /* If we didn't complete any commands, check for FW fault */
                 fw_state = instance->instancet->read_fw_status_reg(
                         instance->reg_set) & MFI_STATE_MASK;