[SCSI] megaraid_sas: Clear state change interrupts

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

diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 52f6a15..ec2e097 100644 (file)
--- 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;