From: Sumit.Saxena@avagotech.com Date: Mon, 5 Jan 2015 14:36:13 +0000 (+0530) Subject: megaraid_sas: disable interrupt_mask before enabling hardware interrupts X-Git-Tag: v3.16.35~2813 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1c905be1d0c61a6628951fcb377bc250728c4662;p=thirdparty%2Fkernel%2Fstable.git megaraid_sas: disable interrupt_mask before enabling hardware interrupts commit c2ced1719a1b903350955a511e1666e6d05a7f5b upstream. Update driver "mask_interrupts" before enable/disable hardware interrupt in order to avoid missing interrupts because of "mask_interrupts" still set to 1 and hardware interrupts are enabled. Signed-off-by: Sumit Saxena Signed-off-by: Chaitra Basappa Reviewed-by: Martin K. Petersen Signed-off-by: Christoph Hellwig Signed-off-by: Luis Henriques --- diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index 22600419ae9ff..9872ccb28f1f2 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -100,6 +100,8 @@ megasas_enable_intr_fusion(struct megasas_instance *instance) { struct megasas_register_set __iomem *regs; regs = instance->reg_set; + + instance->mask_interrupts = 0; /* For Thunderbolt/Invader also clear intr on enable */ writel(~0, ®s->outbound_intr_status); readl(®s->outbound_intr_status); @@ -108,7 +110,6 @@ megasas_enable_intr_fusion(struct megasas_instance *instance) /* Dummy readl to force pci flush */ readl(®s->outbound_intr_mask); - instance->mask_interrupts = 0; } /**