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megaraid_sas: disable interrupt_mask before enabling hardware interrupts

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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.

Cc: <stable@vger.kernel.org>
Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Chaitra Basappa <chaitra.basappa@avagotech.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Sumit.Saxena@avagotech.com 2015-01-05 20:06:13 +05:30 committed by Christoph Hellwig
parent ab2f0608e1
commit c2ced1719a
1 changed files with 2 additions and 1 deletions
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3
drivers/scsi/megaraid/megaraid_sas_fusion.c
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@ -102,6 +102,8 @@ 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, &regs->outbound_intr_status);
readl(&regs->outbound_intr_status);
@ -110,7 +112,6 @@ megasas_enable_intr_fusion(struct megasas_instance *instance)
/* Dummy readl to force pci flush */
readl(&regs->outbound_intr_mask);
instance->mask_interrupts = 0;
}
/**