From 8cd21da71c952843f9cc215436286cf7f991cc6e Mon Sep 17 00:00:00 2001 From: "Stephen M. Cameron" Date: Tue, 3 May 2011 14:58:55 -0500 Subject: [PATCH] [SCSI] hpsa: add readl after writel in interrupt mask setting code This is to ensure the board interrupts are really off when these functions return. Signed-off-by: Stephen M. Cameron Signed-off-by: James Bottomley Signed-off-by: James Bottomley --- drivers/scsi/hpsa.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h index 98c97ca21223..7eec39716dc7 100644 --- a/drivers/scsi/hpsa.h +++ b/drivers/scsi/hpsa.h @@ -228,10 +228,12 @@ static void SA5_intr_mask(struct ctlr_info *h, unsigned long val) if (val) { /* Turn interrupts on */ h->interrupts_enabled = 1; writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); + (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); } else { /* Turn them off */ h->interrupts_enabled = 0; writel(SA5_INTR_OFF, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); + (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); } } @@ -240,10 +242,12 @@ static void SA5_performant_intr_mask(struct ctlr_info *h, unsigned long val) if (val) { /* turn on interrupts */ h->interrupts_enabled = 1; writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); + (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); } else { h->interrupts_enabled = 0; writel(SA5_PERF_INTR_OFF, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); + (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); } }