[PATCH 02/16] hpsa: add readl after writel in interrupt mask settingcode

[Stephen M. Cameron]

From: Stephen M. Cameron <scameron@xxxxxxxxxxxxxxxxxx>

This is to ensure the board interrupts are really off when
these functions return.

Signed-off-by: Stephen M. Cameron <scameron@xxxxxxxxxxxxxxxxxx>
---
 drivers/scsi/hpsa.h |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h
index 98c97ca..7eec397 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);
 	}
 }
 

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