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Subject[PATCH 02/16] hpsa: add readl after writel in interrupt mask setting code
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Date
From: Stephen M. Cameron <scameron@beardog.cce.hp.com>

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

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
---
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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