From cab091eaa4952777d3183b6d7ce203a213cddc12 Mon Sep 17 00:00:00 2001
From: Kylene Jo Hall <kjhall@us.ibm.com>
Date: Fri, 14 Jul 2006 00:24:30 -0700
Subject: [PATCH] tpm: interrupt clear fix

Under stress testing I found that the interrupt is not always cleared.

Signed-off-by: Kylene Hall <kjhall@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 drivers/char/tpm/tpm_tis.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'drivers/char/tpm/tpm_tis.c')

diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 3232b1932597..29dac1e4537c 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -424,6 +424,7 @@ static irqreturn_t tis_int_handler(int irq, void *dev_id, struct pt_regs *regs)
 	iowrite32(interrupt,
 		  chip->vendor.iobase +
 		  TPM_INT_STATUS(chip->vendor.locality));
+	ioread32(chip->vendor.iobase + TPM_INT_STATUS(chip->vendor.locality));
 	return IRQ_HANDLED;
 }
 
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