From: Kylene Jo Hall <kjhall@us.ibm.com>
Date: Fri, 14 Jul 2006 07:24:30 +0000 (-0700)
Subject: [PATCH] tpm: interrupt clear fix
X-Git-Tag: v2.6.18-rc2~30
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cab091eaa4952777d3183b6d7ce203a213cddc12;p=linux-2.6

[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>
---

diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 3232b19325..29dac1e453 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;
 }