[patch 27/45] tpm: interrupt clear fix

Greg KH
2006-07-17T16:33:30Z

[-- Attachment #1: tpm-interrupt-clear-fix.patch --]
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-stable review patch. If anyone has any objections, please let us know.

------------------
From: Kylene Jo Hall <kjhall@us.ibm.com>

Under stress testing I found that the interrupt is not always cleared.
This is a bug and this patch should go into 2.6.18 and 2.6.17.x.

Signed-off-by: Kylene Hall <kjhall@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/char/tpm/tpm_tis.c | 1 +
1 file changed, 1 insertion(+)

--- linux-2.6.17.6.orig/drivers/char/tpm/tpm_tis.c
+++ linux-2.6.17.6/drivers/char/tpm/tpm_tis.c
@@ -424,6 +424,7 @@ static irqreturn_t tis_int_handler(int i
iowrite32(interrupt,
chip->vendor.iobase +
TPM_INT_STATUS(chip->vendor.locality));
+ mb();
return IRQ_HANDLED;
}

--