[PATCH 03/11] macintosh/via-pmu: Don't clear shift register interrupt flag twice
Finn Thain
fthain at telegraphics.com.au
Sat Jun 2 13:27:51 AEST 2018
Clearing the interrupt flag twice in succession creates a theoretical
race condition. Fix this.
Tested-by: Stan Johnson <userm57 at yahoo.com>
Signed-off-by: Finn Thain <fthain at telegraphics.com.au>
---
drivers/macintosh/via-pmu.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 9c94f99e80da..087c3aa5233a 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -1458,7 +1458,6 @@ pmu_sr_intr(void)
if (in_8(&via[B]) & TREQ) {
printk(KERN_ERR "PMU: spurious SR intr (%x)\n", in_8(&via[B]));
- out_8(&via[IFR], SR_INT);
return NULL;
}
/* The ack may not yet be low when we get the interrupt */
--
2.16.1
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