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-rw-r--r--drivers/char/watchdog/ibmasr.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/char/watchdog/ibmasr.c b/drivers/char/watchdog/ibmasr.c
index a32c073d29bc..4f90015be7dd 100644
--- a/drivers/char/watchdog/ibmasr.c
+++ b/drivers/char/watchdog/ibmasr.c
@@ -267,7 +267,10 @@ static int asr_ioctl(struct inode *inode, struct file *file,
asr_toggle();
return 0;
-
+ /*
+ * The hardware has a fixed timeout value, so WDIOC_SETTIMEOUT
+ * is a noop and WDIOC_GETTIMEOUT always returns 256.
+ */
case WDIOC_SETTIMEOUT:
if (get_user(heartbeat, p))
return -EFAULT;