[PATCH] hpet: fix uninitialized variable in hpet_register()

Clear the ht_opaque field in the hpet_register() function before searching for
a free timer to prevent the function from incorrectly assuming that the search
succeeded afterwards.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Cc: Bob Picco <bob.picco@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index bc5ee99b9c23..73e6614cdf84 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -587,6 +587,8 @@ int hpet_register(struct hpet_task *tp, int periodic)
                 return -EINVAL;
         }
 
+        tp->ht_opaque = NULL;
+
         spin_lock_irq(&hpet_task_lock);
         spin_lock(&hpet_lock);