[PATCH] firewire: cdev: fix potential leak of kernel stack due to uninitialized value

[Takashi Sakamoto]

Recent change brings potential leak of value on kernel stack to userspace
due to uninitialized value.

This commit fixes the bug.

Reported-by: Dan Carpenter <dan.carpenter at oracle.com>
Fixes: baa914cd81f ("firewire: add kernel API to access CYCLE_TIME register")
Signed-off-by: Takashi Sakamoto <o-takashi at sakamocchi.jp>
---
 drivers/firewire/core-cdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index 8e9670036e5c..032ee56c34a3 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -1211,7 +1211,7 @@ static int ioctl_get_cycle_timer2(struct client *client, union ioctl_arg *arg)
 	struct fw_cdev_get_cycle_timer2 *a = &arg->get_cycle_timer2;
 	struct fw_card *card = client->device->card;
 	struct timespec64 ts = {0, 0};
-	u32 cycle_time;
+	u32 cycle_time = 0;
 	int ret = 0;
 
 	local_irq_disable();
-- 
2.34.1