linux-kernel - [PATCH] HID: magicmouse: Fix an error handling path in magicmouse

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Message-Id: <b0777c29fb4c59f27a726f62680b4c7f04c5c76e.1640725695.git.christophe.jaillet@wanadoo.fr>
Date:   Tue, 28 Dec 2021 22:09:17 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     jikos@...nel.org, benjamin.tissoires@...hat.com,
        jose.exposito89@...il.com
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] HID: magicmouse: Fix an error handling path in magicmouse_probe()

If the timer introduced by the commit below is started, then it must be
deleted in the error handling of the probe. Otherwise it would trigger
once the driver is no more.

Fixes: 0b91b4e4dae6 ("HID: magicmouse: Report battery level over USB")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/hid/hid-magicmouse.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c
index eba1e8087bfd..b8b08f0a8c54 100644
--- a/drivers/hid/hid-magicmouse.c
+++ b/drivers/hid/hid-magicmouse.c
@@ -873,6 +873,7 @@ static int magicmouse_probe(struct hid_device *hdev,
 
 	return 0;
 err_stop_hw:
+	del_timer_sync(&msc->battery_timer);
 	hid_hw_stop(hdev);
 	return ret;
 }
-- 
2.32.0