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Date: Fri, 8 May 2020 14:32:41 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Alexey Khoroshilov <khoroshilov@...ras.ru>,
Mauro Carvalho Chehab <mchehab@....samsung.com>
Subject: [PATCH 4.4 170/312] [media] lirc_imon: do not leave imon_probe() with mutex held
From: Alexey Khoroshilov <khoroshilov@...ras.ru>
commit b833d0df943d70682e288c38c96b8e7bfff4023a upstream.
Commit af8a819a2513 ("[media] lirc_imon: simplify error handling code")
lost mutex_unlock(&context->ctx_lock), so imon_probe() exits with
the context->ctx_lock mutex acquired.
The patch adds mutex_unlock(&context->ctx_lock) back.
Found by Linux Driver Verification project (linuxtesting.org).
Fixes: af8a819a2513 ("[media] lirc_imon: simplify error handling code")
Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@....samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/staging/media/lirc/lirc_imon.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/staging/media/lirc/lirc_imon.c
+++ b/drivers/staging/media/lirc/lirc_imon.c
@@ -885,12 +885,14 @@ static int imon_probe(struct usb_interfa
vendor, product, ifnum, usbdev->bus->busnum, usbdev->devnum);
/* Everything went fine. Just unlock and return retval (with is 0) */
+ mutex_unlock(&context->ctx_lock);
goto driver_unlock;
unregister_lirc:
lirc_unregister_driver(driver->minor);
free_tx_urb:
+ mutex_unlock(&context->ctx_lock);
usb_free_urb(tx_urb);
free_rx_urb:
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