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Message-Id: <1459543981-24475-1-git-send-email-khoroshilov@ispras.ru> Date: Fri, 1 Apr 2016 23:53:01 +0300 From: Alexey Khoroshilov <khoroshilov@...ras.ru> To: Tomas Winkler <tomas.winkler@...el.com> Cc: Alexey Khoroshilov <khoroshilov@...ras.ru>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, linux-kernel@...r.kernel.org, ldv-project@...uxtesting.org Subject: [PATCH] mei: do not pin module if cldrv->probe() failed If cldrv->probe() failed in mei_cl_device_probe(), the mei module is left pinned. The patch moves __module_get(THIS_MODULE) after cldrv->probe(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru> --- drivers/misc/mei/bus.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c index 5d5996e39a67..6c32a47c8f30 100644 --- a/drivers/misc/mei/bus.c +++ b/drivers/misc/mei/bus.c @@ -580,6 +580,7 @@ static int mei_cl_device_probe(struct device *dev) struct mei_cl_device *cldev; struct mei_cl_driver *cldrv; const struct mei_cl_device_id *id; + int ret; cldev = to_mei_cl_device(dev); cldrv = to_mei_cl_driver(dev->driver); @@ -594,9 +595,12 @@ static int mei_cl_device_probe(struct device *dev) if (!id) return -ENODEV; - __module_get(THIS_MODULE); + ret = cldrv->probe(cldev, id); + if (ret) + return ret; - return cldrv->probe(cldev, id); + __module_get(THIS_MODULE); + return 0; } /** -- 1.9.1
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