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SubjectRe: [PATCH] rc-core: don't return from store_protocols without releasing device mutex
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On Sat, Dec 8, 2012 at 7:50 AM, Sasha Levin <sasha.levin@oracle.com> wrote:
> Commit c003ab1b ("[media] rc-core: add separate defines for protocol bitmaps
> and numbers") has introduced a bug which allows store_protocols() to return
> without releasing the device mutex it's holding.
>
> Doing that would cause infinite hangs waiting on device mutex next time
> around.
>
> Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
> ---
> drivers/media/rc/rc-main.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
> index 601d1ac1..0510f4d 100644
> --- a/drivers/media/rc/rc-main.c
> +++ b/drivers/media/rc/rc-main.c
> @@ -890,7 +890,8 @@ static ssize_t store_protocols(struct device *device,
>
> if (i == ARRAY_SIZE(proto_names)) {
> IR_dprintk(1, "Unknown protocol: '%s'\n", tmp);
> - return -EINVAL;
> + ret = -EINVAL;
> + goto out;
> }
>
> count++;
> --
> 1.8.0
>
> --
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