4.9-stable review patch. If anyone has any objections, please let me know.
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From: Mauro Carvalho Chehab mchehab@s-opensource.com
[ Upstream commit a145f64c6107d3aa5a7cec9f8977d04ac2a896c9 ]
Returning -EINVAL when an ioctl is not implemented is a very bad idea, as it is hard to distinguish from other error contitions that an ioctl could lead. Replace it by its right error code: -ENOTTY.
Signed-off-by: Mauro Carvalho Chehab mchehab@s-opensource.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/media/dvb-core/dmxdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/media/dvb-core/dmxdev.c +++ b/drivers/media/dvb-core/dmxdev.c @@ -1071,7 +1071,7 @@ static int dvb_demux_do_ioctl(struct fil break;
default: - ret = -EINVAL; + ret = -ENOTTY; break; } mutex_unlock(&dmxdev->mutex);