[media] media: correct return value in dvb_demux_poll
authorChangbing Xiong <cb.xiong@samsung.com>
Thu, 21 Aug 2014 02:05:07 +0000 (23:05 -0300)
committerMauro Carvalho Chehab <m.chehab@samsung.com>
Tue, 2 Sep 2014 14:49:00 +0000 (11:49 -0300)
Data type of return value is unsigned int, but in function of dvb_demux_poll,
when the pointer of dmxdevfilter equals NULL, it will return -EINVAL, which
is invalid.

Signed-off-by: Changbing Xiong <cb.xiong@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
drivers/media/dvb-core/dmxdev.c

index c0363f1b6c90e06c34409766e4a69c56fb98164f..7a5c07003c415299956d2e3e3fb95cadc8448f22 100644 (file)
@@ -1088,7 +1088,7 @@ static unsigned int dvb_demux_poll(struct file *file, poll_table *wait)
        unsigned int mask = 0;
 
        if (!dmxdevfilter)
-               return -EINVAL;
+               return POLLERR;
 
        poll_wait(file, &dmxdevfilter->buffer.queue, wait);