V4L/DVB (6658): Sets a default std, if not specified

Some drivers call set_frequency before selecting the video standard. Before
this patch, an invalid standard ID could be assumed.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/video/tuner-xc2028.c b/drivers/media/video/tuner-xc2028.c
index 9118314..8fa3ab7 100644 (file)
--- a/drivers/media/video/tuner-xc2028.c
+++ b/drivers/media/video/tuner-xc2028.c
@@ -912,7 +912,11 @@ static int xc2028_set_tv_freq(struct dvb_frontend *fe,
        struct xc2028_data *priv = fe->tuner_priv;
        fe_bandwidth_t bw;
 
-       /* FIXME: Maybe there are more 6 MHz video standards */
+       /* if std is not defined, choose one */
+       if (!p->std)
+               p->std = V4L2_STD_MN;
+
+       /* PAL/M, PAL/N, PAL/Nc and NTSC variants should use 6MHz firmware */
        if (p->std & V4L2_STD_MN)
                bw = BANDWIDTH_6_MHZ;
        else