mirror of https://gitee.com/openkylin/linux.git
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>
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@ -912,7 +912,11 @@ static int xc2028_set_tv_freq(struct dvb_frontend *fe,
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struct xc2028_data *priv = fe->tuner_priv;
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fe_bandwidth_t bw;
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/* FIXME: Maybe there are more 6 MHz video standards */
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/* if std is not defined, choose one */
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if (!p->std)
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p->std = V4L2_STD_MN;
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/* PAL/M, PAL/N, PAL/Nc and NTSC variants should use 6MHz firmware */
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if (p->std & V4L2_STD_MN)
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bw = BANDWIDTH_6_MHZ;
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else
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