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[media] af9013: Don't accept invalid bandwidth

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If userspace sends an invalid bandwidth, it should either return
EINVAL or switch to auto mode.

This driver will go past an array and program the hardware on a
wrong way if this happens.

Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2015-04-28 19:02:19 -03:00
parent 1fa2337a31
commit d7b76c91f4
1 changed files with 4 additions and 0 deletions
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4
drivers/media/dvb-frontends/af9013.c
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@ -605,6 +605,10 @@ static int af9013_set_frontend(struct dvb_frontend *fe)
}
}
/* Return an error if can't find bandwidth or the right clock */
if (i == ARRAY_SIZE(coeff_lut))
return -EINVAL;
ret = af9013_wr_regs(state, 0xae00, coeff_lut[i].val,
sizeof(coeff_lut[i].val));
}