[media] af9013: Don't accept invalid bandwidth



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>

parent 1fa2337a

drivers/media/dvb-frontends/af9013.c

+4 −0

Original line number	Original line	Diff line number	Diff line
	@@ -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,		ret = af9013_wr_regs(state, 0xae00, coeff_lut[i].val,
	sizeof(coeff_lut[i].val));		sizeof(coeff_lut[i].val));
	}		}