diff options
| author | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-04-28 22:02:19 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-04-30 17:26:22 (GMT) |
| commit | d7b76c91f471413de9ded837bddeca2164786571 (patch) | |
| tree | 3b5b526a9b33639d60c8951cc2e70a2de346189a /drivers | |
| parent | 1fa2337a315a2448c5434f41e00d56b01a22283c (diff) | |
| download | linux-d7b76c91f471413de9ded837bddeca2164786571.tar.xz | |
[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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/dvb-frontends/af9013.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/af9013.c b/drivers/media/dvb-frontends/af9013.c index 8001690..ba6c8f6 100644 --- a/drivers/media/dvb-frontends/af9013.c +++ b/drivers/media/dvb-frontends/af9013.c @@ -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)); } |