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| author | Olli Salonen <olli.salonen@iki.fi> | 2016-03-16 12:04:51 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2016-06-07 22:10:04 +0200 |
| commit | 212fa081262e17affb1aa3ed8fd7a5b2fffbfc00 (patch) | |
| tree | 0f7a3982cd256193c9a7ec42a448a9b6e842a386 /drivers | |
| parent | [media] fix semicolon.cocci warnings (diff) | |
| download | linux-212fa081262e17affb1aa3ed8fd7a5b2fffbfc00.tar.xz linux-212fa081262e17affb1aa3ed8fd7a5b2fffbfc00.zip | |
[media] ds3000: return error if invalid symbol rate is set
Return -EINVAL if ds3000_set_frontend is called with invalid parameters.
v1 of the patch series got incorrect subject lines.
Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/dvb-frontends/ds3000.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/ds3000.c b/drivers/media/dvb-frontends/ds3000.c index addffc33993a..447b518e287a 100644 --- a/drivers/media/dvb-frontends/ds3000.c +++ b/drivers/media/dvb-frontends/ds3000.c @@ -959,6 +959,15 @@ static int ds3000_set_frontend(struct dvb_frontend *fe) /* enable ac coupling */ ds3000_writereg(state, 0x25, 0x8a); + if ((c->symbol_rate < ds3000_ops.info.symbol_rate_min) || + (c->symbol_rate > ds3000_ops.info.symbol_rate_max)) { + dprintk("%s() symbol_rate %u out of range (%u ... %u)\n", + __func__, c->symbol_rate, + ds3000_ops.info.symbol_rate_min, + ds3000_ops.info.symbol_rate_max); + return -EINVAL; + } + /* enhance symbol rate performance */ if ((c->symbol_rate / 1000) <= 5000) { value = 29777 / (c->symbol_rate / 1000) + 1; |