[PATCHv2 2/2] ds3000: return error if invalid symbol rate is set

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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@xxxxxx>
---
 drivers/media/dvb-frontends/ds3000.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/media/dvb-frontends/ds3000.c b/drivers/media/dvb-frontends/ds3000.c
index addffc3..447b518 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;
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Input]     [Video for Linux]     [Gstreamer Embedded]     [Mplayer Users]     [Linux USB Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [Yosemite Backpacking]
  Powered by Linux