V4L/DVB: ds3000: fix divide-by-zero error in ds3000_read_snr()

Commit Message

Nicolas Noirbent March 22, 2010, 5:54 p.m. UTC

None

Patch

diff --git a/drivers/media/dvb/frontends/ds3000.c b/drivers/media/dvb/frontends/ds3000.c
index cff3535..78001e8 100644
--- a/drivers/media/dvb/frontends/ds3000.c
+++ b/drivers/media/dvb/frontends/ds3000.c
@@ -719,7 +719,7 @@  static int ds3000_read_snr(struct dvb_frontend *fe, u16 *snr)
 				(ds3000_readreg(state, 0x8d) << 4);
 		dvbs2_signal_reading = ds3000_readreg(state, 0x8e);
 		tmp = dvbs2_signal_reading * dvbs2_signal_reading >> 1;
-		if (dvbs2_signal_reading == 0) {
+		if (tmp == 0) {
 			*snr = 0x0000;
 			return 0;
 		}