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authorManu Abraham <abraham.manu@gmail.com>2009-06-18 04:50:53 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-06-23 03:29:57 -0300
commiteebf8d86acf0db974dfaad8e8285f4e12ca488e2 (patch)
tree90ce27459cef311f680b18f7d8237d375c115c9e /drivers/media
parent0a5ded56fd3f4096681f8e6a249fb058485f4e46 (diff)
V4L/DVB (12131): BUGFIX: An incorrect Carrier Recovery Loop optimization table was being
loaded for a given chip version. This would cause the optimization in tuning not to be applied and thus a failed expectation, in tuning speed increment. The patch swaps the tables in use. It also fixes a possible one in a million condition where state->dev_ver implies an older Cut (Cut < 2.0, eventhough the driver doesn't attach to any Cut older than 2.0) or even negative (due to a bad I2C bus master driver) for the card combination. Thanks to Mauro Carvalho Chehab <mchehab@infradead.org> for pointing out the issue at large. Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/dvb/frontends/stv090x.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
index 4e89bb02bff..488bdfb34fb 100644
--- a/drivers/media/dvb/frontends/stv090x.c
+++ b/drivers/media/dvb/frontends/stv090x.c
@@ -2694,10 +2694,13 @@ static u8 stv090x_optimize_carloop_short(struct stv090x_state *state)
break;
}
- if (state->dev_ver >= 0x30)
- short_crl = stv090x_s2_short_crl_cut20;
- else if (state->dev_ver >= 0x20)
+ if (state->dev_ver >= 0x30) {
+ /* Cut 3.0 and up */
short_crl = stv090x_s2_short_crl_cut30;
+ } else {
+ /* Cut 2.0 and up: we don't support cuts older than 2.0 */
+ short_crl = stv090x_s2_short_crl_cut20;
+ }
if (state->srate <= 3000000)
aclc = short_crl[index].crl_2;