[media] stv090x: Fix losing lock in dual DVB-S2 mode

Do not clear registers ACLC/BCLC in DVB-S2 mode for Cut <= 20.
Otherwise, the demod could lose the lock periodically.
Verified with cineS2 and Duoflex.

Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
index eccad06..e3442a1 100644 (file)
--- a/drivers/media/dvb/frontends/stv090x.c
+++ b/drivers/media/dvb/frontends/stv090x.c
@@ -2894,10 +2894,12 @@ static int stv090x_optimize_track(struct stv090x_state *state)
                STV090x_SETFIELD_Px(reg, DVBS2_ENABLE_FIELD, 1);
                if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0)
                        goto err;
-               if (STV090x_WRITE_DEMOD(state, ACLC, 0) < 0)
-                       goto err;
-               if (STV090x_WRITE_DEMOD(state, BCLC, 0) < 0)
-                       goto err;
+               if (state->internal->dev_ver >= 0x30) {
+                       if (STV090x_WRITE_DEMOD(state, ACLC, 0) < 0)
+                               goto err;
+                       if (STV090x_WRITE_DEMOD(state, BCLC, 0) < 0)
+                               goto err;
+               }
                if (state->frame_len == STV090x_LONG_FRAME) {
                        reg = STV090x_READ_DEMOD(state, DMDMODCOD);
                        modcod = STV090x_GETFIELD_Px(reg, DEMOD_MODCOD_FIELD);