V4L/DVB: lgdt3305: enable FE_HAS_SIGNAL hack for the lgdt3304 in QAM mode

The signal bit is unreliable on the DT3304 in QAM mode, so
set FE_HAS_SIGNAL based on 'cr_lock'

Signed-off-by: Michael Krufky <mkrufky@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/lgdt3305.c b/drivers/media/dvb/frontends/lgdt3305.c
index 63997273d0e0..3272881cb112 100644
--- a/drivers/media/dvb/frontends/lgdt3305.c
+++ b/drivers/media/dvb/frontends/lgdt3305.c
@@ -955,6 +955,10 @@ static int lgdt3305_read_status(struct dvb_frontend *fe, fe_status_t *status)
         switch (state->current_modulation) {
         case QAM_256:
         case QAM_64:
+                /* signal bit is unreliable on the DT3304 in QAM mode */
+                if (((LGDT3304 == state->cfg->demod_chip)) && (cr_lock))
+                        *status |= FE_HAS_SIGNAL;
+
                 ret = lgdt3305_read_fec_lock_status(state, &fec_lock);
                 if (lg_fail(ret))
                         goto fail;