The DRX-K doesn't change the delivery system at set_properties,
but do it at frontend init. This causes problems on programs like
w_scan that, by default, opens both frontends.

Use adap->mfe_shared in order to prevent this, and be sure that Annex A
or C are properly selected.

Signed-off-by: Mauro Carvalho Chehab <mche...@redhat.com>
---

v2: Use mfe_shared

 drivers/media/dvb/frontends/drxk_hard.c |   16 ++++++++++------
 drivers/media/dvb/frontends/drxk_hard.h |    2 ++
 drivers/media/video/em28xx/em28xx-dvb.c |    4 ++++
 3 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/drivers/media/dvb/frontends/drxk_hard.c 
b/drivers/media/dvb/frontends/drxk_hard.c
index 95cbc98..388b815 100644
--- a/drivers/media/dvb/frontends/drxk_hard.c
+++ b/drivers/media/dvb/frontends/drxk_hard.c
@@ -1847,6 +1847,7 @@ static int SetOperationMode(struct drxk_state *state,
                */
        switch (oMode) {
        case OM_DVBT:
+               dprintk(1, ": DVB-T\n");
                state->m_OperationMode = oMode;
                status = SetDVBTStandard(state, oMode);
                if (status < 0)
@@ -1854,6 +1855,8 @@ static int SetOperationMode(struct drxk_state *state,
                break;
        case OM_QAM_ITU_A:      /* fallthrough */
        case OM_QAM_ITU_C:
+               dprintk(1, ": DVB-C Annex %c\n",
+                       (state->m_OperationMode == OM_QAM_ITU_A) ? 'A' : 'C');
                state->m_OperationMode = oMode;
                status = SetQAMStandard(state, oMode);
                if (status < 0)
@@ -6183,7 +6186,10 @@ static int drxk_c_init(struct dvb_frontend *fe)
        dprintk(1, "\n");
        if (mutex_trylock(&state->ctlock) == 0)
                return -EBUSY;
-       SetOperationMode(state, OM_QAM_ITU_A);
+       if (state->m_itut_annex_c)
+               SetOperationMode(state, OM_QAM_ITU_C);
+       else
+               SetOperationMode(state, OM_QAM_ITU_A);
        return 0;
 }
 
@@ -6219,13 +6225,11 @@ static int drxk_set_parameters(struct dvb_frontend *fe,
                return -EINVAL;
        }
 
-       if (state->m_OperationMode == OM_QAM_ITU_A ||
-           state->m_OperationMode == OM_QAM_ITU_C) {
+       if (fe->ops.info.type == FE_QAM) {
                if (fe->dtv_property_cache.rolloff == ROLLOFF_13)
-                       state->m_OperationMode = OM_QAM_ITU_C;
+                       state->m_itut_annex_c = true;
                else
-                       state->m_OperationMode = OM_QAM_ITU_A;
-       }
+                       state->m_itut_annex_c = false;
 
        if (fe->ops.i2c_gate_ctrl)
                fe->ops.i2c_gate_ctrl(fe, 1);
diff --git a/drivers/media/dvb/frontends/drxk_hard.h 
b/drivers/media/dvb/frontends/drxk_hard.h
index a05c32e..85a423f 100644
--- a/drivers/media/dvb/frontends/drxk_hard.h
+++ b/drivers/media/dvb/frontends/drxk_hard.h
@@ -263,6 +263,8 @@ struct drxk_state {
        u8     m_TSDataStrength;
        u8     m_TSClockkStrength;
 
+       bool   m_itut_annex_c;      /* If true, uses ITU-T DVB-C Annex C, 
instead of Annex A */
+
        enum DRXMPEGStrWidth_t  m_widthSTR;    /**< MPEG start width */
        u32    m_mpegTsStaticBitrate;          /**< Maximum bitrate in b/s in 
case
                                                    static clockrate is 
selected */
diff --git a/drivers/media/video/em28xx/em28xx-dvb.c 
b/drivers/media/video/em28xx/em28xx-dvb.c
index 7f0592c..3868c1e 100644
--- a/drivers/media/video/em28xx/em28xx-dvb.c
+++ b/drivers/media/video/em28xx/em28xx-dvb.c
@@ -899,6 +899,8 @@ static int em28xx_dvb_init(struct em28xx *dev)
                       &dvb->fe[0]->ops.tuner_ops,
                       sizeof(dvb->fe[0]->ops.tuner_ops));
 
+               mfe_shared = 1;
+
                break;
        }
        case EM2884_BOARD_TERRATEC_H5:
@@ -935,6 +937,8 @@ static int em28xx_dvb_init(struct em28xx *dev)
                       &dvb->fe[0]->ops.tuner_ops,
                       sizeof(dvb->fe[0]->ops.tuner_ops));
 
+               mfe_shared = 1;
+
                break;
        case EM28174_BOARD_PCTV_460E:
                /* attach demod */
-- 
1.7.8

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