V4L/DVB (4028): Change dvb_frontend_ops to be a real field instead of a pointer field inside dvb_frontend

The dvb_frontend_ops is a pointer inside dvb_frontend. That's why every demod-driver
is having a field of dvb_frontend_ops in its private-state-struct and
using the reference for filling the pointer-field in dvb_frontend.
- It saves at least two lines of code per demod-driver,
- reduces object size (one less dereference per frontend_ops-access),
- be coherent with dvb_tuner_ops,
- makes it a little bit easier for newbies to understand how it works and
- avoids stupid mistakes because you would have to copy the dvb_frontend_ops
  always, before you could assign the static pointer directly, which was
  dangerous.

Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 4 insertions, 5 deletions

diff --git a/drivers/media/dvb/frontends/dib3000mb.c b/drivers/media/dvb/frontends/dib3000mb.c
index f2f8071ad1b0..7c6dc7e30900 100644
--- a/drivers/media/dvb/frontends/dib3000mb.c
+++ b/drivers/media/dvb/frontends/dib3000mb.c
@@ -60,9 +60,9 @@ static int dib3000mb_set_frontend(struct dvb_frontend* fe,
         fe_code_rate_t fe_cr = FEC_NONE;
         int search_state, seq;
 
-        if (tuner && fe->ops->tuner_ops.set_params) {
-                fe->ops->tuner_ops.set_params(fe, fep);
-                if (fe->ops->i2c_gate_ctrl) fe->ops->i2c_gate_ctrl(fe, 0);
+        if (tuner && fe->ops.tuner_ops.set_params) {
+                fe->ops.tuner_ops.set_params(fe, fep);
+                if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
 
                 deb_setf("bandwidth: ");
                 switch (ofdm->bandwidth) {
@@ -705,7 +705,6 @@ struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config,
         /* setup the state */
         state->i2c = i2c;
         memcpy(&state->config,config,sizeof(struct dib3000_config));
-        memcpy(&state->ops, &dib3000mb_ops, sizeof(struct dvb_frontend_ops));
 
         /* check for the correct demod */
         if (rd(DIB3000_REG_MANUFACTOR_ID) != DIB3000_I2C_ID_DIBCOM)
@@ -715,7 +714,7 @@ struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config,
                 goto error;
 
         /* create dvb_frontend */
-        state->frontend.ops = &state->ops;
+        memcpy(&state->frontend.ops, &dib3000mb_ops, sizeof(struct dvb_frontend_ops));
         state->frontend.demodulator_priv = state;
 
         /* set the xfer operations */