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, 6 deletions

diff --git a/drivers/media/dvb/bt8xx/dst.c b/drivers/media/dvb/bt8xx/dst.c
index 1cfa5e5035d8..b2018b5a405b 100644
--- a/drivers/media/dvb/bt8xx/dst.c
+++ b/drivers/media/dvb/bt8xx/dst.c
@@ -1417,24 +1417,22 @@ struct dst_state *dst_attach(struct dst_state *state, struct dvb_adapter *dvb_ad
                 return NULL;
         }
         /* determine settings based on type */
+        /* create dvb_frontend */
         switch (state->dst_type) {
         case DST_TYPE_IS_TERR:
-                memcpy(&state->ops, &dst_dvbt_ops, sizeof(struct dvb_frontend_ops));
+                memcpy(&state->frontend.ops, &dst_dvbt_ops, sizeof(struct dvb_frontend_ops));
                 break;
         case DST_TYPE_IS_CABLE:
-                memcpy(&state->ops, &dst_dvbc_ops, sizeof(struct dvb_frontend_ops));
+                memcpy(&state->frontend.ops, &dst_dvbc_ops, sizeof(struct dvb_frontend_ops));
                 break;
         case DST_TYPE_IS_SAT:
-                memcpy(&state->ops, &dst_dvbs_ops, sizeof(struct dvb_frontend_ops));
+                memcpy(&state->frontend.ops, &dst_dvbs_ops, sizeof(struct dvb_frontend_ops));
                 break;
         default:
                 dprintk(verbose, DST_ERROR, 1, "unknown DST type. please report to the LinuxTV.org DVB mailinglist.");
                 kfree(state);
                 return NULL;
         }
-
-        /* create dvb_frontend */
-        state->frontend.ops = &state->ops;
         state->frontend.demodulator_priv = state;
 
         return state;                           /*      Manu (DST is a card not a frontend)     */