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>
diff --git a/drivers/media/dvb/bt8xx/dst.c b/drivers/media/dvb/bt8xx/dst.c
index 1cfa5e5..b2018b5 100644
--- a/drivers/media/dvb/bt8xx/dst.c
+++ b/drivers/media/dvb/bt8xx/dst.c
@@ -1417,24 +1417,22 @@
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) */