Instead of providing separate callbacks to read the several FE
stats properties, the better seems to use just one method that will:
- Read lock status;
- Read signal strength;
- if locked, get TMCC data;
- if locked, get DVB statistics.
As the DVB frontend thread will call this read_status callback
on every 3 seconds, and userspace can even call it earlier,
all stats data and layers layout will be updated together if
available, with is a good thing.
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
As reported by Feng's kbuild test:
From: kbuild test robot <fengguang.wu@intel.com>
Subject: drivers/media/dvb-frontends/mb86a20s.c:706 mb86a20s_attach() error: potential null dereference 'state'. (kzalloc returns null)
Date: Wed, 23 Jan 2013 19:30:43 +0800
commit: f66d81b54d [media] mb86a20s: convert it to use dev_info/dev_err/dev_dbg
drivers/media/dvb-frontends/mb86a20s.c:706 mb86a20s_attach() error: potential null dereference 'state'. (kzalloc returns null)
drivers/media/dvb-frontends/mb86a20s.c:706 mb86a20s_attach() error: we previously assumed 'state' could be null (see line 705)
As, at mb86a20s_attach(), we have an i2c pointer, use it for all printk
messages there, instead of state->i2c.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Instead of having its own set of macros, use the Kernel default
ones for debug, error and info.
While here, do some cleanup on the debug printk's.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Reorder functions to have everything related to stats/status read
close. That will make the file more organized as other stats
routines will be added.
No functional changes.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Split the logic that reads the status from the DVB callback. That
helps to properly return an error code, if status read fails.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The read/write errors are not handled well on get_frontend. Fix it,
by letting the frontend cached values to represent the DVB properties
that were successfully retrieved.
While here, use "c" for dtv_frontend_properties cache, instead of
"p", as this is more common.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Raise the DVB frontends one level up, as the intention is to remove
the drivers/media/dvb directory.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
