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media: usb/dvb-usb-v2/rtl28xxu.c: clean up code to fix smatch warning 

Fixes this smatch warning:

drivers/media/usb/dvb-usb-v2/rtl28xxu.c:1040 rtl2832u_frontend_attach() warn: missing error code 'ret'

It is actually a bogus warning since in this particular case ret isn't
meant to be set. But by reworking the code a bit the code is actually
a lot more understandable and it fixes this warning.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Hans Verkuil 2021-01-20 09:58:38 +01:00 committed by Mauro Carvalho Chehab
parent dd3bca72c4
commit add434e551
1 changed files with 13 additions and 22 deletions
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35
drivers/media/usb/dvb-usb-v2/rtl28xxu.c
View File

@ -944,12 +944,6 @@ static int rtl2832u_frontend_attach(struct dvb_usb_adapter *adap)
if (dev->slave_demod) {
struct i2c_board_info info = {};
/*
* We continue on reduced mode, without DVB-T2/C, using master
* demod, when slave demod fails.
*/
ret = 0;
/* attach slave demodulator */
if (dev->slave_demod == SLAVE_DEMOD_MN88472) {
struct mn88472_config mn88472_config = {};
@ -964,14 +958,11 @@ static int rtl2832u_frontend_attach(struct dvb_usb_adapter *adap)
info.platform_data = &mn88472_config;
request_module(info.type);
client = i2c_new_client_device(&d->i2c_adap, &info);
if (!i2c_client_has_driver(client)) {
dev->slave_demod = SLAVE_DEMOD_NONE;
if (!i2c_client_has_driver(client))
goto err_slave_demod_failed;
}
if (!try_module_get(client->dev.driver->owner)) {
i2c_unregister_device(client);
dev->slave_demod = SLAVE_DEMOD_NONE;
goto err_slave_demod_failed;
}
@ -986,14 +977,11 @@ static int rtl2832u_frontend_attach(struct dvb_usb_adapter *adap)
info.platform_data = &mn88473_config;
request_module(info.type);
client = i2c_new_client_device(&d->i2c_adap, &info);
if (!i2c_client_has_driver(client)) {
dev->slave_demod = SLAVE_DEMOD_NONE;
if (!i2c_client_has_driver(client))
goto err_slave_demod_failed;
}
if (!try_module_get(client->dev.driver->owner)) {
i2c_unregister_device(client);
dev->slave_demod = SLAVE_DEMOD_NONE;
goto err_slave_demod_failed;
}
@ -1009,10 +997,8 @@ static int rtl2832u_frontend_attach(struct dvb_usb_adapter *adap)
adap->fe[1] = dvb_attach(cxd2841er_attach_t_c,
&cxd2837er_config,
&d->i2c_adap);
if (!adap->fe[1]) {
dev->slave_demod = SLAVE_DEMOD_NONE;
if (!adap->fe[1])
goto err_slave_demod_failed;
}
adap->fe[1]->id = 1;
dev->i2c_client_slave_demod = NULL;
} else {
@ -1029,14 +1015,11 @@ static int rtl2832u_frontend_attach(struct dvb_usb_adapter *adap)
info.platform_data = &si2168_config;
request_module(info.type);
client = i2c_new_client_device(&d->i2c_adap, &info);
if (!i2c_client_has_driver(client)) {
dev->slave_demod = SLAVE_DEMOD_NONE;
if (!i2c_client_has_driver(client))
goto err_slave_demod_failed;
}
if (!try_module_get(client->dev.driver->owner)) {
i2c_unregister_device(client);
dev->slave_demod = SLAVE_DEMOD_NONE;
goto err_slave_demod_failed;
}
@ -1047,10 +1030,18 @@ static int rtl2832u_frontend_attach(struct dvb_usb_adapter *adap)
}
}
return 0;
err_slave_demod_failed:
err:
dev_dbg(&d->intf->dev, "failed=%d\n", ret);
return ret;
err_slave_demod_failed:
/*
* We continue on reduced mode, without DVB-T2/C, using master
* demod, when slave demod fails.
*/
dev->slave_demod = SLAVE_DEMOD_NONE;
return 0;
}
static int rtl28xxu_frontend_attach(struct dvb_usb_adapter *adap)