From add434e551f07554f093193d16a850bdf45ec236 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Wed, 20 Jan 2021 09:58:38 +0100 Subject: [PATCH] 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 Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/dvb-usb-v2/rtl28xxu.c | 35 ++++++++++++--------------------- 1 file changed, 13 insertions(+), 22 deletions(-) diff --git a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c index 3952cc5..97ed17a 100644 --- a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c +++ b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c @@ -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) -- 2.7.4