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[media] usb: check media device errors

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There are now two new warnings:

drivers/media/usb/dvb-usb-v2/dvb_usb_core.c: In function 'dvb_usbv2_media_device_register':
drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:433:2: warning: ignoring return value of '__media_device_register', declared with attribute warn_unused_result [-Wunused-result]
  media_device_register(adap->dvb_adap.mdev);
  ^
drivers/media/usb/dvb-usb/dvb-usb-dvb.c: In function 'dvb_usb_media_device_register':
drivers/media/usb/dvb-usb/dvb-usb-dvb.c:128:2: warning: ignoring return value of '__media_device_register', declared with attribute warn_unused_result [-Wunused-result]
  media_device_register(adap->dvb_adap.mdev);
  ^

Those are because the drivers are not properly checking if the
media device init and register were succeeded.

Fix it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2015-12-28 09:55:49 -02:00
commit 9f80679511
4 changed files with 54 additions and 20 deletions
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