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[media] dvb-usb: warn if return value for USB read/write routines is not checked

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the return values for dvb_usb_generic_rw() and dvb_usb_generic_write()
should be checked, as otherwise the drivers won't be doing the right
thing in the case of errors.

So, add __must_check to both declarations.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Mauro Carvalho Chehab 2016-10-07 11:41:13 -03:00
parent 59dde8e70c
commit 11a1e0ed79
1 changed files with 4 additions and 2 deletions
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6
drivers/media/usb/dvb-usb/dvb-usb.h
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@ -462,8 +462,10 @@ extern int dvb_usb_device_init(struct usb_interface *,
extern void dvb_usb_device_exit(struct usb_interface *);
/* the generic read/write method for device control */
extern int dvb_usb_generic_rw(struct dvb_usb_device *, u8 *, u16, u8 *, u16,int);
extern int dvb_usb_generic_write(struct dvb_usb_device *, u8 *, u16);
extern int __must_check
dvb_usb_generic_rw(struct dvb_usb_device *, u8 *, u16, u8 *, u16, int);
extern int __must_check
dvb_usb_generic_write(struct dvb_usb_device *, u8 *, u16);
/* commonly used remote control parsing */
extern int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *, u8[], u32 *, int *);