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rfkill: add __must_check annotations

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rfkill is not a small, mere detail in wireless support.  Once it starts
supporting rfkill and users start counting on that support, a wireless
device is at risk of operating in dangerous conditions should rfkill
support fail to properly activate.

Therefore, add the required __must_check annotations on some key functions
of the rfkill API, for which the wireless drivers absolutely MUST handle
the failure mode safely in order to avoid a potentially dangerous situation
where the wireless transmitter is left enabled when the user don't want it
to.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Cc: Matthew Garrett <mjg@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Henrique de Moraes Holschuh 2008-08-02 15:10:59 -03:00 • committed by John W. Linville
parent 9961920199
commit 77fba13ccc
2 changed files with 6 additions and 4 deletions
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5
include/linux/rfkill.h
View file

@ -110,9 +110,10 @@ struct rfkill {
};
#define to_rfkill(d) container_of(d, struct rfkill, dev)
struct rfkill *rfkill_allocate(struct device *parent, enum rfkill_type type);
struct rfkill * __must_check rfkill_allocate(struct device *parent,
enum rfkill_type type);
void rfkill_free(struct rfkill *rfkill);
int rfkill_register(struct rfkill *rfkill);
int __must_check rfkill_register(struct rfkill *rfkill);
void rfkill_unregister(struct rfkill *rfkill);
int rfkill_force_state(struct rfkill *rfkill, enum rfkill_state state);