• K
    Driver core: change add_uevent_var to use a struct · 7eff2e7a
    Kay Sievers 提交于
    This changes the uevent buffer functions to use a struct instead of a
    long list of parameters. It does no longer require the caller to do the
    proper buffer termination and size accounting, which is currently wrong
    in some places. It fixes a known bug where parts of the uevent
    environment are overwritten because of wrong index calculations.
    
    Many thanks to Mathieu Desnoyers for finding bugs and improving the
    error handling.
    Signed-off-by: NKay Sievers <kay.sievers@vrfy.org>
    Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
    Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
    Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
    
    7eff2e7a
power_supply.h 1.2 KB
/*
 *  Functions private to power supply class
 *
 *  Copyright © 2007  Anton Vorontsov <cbou@mail.ru>
 *  Copyright © 2004  Szabolcs Gyurko
 *  Copyright © 2003  Ian Molton <spyro@f2s.com>
 *
 *  Modified: 2004, Oct     Szabolcs Gyurko
 *
 *  You may use this code as per GPL version 2
 */

#ifdef CONFIG_SYSFS

extern int power_supply_create_attrs(struct power_supply *psy);
extern void power_supply_remove_attrs(struct power_supply *psy);
extern int power_supply_uevent(struct device *dev, struct kobj_uevent_env *env);

#else

static inline int power_supply_create_attrs(struct power_supply *psy)
{ return 0; }
static inline void power_supply_remove_attrs(struct power_supply *psy) {}
#define power_supply_uevent NULL

#endif /* CONFIG_SYSFS */

#ifdef CONFIG_LEDS_TRIGGERS

extern void power_supply_update_leds(struct power_supply *psy);
extern int power_supply_create_triggers(struct power_supply *psy);
extern void power_supply_remove_triggers(struct power_supply *psy);

#else

static inline void power_supply_update_leds(struct power_supply *psy) {}
static inline int power_supply_create_triggers(struct power_supply *psy)
{ return 0; }
static inline void power_supply_remove_triggers(struct power_supply *psy) {}

#endif /* CONFIG_LEDS_TRIGGERS */