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extcon: Add devm_extcon_dev_allocate/free to manage the resource of extcon device

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This patch add device managed devm_extcon_dev_{allocate,free} to automatically
free the memory of extcon_dev structure without handling free operation.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Chanwoo Choi
2014-04-24 20:12:15 +09:00
parent a9af65223b
commit 739ba1bfdb
2 changed files with 69 additions and 12 deletions
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11
include/linux/extcon.h
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@@ -196,6 +196,9 @@ extern struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name);
*/
extern struct extcon_dev *extcon_dev_allocate(const char **cables);
extern void extcon_dev_free(struct extcon_dev *edev);
extern struct extcon_dev *devm_extcon_dev_allocate(struct device *dev,
const char **cables);
extern void devm_extcon_dev_free(struct device *dev, struct extcon_dev *edev);
/*
* get/set/update_state access the 32b encoded state value, which represents
@@ -280,6 +283,14 @@ static inline struct extcon_dev *extcon_dev_allocate(const char **cables)
static inline void extcon_dev_free(struct extcon_dev *edev) { }
static inline struct extcon_dev *devm_extcon_dev_allocate(struct device *dev,
const char **cables)
{
return ERR_PTR(-ENOSYS);
}
static inline void devm_extcon_dev_free(struct extcon_dev *edev) { }
static inline u32 extcon_get_state(struct extcon_dev *edev)
{
return 0;