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devres: Improve devm_kasprintf()/kvasprintf() support

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- Add devm_kasprintf()/kvasprintf(), introduced by commit
    75f2a4ead5 ("devres: Add
    devm_kasprintf and devm_kvasprintf API"), to
    Documentation/driver-model/devres.txt,
  - Improve kernel doc: the string is not an existing formatted string,
    but is formatted into the newly-allocated buffer,
  - Add a __printf() annotation to devm_kasprintf(), so the compiler
    will verify the format string argument types.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Geert Uytterhoeven 2014-08-20 15:26:35 +02:00 • committed by Greg Kroah-Hartman
parent 54270354b5
commit bef59c5024
3 changed files with 12 additions and 9 deletions
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4
include/linux/device.h
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@ -607,8 +607,8 @@ extern int devres_release_group(struct device *dev, void *id);
extern void *devm_kmalloc(struct device *dev, size_t size, gfp_t gfp);
extern char *devm_kvasprintf(struct device *dev, gfp_t gfp, const char *fmt,
va_list ap);
extern char *devm_kasprintf(struct device *dev, gfp_t gfp,
const char *fmt, ...);
extern __printf(3, 4)
char *devm_kasprintf(struct device *dev, gfp_t gfp, const char *fmt, ...);
static inline void *devm_kzalloc(struct device *dev, size_t size, gfp_t gfp)
{
return devm_kmalloc(dev, size, gfp | __GFP_ZERO);