devres: Improve devm_kasprintf()/kvasprintf() support

- 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

View File

@ -293,12 +293,14 @@ MDIO
MEM
devm_free_pages()
devm_get_free_pages()
devm_kasprintf()
devm_kcalloc()
devm_kfree()
devm_kmalloc()
devm_kmalloc_array()
devm_kmemdup()
devm_kstrdup()
devm_kvasprintf()
devm_kzalloc()
PCI

View File

@ -817,13 +817,13 @@ char *devm_kstrdup(struct device *dev, const char *s, gfp_t gfp)
EXPORT_SYMBOL_GPL(devm_kstrdup);
/**
* devm_kvasprintf - Allocate resource managed space
* for the formatted string.
* devm_kvasprintf - Allocate resource managed space and format a string
* into that.
* @dev: Device to allocate memory for
* @gfp: the GFP mask used in the devm_kmalloc() call when
* allocating memory
* @fmt: the formatted string to duplicate
* @ap: the list of tokens to be placed in the formatted string
* @fmt: The printf()-style format string
* @ap: Arguments for the format string
* RETURNS:
* Pointer to allocated string on success, NULL on failure.
*/
@ -849,12 +849,13 @@ char *devm_kvasprintf(struct device *dev, gfp_t gfp, const char *fmt,
EXPORT_SYMBOL(devm_kvasprintf);
/**
* devm_kasprintf - Allocate resource managed space
* and copy an existing formatted string into that
* devm_kasprintf - Allocate resource managed space and format a string
* into that.
* @dev: Device to allocate memory for
* @gfp: the GFP mask used in the devm_kmalloc() call when
* allocating memory
* @fmt: the string to duplicate
* @fmt: The printf()-style format string
* @...: Arguments for the format string
* RETURNS:
* Pointer to allocated string on success, NULL on failure.
*/

View File

@ -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);