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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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15
drivers/base/devres.c
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@@ -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.
*/