devres: Improve devm_kasprintf()/kvasprintf() support
- Add devm_kasprintf()/kvasprintf(), introduced by commit 75f2a4ea ("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: NGeert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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