From 3046365bb470f0ec2f7cf5cb07a8ee7e4b490103 Mon Sep 17 00:00:00 2001 From: Srinivas Pandruvada Date: Tue, 29 Apr 2014 00:51:00 +0100 Subject: devres: introduce API "devm_kmemdup Introduce devm_kmemdup, which uses resource managed kmalloc. There are several request from maintainers to add this instead of using kmemdup. Signed-off-by: Srinivas Pandruvada Signed-off-by: Jonathan Cameron --- drivers/base/devres.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'drivers/base/devres.c') diff --git a/drivers/base/devres.c b/drivers/base/devres.c index db4e264eecb6..d0914cba2413 100644 --- a/drivers/base/devres.c +++ b/drivers/base/devres.c @@ -831,3 +831,24 @@ void devm_kfree(struct device *dev, void *p) WARN_ON(rc); } EXPORT_SYMBOL_GPL(devm_kfree); + +/** + * devm_kmemdup - Resource-managed kmemdup + * @dev: Device this memory belongs to + * @src: Memory region to duplicate + * @len: Memory region length + * @gfp: GFP mask to use + * + * Duplicate region of a memory using resource managed kmalloc + */ +void *devm_kmemdup(struct device *dev, const void *src, size_t len, gfp_t gfp) +{ + void *p; + + p = devm_kmalloc(dev, len, gfp); + if (p) + memcpy(p, src, len); + + return p; +} +EXPORT_SYMBOL_GPL(devm_kmemdup); -- cgit v1.2.3-59-g8ed1b