Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756129AbaA2EDn (ORCPT ); Tue, 28 Jan 2014 23:03:43 -0500 Received: from mail-pa0-f49.google.com ([209.85.220.49]:58006 "EHLO mail-pa0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751560AbaA2EDG (ORCPT ); Tue, 28 Jan 2014 23:03:06 -0500 From: Manish Badarkhe To: linux-kernel@vger.kernel.org Cc: gregkh@linuxfoundation.org, broonie@kernel.org, lgirdwood@gmail.com, badarkhe.manish@gmail.com Subject: [PATCH V3 1/2] devres: introduce API "devm_kstrdup" Date: Wed, 29 Jan 2014 09:33:00 +0530 Message-Id: <1390968181-31800-2-git-send-email-badarkhe.manish@gmail.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1390968181-31800-1-git-send-email-badarkhe.manish@gmail.com> References: <1390968181-31800-1-git-send-email-badarkhe.manish@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch introduces "devm_kstrdup" API so that the device's driver can allocate memory and copy string. Signed-off-by: Manish Badarkhe --- :100644 100644 545c4de... 6e88a3d... M drivers/base/devres.c :100644 100644 952b010... 8fee649... M include/linux/device.h drivers/base/devres.c | 26 ++++++++++++++++++++++++++ include/linux/device.h | 2 ++ 2 files changed, 28 insertions(+) diff --git a/drivers/base/devres.c b/drivers/base/devres.c index 545c4de..6e88a3d 100644 --- a/drivers/base/devres.c +++ b/drivers/base/devres.c @@ -791,6 +791,32 @@ void * devm_kmalloc(struct device *dev, size_t size, gfp_t gfp) EXPORT_SYMBOL_GPL(devm_kmalloc); /** + * devm_kstrdup - Allocate resource managed space and + * and copy an existing string + * @dev: Device to allocate memory for + * @s: the string to duplicate + * @size: Allocation size + * @gfp: the GFP mask used in the devm_kzalloc() call when + * allocating memory + * RETURNS: + * Pointer to allocated string on success, NULL on failure. + */ +char *devm_kstrdup(struct device *dev, + const char *s, size_t size, gfp_t gfp) +{ + char *buf; + + if (!s) + return NULL; + + buf = devm_kzalloc(dev, size, gfp); + if (buf) + memcpy(buf, s, size); + return buf; +} +EXPORT_SYMBOL_GPL(devm_kstrdup); + +/** * devm_kfree - Resource-managed kfree * @dev: Device this memory belongs to * @p: Memory to free diff --git a/include/linux/device.h b/include/linux/device.h index 952b010..8fee649 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -626,6 +626,8 @@ static inline void *devm_kcalloc(struct device *dev, return devm_kmalloc_array(dev, n, size, flags | __GFP_ZERO); } extern void devm_kfree(struct device *dev, void *p); +extern char *devm_kstrdup(struct device *dev, const char *s, size_t size, + gfp_t gfp); void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res); void __iomem *devm_request_and_ioremap(struct device *dev, -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/