linux-kernel - [PATCH v3 03/20] devres: Introduce devm_kmemdup

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Message-Id: <20250203080902.1864382-4-raag.jadav@intel.com>
Date: Mon,  3 Feb 2025 13:38:45 +0530
From: Raag Jadav <raag.jadav@...el.com>
To: gregkh@...uxfoundation.org,
	rafael@...nel.org,
	linus.walleij@...aro.org,
	mika.westerberg@...ux.intel.com,
	andriy.shevchenko@...ux.intel.com,
	dmitry.torokhov@...il.com,
	lgirdwood@...il.com,
	broonie@...nel.org,
	sre@...nel.org,
	jic23@...nel.org,
	przemyslaw.kitszel@...el.com
Cc: linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-input@...r.kernel.org,
	linux-sound@...r.kernel.org,
	linux-pm@...r.kernel.org,
	linux-iio@...r.kernel.org,
	Raag Jadav <raag.jadav@...el.com>
Subject: [PATCH v3 03/20] devres: Introduce devm_kmemdup_array()

Introduce '_array' variant of devm_kmemdup() which is more robust and
consistent with alloc family of helpers.

Suggested-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Signed-off-by: Raag Jadav <raag.jadav@...el.com>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
---
 include/linux/device/devres.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/device/devres.h b/include/linux/device/devres.h
index 128d65defafc..6ef400abfe21 100644
--- a/include/linux/device/devres.h
+++ b/include/linux/device/devres.h
@@ -79,6 +79,11 @@ void devm_kfree(struct device *dev, const void *p);
 
 void * __realloc_size(3)
 devm_kmemdup(struct device *dev, const void *src, size_t len, gfp_t gfp);
+static inline void *devm_kmemdup_array(struct device *dev, const void *src,
+				       size_t n, size_t size, gfp_t flags)
+{
+	return devm_kmemdup(dev, src, size_mul(size, n), flags);
+}
 
 char * __malloc
 devm_kstrdup(struct device *dev, const char *s, gfp_t gfp);
-- 
2.34.1