From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sat, 9 Aug 2014 12:00:29 +0000 (+0200)
Subject: backports: add devm_kmalloc_array()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7b74819d3532a47bff0ca15b6c0fcaabca0287e3;p=openwrt%2Fstaging%2Fblogic.git

backports: add devm_kmalloc_array()

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---

diff --git a/backport/backport-include/linux/device.h b/backport/backport-include/linux/device.h
index 9ed73988e1af..830105df33fd 100644
--- a/backport/backport-include/linux/device.h
+++ b/backport/backport-include/linux/device.h
@@ -160,4 +160,15 @@ __ATTRIBUTE_GROUPS(_name)
 extern char *devm_kstrdup(struct device *dev, const char *s, gfp_t gfp);
 #endif
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,13,0)
+#define devm_kmalloc_array LINUX_BACKPORT(devm_kmalloc_array)
+static inline void *devm_kmalloc_array(struct device *dev,
+				       size_t n, size_t size, gfp_t flags)
+{
+	if (size != 0 && n > SIZE_MAX / size)
+		return NULL;
+	return devm_kmalloc(dev, n * size, flags);
+}
+#endif
+
 #endif /* __BACKPORT_DEVICE_H */