From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Wed, 27 Apr 2011 18:04:16 +0000 (+0200)
Subject: compat: backport vzalloc()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=37ffaa79245035655920cdfc5747011285e7c58b;p=openwrt%2Fstaging%2Fblogic.git

compat: backport vzalloc()

vzalloc() is used in rtl8192ce now.

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

diff --git a/compat/compat-2.6.37.c b/compat/compat-2.6.37.c
index 8636c65332b6..c49efeaf26e1 100644
--- a/compat/compat-2.6.37.c
+++ b/compat/compat-2.6.37.c
@@ -334,4 +334,23 @@ void compat_led_classdev_unregister(struct led_classdev *led_cdev)
 }
 EXPORT_SYMBOL(compat_led_classdev_unregister);
 
+/**
+ *	vzalloc - allocate virtually contiguous memory with zero fill
+ *	@size:	allocation size
+ *	Allocate enough pages to cover @size from the page level
+ *	allocator and map them into contiguous kernel virtual space.
+ *	The memory allocated is set to zero.
+ *
+ *	For tight control over page level allocator and protection flags
+ *	use __vmalloc() instead.
+ */
+void *vzalloc(unsigned long size)
+{
+	void *buf;
+	buf = vmalloc(size);
+	memset(buf, 0, size);
+	return buf;
+}
+EXPORT_SYMBOL(vzalloc);
+
 #endif
diff --git a/include/linux/compat-2.6.37.h b/include/linux/compat-2.6.37.h
index cee23a896667..57868f528847 100644
--- a/include/linux/compat-2.6.37.h
+++ b/include/linux/compat-2.6.37.h
@@ -110,6 +110,8 @@ extern void compat_led_brightness_set(struct led_classdev *led_cdev,
 
 #define netdev_refcnt_read(a) atomic_read(&a->refcnt)
 
+extern void *vzalloc(unsigned long size);
+
 #endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)) */
 
 #endif /* LINUX_26_37_COMPAT_H */