linux-kernel - [PATCH] drivers, char: Use {k,v}zalloc to allocate memory

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Date:	Mon, 25 Apr 2011 22:39:18 +0600
From:	Rakib Mullick <rakib.mullick@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Arnd Bergmann <arnd@...db.de>
Subject: [PATCH] drivers, char: Use {k,v}zalloc to allocate memory

Let memory allocator initialize the allocated memory as null, thus
remove the use of memset.

Signed-off-by: Rakib Mullick <rakib.mullick@...il.com>
---

diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
index 966a95b..25d139c 100644
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -271,14 +271,13 @@ mspec_mmap(struct file *file, struct
vm_area_struct *vma,
 	pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
 	vdata_size = sizeof(struct vma_data) + pages * sizeof(long);
 	if (vdata_size <= PAGE_SIZE)
-		vdata = kmalloc(vdata_size, GFP_KERNEL);
+		vdata = kzalloc(vdata_size, GFP_KERNEL);
 	else {
-		vdata = vmalloc(vdata_size);
+		vdata = vzalloc(vdata_size);
 		flags = VMD_VMALLOCED;
 	}
 	if (!vdata)
 		return -ENOMEM;
-	memset(vdata, 0, vdata_size);
 
 	vdata->vm_start = vma->vm_start;
 	vdata->vm_end = vma->vm_end;

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