From 2c6719a3ef2f7da59a622ba1176ad41d553f8f43 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sat, 15 May 2010 23:22:18 +0200 Subject: [PATCH] drivers/platform/x86: Use kmemdup Use kmemdup when some other buffer is immediately copied into the allocated region. A simplified version of the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ expression from,to,size,flag; statement S; @@ - to = \(kmalloc\|kzalloc\)(size,flag); + to = kmemdup(from,size,flag); if (to==NULL || ...) S - memcpy(to, from, size); // Signed-off-by: Julia Lawall --- drivers/platform/x86/wmi.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c index 39ec5b6..17df134 100644 --- a/drivers/platform/x86/wmi.c +++ b/drivers/platform/x86/wmi.c @@ -756,12 +756,10 @@ static __init acpi_status parse_wdg(acpi_handle handle) total = obj->buffer.length / sizeof(struct guid_block); - gblock = kzalloc(obj->buffer.length, GFP_KERNEL); + gblock = kmemdup(obj->buffer.pointer, obj->buffer.length, GFP_KERNEL); if (!gblock) return AE_NO_MEMORY; - memcpy(gblock, obj->buffer.pointer, obj->buffer.length); - for (i = 0; i < total; i++) { /* Some WMI devices, like those for nVidia hooks, have a -- 2.7.4