Commit 2c6719a3 authored by Julia Lawall's avatar Julia Lawall Committed by Matthew Garrett

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: (

// <smpl>
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);
// </smpl>
Signed-off-by: default avatarJulia Lawall <>
parent 6c75dd0f
......@@ -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
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