From: Julia Lawall <[email protected]> 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/) // <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: Julia Lawall <[email protected]> --- drivers/platform/x86/wmi.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff -u -p a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c --- a/drivers/platform/x86/wmi.c +++ b/drivers/platform/x86/wmi.c @@ -756,12 +756,10 @@ static __init acpi_status parse_wdg(acpi 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 -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
