From d6bd535d88429b4804d6d917ab4f586306f9a855 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sat, 15 May 2010 23:16:21 +0200 Subject: [PATCH] ACPI: EC: 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 Acked-by: Alexey Starikovskiy Signed-off-by: Len Brown --- drivers/acpi/ec.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index f2234db85da0..e61d4f8e62a5 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -1027,10 +1027,9 @@ int __init acpi_ec_ecdt_probe(void) /* Don't trust ECDT, which comes from ASUSTek */ if (!EC_FLAGS_VALIDATE_ECDT) goto install; - saved_ec = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL); + saved_ec = kmemdup(boot_ec, sizeof(struct acpi_ec), GFP_KERNEL); if (!saved_ec) return -ENOMEM; - memcpy(saved_ec, boot_ec, sizeof(struct acpi_ec)); /* fall through */ } -- 2.34.1