From 6d9ff473317245e3e5cd9922b4520411c2296388 Mon Sep 17 00:00:00 2001 From: Ivan Khoronzhuk Date: Wed, 18 Feb 2015 13:33:19 +0200 Subject: [PATCH] firmware: dmi_scan: Fix dmi_len type According to SMBIOSv3 specification the length of DMI table can be up to 32bits wide. So use appropriate type to avoid overflow. It's obvious that dmi_num theoretically can be more than u16 also, so it's can be changed to u32 or at least it's better to use int instead of u16, but on that moment I cannot imagine dmi structure count more than 65535 and it can require changing type of vars that work with it. So I didn't correct it. Acked-by: Ard Biesheuvel Signed-off-by: Ivan Khoronzhuk Cc: Signed-off-by: Matt Fleming --- drivers/firmware/dmi_scan.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c index a44b87c7b45c..69fac068669f 100644 --- a/drivers/firmware/dmi_scan.c +++ b/drivers/firmware/dmi_scan.c @@ -78,7 +78,7 @@ static const char * __init dmi_string(const struct dmi_header *dm, u8 s) * We have to be cautious here. We have seen BIOSes with DMI pointers * pointing to completely the wrong place for example */ -static void dmi_table(u8 *buf, int len, int num, +static void dmi_table(u8 *buf, u32 len, int num, void (*decode)(const struct dmi_header *, void *), void *private_data) { @@ -115,7 +115,7 @@ static void dmi_table(u8 *buf, int len, int num, } static phys_addr_t dmi_base; -static u16 dmi_len; +static u32 dmi_len; static u16 dmi_num; static int __init dmi_walk_early(void (*decode)(const struct dmi_header *, -- 2.20.1