[PATCH 3.12 096/206] drm/nouveau/bios: memset dcb struct to zero before parsing

From: Jiri Slaby
Date: Tue Nov 18 2014 - 09:58:41 EST

From: Ben Skeggs <bskeggs@xxxxxxxxxx>

3.12-stable review patch. If anyone has any objections, please let me know.


commit 595d373f1e9c9ce0fc946457fdb488e8a58972cd upstream.

Fixes type/mask calculation being based on uninitialised data for VGA

Signed-off-by: Ben Skeggs <bskeggs@xxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c b/drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c
index 2d9b9d7a7992..f3edd2841f2d 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c
@@ -124,6 +124,7 @@ dcb_outp_parse(struct nouveau_bios *bios, u8 idx, u8 *ver, u8 *len,
struct dcb_output *outp)
u16 dcb = dcb_outp(bios, idx, ver, len);
+ memset(outp, 0x00, sizeof(*outp));
if (dcb) {
if (*ver >= 0x20) {
u32 conn = nv_ro32(bios, dcb + 0x00);

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