From f6bf17391fbb94086a1142a18f6301c24535df30 Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Tue, 6 Dec 2016 09:03:04 +1000
Subject: [PATCH] drm/nouveau/mxm: handle DCB 4.1 modification
Allows MXM DCB modification to be handled on GM20x and newer boards.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
drivers/gpu/drm/nouveau/nvkm/subdev/mxm/nv50.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/nv50.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/nv50.c
index db14fad2ddfc9..d4ecc43b92757 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/nv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/nv50.c
@@ -190,7 +190,7 @@ mxm_dcb_sanitise(struct nvkm_mxm *mxm)
struct nvkm_bios *bios = subdev->device->bios;
u8 ver, hdr, cnt, len;
u16 dcb = dcb_table(bios, &ver, &hdr, &cnt, &len);
- if (dcb == 0x0000 || ver != 0x40) {
+ if (dcb == 0x0000 || (ver != 0x40 && ver != 0x41)) {
nvkm_debug(subdev, "unsupported DCB version\n");
return;
}
--
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