From: Ben Skeggs <bskeggs@redhat.com>
Date: Tue, 13 Dec 2016 00:22:53 +0000 (+1000)
Subject: drm/nouveau/bios/dp: fix handling of LevelEntryTableIndex on DP table 4.2
X-Git-Tag: v4.10-rc1~154^2^2~3
X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-linux.git;a=commitdiff_plain;h=79d48dadb0a71ec31ec8ce234ad0811a50123580

drm/nouveau/bios/dp: fix handling of LevelEntryTableIndex on DP table 4.2

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c
index d89e78c4e689..972370ed36f0 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c
@@ -207,8 +207,11 @@ nvbios_dpcfg_match(struct nvkm_bios *bios, u16 outp, u8 pc, u8 vs, u8 pe,
 	if (*ver >= 0x30) {
 		const u8 vsoff[] = { 0, 4, 7, 9 };
 		idx = (pc * 10) + vsoff[vs] + pe;
-		if (*ver >= 0x40 && *hdr >= 0x12)
+		if (*ver >= 0x40 && *ver <= 0x41 && *hdr >= 0x12)
 			idx += nvbios_rd08(bios, outp + 0x11) * 40;
+		else
+		if (*ver >= 0x42)
+			idx += nvbios_rd08(bios, outp + 0x11) * 10;
 	} else {
 		while ((data = nvbios_dpcfg_entry(bios, outp, ++idx,
 						  ver, hdr, cnt, len))) {