From: Thomas Hellstrom <thellstrom@vmware.com>
Date: Thu, 24 Aug 2017 06:06:31 +0000 (+0200)
Subject: drm/vmwgfx: Fix incorrect command header offset at restart
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1f1a36cc4d4986a800018f1d3eed94a4e92a576f;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

drm/vmwgfx: Fix incorrect command header offset at restart

Sometimes it appears like the device modifies the command header offset
member. So explicitly clear it when restarting after an error.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
---

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c
index 847490bbb2e2..c706ad30411b 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c
@@ -563,6 +563,7 @@ static void vmw_cmdbuf_work_func(struct work_struct *work)
 		entry->cmd += new_start_offset;
 		cb_hdr->length -= new_start_offset;
 		cb_hdr->errorOffset = 0;
+		cb_hdr->offset = 0;
 		list_add_tail(&entry->list, &restart_head[entry->cb_context]);
 		man->ctx[entry->cb_context].block_submission = true;
 	}