From: Dan Carpenter dan.carpenter@oracle.com
[ Upstream commit 1d2c0c565bc0da25f5e899a862fb58e612b222df ]
The "entry" pointer is an offset from the list head and it doesn't point to a valid vmw_legacy_display_unit struct. Presumably the intent was to point to the last entry.
Also the "i++" wasn't used so I have removed that as well.
Fixes: d7e1958dbe4a ("drm/vmwgfx: Support older hardware.") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Reviewed-by: Roland Scheidegger sroland@vmware.com Signed-off-by: Roland Scheidegger sroland@vmware.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c index 3824595fece12..39f4ad0dab8db 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c @@ -79,7 +79,7 @@ static int vmw_ldu_commit_list(struct vmw_private *dev_priv) struct vmw_legacy_display_unit *entry; struct drm_framebuffer *fb = NULL; struct drm_crtc *crtc = NULL; - int i = 0; + int i;
/* If there is no display topology the host just assumes * that the guest will set the same layout as the host. @@ -90,12 +90,11 @@ static int vmw_ldu_commit_list(struct vmw_private *dev_priv) crtc = &entry->base.crtc; w = max(w, crtc->x + crtc->mode.hdisplay); h = max(h, crtc->y + crtc->mode.vdisplay); - i++; }
if (crtc == NULL) return 0; - fb = entry->base.crtc.primary->state->fb; + fb = crtc->primary->state->fb;
return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0], fb->format->cpp[0] * 8,