linux-kernel - [PATCH 1/2] staging: vboxvideo: Pass a new framebuffer to vbox_crtc_do_set

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Date:   Fri, 20 Jul 2018 10:17:30 -0700
From:   Steve Longerbeam <slongerbeam@...il.com>
To:     devel@...verdev.osuosl.org, dri-devel@...ts.freedesktop.org
Cc:     Steve Longerbeam <steve_longerbeam@...tor.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Cihangir Akturk <cakturk@...il.com>,
        Peter Rosin <peda@...ntia.se>,
        Paolo Cretaro <paolocretaro@...il.com>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 1/2] staging: vboxvideo: Pass a new framebuffer to vbox_crtc_do_set_base

This modifies vbox_crtc_do_set_base() to take a new framebuffer to
be activated, instead of the existing framebuffer attached to the crtc.
This change allows the function to be given the new framebuffer from
a page-flip request.

Signed-off-by: Steve Longerbeam <steve_longerbeam@...tor.com>
---
 drivers/staging/vboxvideo/vbox_mode.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/vboxvideo/vbox_mode.c b/drivers/staging/vboxvideo/vbox_mode.c
index b265fe9..688e80d 100644
--- a/drivers/staging/vboxvideo/vbox_mode.c
+++ b/drivers/staging/vboxvideo/vbox_mode.c
@@ -222,7 +222,9 @@ static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
 }
 
 static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
-				 struct drm_framebuffer *old_fb, int x, int y)
+				 struct drm_framebuffer *old_fb,
+				 struct drm_framebuffer *new_fb,
+				 int x, int y)
 {
 	struct vbox_private *vbox = crtc->dev->dev_private;
 	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
@@ -245,7 +247,7 @@ static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
 		vbox_bo_unreserve(bo);
 	}
 
-	vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
+	vbox_fb = to_vbox_framebuffer(new_fb);
 	obj = vbox_fb->obj;
 	bo = gem_to_vbox_bo(obj);
 
@@ -281,7 +283,7 @@ static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
 static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
 				   struct drm_framebuffer *old_fb)
 {
-	return vbox_crtc_do_set_base(crtc, old_fb, x, y);
+	return vbox_crtc_do_set_base(crtc, old_fb, CRTC_FB(crtc), x, y);
 }
 
 static int vbox_crtc_mode_set(struct drm_crtc *crtc,
-- 
2.7.4