diff options
| author |   Hans de Goede <hdegoede@redhat.com> | 2018-09-10 20:30:39 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-11 18:39:54 +0200 |
| commit | 65aac17423284634169489f298169c3e3f099cc7 (patch) | |
| tree | 1dfaa4a83e05d59d98a585a1830c4fb1d1f164c6 /drivers/staging/vboxvideo/vbox_mode.c | |
| parent | staging: vboxvideo: Fix IRQs no longer working (diff) | |
| download | linux-dev-65aac17423284634169489f298169c3e3f099cc7.tar.xz linux-dev-65aac17423284634169489f298169c3e3f099cc7.zip | |
staging: vboxvideo: Change address of scanout buffer on page-flip
Commit 2408898e3b6c ("staging: vboxvideo: Add page-flip support") only
calls vbox_crtc_do_set_base() on page-flips, but despite that function's
name it only pins the new fb, unpins the old fb and sets
vbox_crtc->fb_offset. It does not program the hardware to scan out at the
new vbox_crtc->fb_offset value.
This was causing only every other frame (assuming page-flipping between 2
buffers) to be shown since we kept scanning out of the old (now unpinned!)
buffer.
This commit fixes this by adding code to vbox_crtc_page_flip() to tell
the hardware to scanout from the new fb_offset.
Fixes: 2408898e3b6c ("staging: vboxvideo: Add page-flip support")
Cc: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/vboxvideo/vbox_mode.c')
| -rw-r--r-- | drivers/staging/vboxvideo/vbox_mode.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/staging/vboxvideo/vbox_mode.c b/drivers/staging/vboxvideo/vbox_mode.c index a83eac8668d0..79836c8fb909 100644 --- a/drivers/staging/vboxvideo/vbox_mode.c +++ b/drivers/staging/vboxvideo/vbox_mode.c @@ -323,6 +323,11 @@ static int vbox_crtc_page_flip(struct drm_crtc *crtc, if (rc) return rc; + mutex_lock(&vbox->hw_mutex); + vbox_set_view(crtc); + vbox_do_modeset(crtc, &crtc->mode); + mutex_unlock(&vbox->hw_mutex); + spin_lock_irqsave(&drm->event_lock, flags); if (event) |