diff options
| author | Dave Airlie <airlied@redhat.com> | 2014-01-16 08:28:22 +0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2014-01-16 08:43:04 +0400 |
| commit | 53dac830537b51df555ba5e7ebb236705b7eaa7c (patch) | |
| tree | 40c529676e0f0fd6784f229eb7df00af8bb706a7 /drivers/gpu/drm/mgag200/mgag200_cursor.c | |
| parent | c5416d661daa9ccef4f42259ad0d48e28b5f950f (diff) | |
| download | linux-53dac830537b51df555ba5e7ebb236705b7eaa7c.tar.xz | |
drm/mgag200: fix oops in cursor code.
In some cases we enter the cursor code with file_priv = NULL causing an oops,
we also can try to unpin something that isn't pinned, and this is a good fix for it.
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/mgag200/mgag200_cursor.c')
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_cursor.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_cursor.c b/drivers/gpu/drm/mgag200/mgag200_cursor.c index 801731aeab61..9f9780b7ddf0 100644 --- a/drivers/gpu/drm/mgag200/mgag200_cursor.c +++ b/drivers/gpu/drm/mgag200/mgag200_cursor.c @@ -22,8 +22,10 @@ static void mga_hide_cursor(struct mga_device *mdev) { WREG8(MGA_CURPOSXL, 0); WREG8(MGA_CURPOSXH, 0); - mgag200_bo_unpin(mdev->cursor.pixels_1); - mgag200_bo_unpin(mdev->cursor.pixels_2); + if (mdev->cursor.pixels_1->pin_count) + mgag200_bo_unpin(mdev->cursor.pixels_1); + if (mdev->cursor.pixels_2->pin_count) + mgag200_bo_unpin(mdev->cursor.pixels_2); } int mga_crtc_cursor_set(struct drm_crtc *crtc, @@ -32,7 +34,7 @@ int mga_crtc_cursor_set(struct drm_crtc *crtc, uint32_t width, uint32_t height) { - struct drm_device *dev = (struct drm_device *)file_priv->minor->dev; + struct drm_device *dev = crtc->dev; struct mga_device *mdev = (struct mga_device *)dev->dev_private; struct mgag200_bo *pixels_1 = mdev->cursor.pixels_1; struct mgag200_bo *pixels_2 = mdev->cursor.pixels_2; |