diff options
| author | Jyri Sarha <jsarha@ti.com> | 2018-04-26 10:07:00 +0200 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2018-05-18 11:22:06 +0200 |
| commit | 0c08754b59da5557532d946599854e6df28edc22 (patch) | |
| tree | f0ffc11a747bc9d185ec6d62bf8a0ec288cc1e49 /include/drm/drm_panel.h | |
| parent | drm/panel: Remove drm_panel_detach() calls from all panel drivers (diff) | |
| download | linux-0c08754b59da5557532d946599854e6df28edc22.tar.xz linux-0c08754b59da5557532d946599854e6df28edc22.zip | |
drm/panel: Add device_link from panel device to DRM device
Add device_link from panel device (supplier) to DRM device (consumer)
when drm_panel_attach() is called. This patch should protect the master
DRM driver if an attached panel driver unbinds while it is in use. The
device_link should make sure the DRM device is unbound before the panel
driver becomes unavailable.
The device_link is removed when drm_panel_detach() is called. The
drm_panel_detach() should be called by the consumer DRM driver, not the
panel driver, otherwise both drivers are racing to delete the same link.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/b53584fd988d045c13de22d81825395b0ae0aad7.1524727888.git.jsarha@ti.com
Diffstat (limited to 'include/drm/drm_panel.h')
| -rw-r--r-- | include/drm/drm_panel.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h index 14ac240a1f64..26a1b5fd8796 100644 --- a/include/drm/drm_panel.h +++ b/include/drm/drm_panel.h @@ -89,6 +89,7 @@ struct drm_panel { struct drm_device *drm; struct drm_connector *connector; struct device *dev; + struct device_link *link; const struct drm_panel_funcs *funcs; |