diff options
| author | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-05-09 16:00:39 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2018-07-10 18:59:05 +0300 |
| commit | 5fa8e4a22182df8ea39adeba4bd518506e26a96d (patch) | |
| tree | 4b9a3df577632f7c2165ea86d4d98f2cb5018266 /include/drm/drm_panel.h | |
| parent | 0ca0c827efdf248dfb4bbd4b9066acb6337e07ac (diff) | |
| download | linux-5fa8e4a22182df8ea39adeba4bd518506e26a96d.tar.xz | |
drm/panel: Make of_drm_find_panel() return an ERR_PTR() instead of NULL
Right now, the DRM panel logic returns NULL when a panel pointing to
the passed OF node is not present in the list of registered panels.
Most drivers interpret this NULL value as -EPROBE_DEFER, but we are
about to modify the semantic of of_drm_find_panel() and let the
framework return -ENODEV when the device node we're pointing to has
a status property that is not equal to "okay" or "ok".
Let's first patch the of_drm_find_panel() implementation to return
ERR_PTR(-EPROBE_DEFER) instead of NULL and patch all callers to replace
the '!panel' check by an 'IS_ERR(panel)' one.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180509130042.9435-2-boris.brezillon@bootlin.com
Diffstat (limited to 'include/drm/drm_panel.h')
| -rw-r--r-- | include/drm/drm_panel.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h index 26a1b5fd8796..582a0ec0aa70 100644 --- a/include/drm/drm_panel.h +++ b/include/drm/drm_panel.h @@ -200,7 +200,7 @@ struct drm_panel *of_drm_find_panel(const struct device_node *np); #else static inline struct drm_panel *of_drm_find_panel(const struct device_node *np) { - return NULL; + return ERR_PTR(-ENODEV); } #endif |