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 /drivers/gpu/drm/bridge/lvds-encoder.c | |
| 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 'drivers/gpu/drm/bridge/lvds-encoder.c')
| -rw-r--r-- | drivers/gpu/drm/bridge/lvds-encoder.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/bridge/lvds-encoder.c b/drivers/gpu/drm/bridge/lvds-encoder.c index 75b0d3f6e4de..f56c92f7af7c 100644 --- a/drivers/gpu/drm/bridge/lvds-encoder.c +++ b/drivers/gpu/drm/bridge/lvds-encoder.c @@ -68,9 +68,9 @@ static int lvds_encoder_probe(struct platform_device *pdev) panel = of_drm_find_panel(panel_node); of_node_put(panel_node); - if (!panel) { + if (IS_ERR(panel)) { dev_dbg(&pdev->dev, "panel not found, deferring probe\n"); - return -EPROBE_DEFER; + return PTR_ERR(panel); } lvds_encoder->panel_bridge = |