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| author | Alex Bee <knaerzche@gmail.com> | 2021-09-14 17:07:56 +0200 |
|---|---|---|
| committer | Heiko Stuebner <heiko@sntech.de> | 2021-09-21 11:17:37 +0200 |
| commit | 37825e07ab413187e1ea078bc33dcdb835008be2 (patch) | |
| tree | 02dc33a4aeed69fe615d0092f7dd13f3fdaca0be /drivers | |
| parent | drm/rockchip: remove unused psr_list{,_lock} (diff) | |
| download | linux-37825e07ab413187e1ea078bc33dcdb835008be2.tar.xz linux-37825e07ab413187e1ea078bc33dcdb835008be2.zip | |
drm/rockchip: handle non-platform devices in rockchip_drm_endpoint_is_subdriver
As discussed at [1] rockchip_drm_endpoint_is_subdriver will currently always
return -ENODEV for non-platform-devices (e.g. external i2c bridges), what
makes them never being considered in rockchip_rgb_init.
As suggested at [1] this additionally adds a of_device_is_available for
the node found, which will work for both platform and non-platform devices.
Also we can return early for non-platform-devices if they are enabled,
as rockchip_sub_drivers contains exclusively platform-devices.
[1] https://lore.kernel.org/all/20210316182753.GA25685@earth.li/
Suggested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Alex Bee <knaerzche@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914150756.85190-1-knaerzche@gmail.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c index 6fa686e6c7e9..0ea085335235 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -272,10 +272,17 @@ int rockchip_drm_endpoint_is_subdriver(struct device_node *ep) return -ENODEV; /* status disabled will prevent creation of platform-devices */ + if (!of_device_is_available(node)) { + of_node_put(node); + return -ENODEV; + } + pdev = of_find_device_by_node(node); of_node_put(node); + + /* enabled non-platform-devices can immediately return here */ if (!pdev) - return -ENODEV; + return false; /* * All rockchip subdrivers have probed at this point, so |