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| author | Richard Acayan <mailingradian@gmail.com> | 2023-11-21 19:54:59 -0500 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2023-11-22 09:51:16 +0100 |
| commit | 9c6894320f49c146270623bb37cd700db7cf13df (patch) | |
| tree | 451a9238d1641e1beb33ec51f7fc20aef17ff593 | |
| parent | a4dea9a06f72c7885f8d4dccedec7e477878d798 (diff) | |
| download | lwn-9c6894320f49c146270623bb37cd700db7cf13df.tar.gz lwn-9c6894320f49c146270623bb37cd700db7cf13df.zip | |
fbdev/simplefb: Suppress error on missing power domains
When the power domains are missing, the call to of_count_phandle_with_args
fails with -ENOENT. The power domains are not required and there are
some device trees that do not specify them. Suppress this error to fix
devices without power domains attached to simplefb.
Fixes: 92a511a568e4 ("fbdev/simplefb: Add support for generic power-domains")
Closes: https://lore.kernel.org/linux-fbdev/ZVwFNfkqjrvhFHM0@radian
Signed-off-by: Richard Acayan <mailingradian@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231122005457.330066-3-mailingradian@gmail.com
| -rw-r--r-- | drivers/video/fbdev/simplefb.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/video/fbdev/simplefb.c b/drivers/video/fbdev/simplefb.c index fe682af63827..6f58ee276ad1 100644 --- a/drivers/video/fbdev/simplefb.c +++ b/drivers/video/fbdev/simplefb.c @@ -466,6 +466,10 @@ static int simplefb_attach_genpds(struct simplefb_par *par, err = of_count_phandle_with_args(dev->of_node, "power-domains", "#power-domain-cells"); if (err < 0) { + /* Nothing wrong if optional PDs are missing */ + if (err == -ENOENT) + return 0; + dev_info(dev, "failed to parse power-domains: %d\n", err); return err; } |