Re: [PATCH v3 3/3] PM: domains: Make of_genpd_add_subdomain() to return -EPROBE_DEFER
From: Ulf Hansson <hidden>
Date: 2021-01-18 10:56:05
Also in:
linux-pm, lkml
On Mon, 18 Jan 2021 at 02:13, Dmitry Osipenko [off-list ref] wrote:
Driver of a power domain provider may not be ready at the time of of_genpd_add_subdomain() invocation. Make this function to return -EPROBE_DEFER instead of -ENOENT in order to remove a need from power domain drivers to handle the error code specially. Suggested-by: Ulf Hansson <redacted> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Ulf Hansson <redacted> Kind regards Uffe
quoted hunk ↗ jump to hunk
--- drivers/base/power/domain.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 2ab77aa516eb..7ef6764ee30f 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c@@ -2462,7 +2462,7 @@ int of_genpd_add_subdomain(struct of_phandle_args *parent_spec, out: mutex_unlock(&gpd_list_lock); - return ret; + return ret == -ENOENT ? -EPROBE_DEFER : ret; } EXPORT_SYMBOL_GPL(of_genpd_add_subdomain); --2.29.2