diff options
| author | Ulf Hansson <ulf.hansson@linaro.org> | 2025-07-01 13:47:26 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2025-07-09 13:30:06 +0200 |
| commit | eb34a0b5fee736c559404691b4c3ec48c5375a8c (patch) | |
| tree | 2aed2d97c98a9bcf2ee18afdf21640f9e0adb38b | |
| parent | 039d2b0a1b6222c2f964de827368e87e286ae554 (diff) | |
cpuidle: riscv-sbi: Drop redundant sync_state support
The recent updates to the genpd core, can entirely manage the sync_state
support for the cpuidle-riscv-sbi-domain. More precisely, genpd prevents
our ->power_off() callback from being invoked, until all of our consumers
are ready for it.
Let's therefore drop the sync_state support for the
cpuidle-riscv-sbi-domain as it has become redundant.
Cc: Anup Patel <anup@brainfault.org>
Cc: linux-riscv@lists.infradead.org
Tested-by: Hiago De Franco <hiago.franco@toradex.com> # Colibri iMX8X
Tested-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> # TI AM62A,Xilinx ZynqMP ZCU106
Reviewed-by: Rahul Pathak <rpathak@ventanamicro.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20250701114733.636510-25-ulf.hansson@linaro.org
| -rw-r--r-- | drivers/cpuidle/cpuidle-riscv-sbi.c | 22 |
1 files changed, 1 insertions, 21 deletions
diff --git a/drivers/cpuidle/cpuidle-riscv-sbi.c b/drivers/cpuidle/cpuidle-riscv-sbi.c index 83d58d00872f..a360bc4d20b7 100644 --- a/drivers/cpuidle/cpuidle-riscv-sbi.c +++ b/drivers/cpuidle/cpuidle-riscv-sbi.c @@ -44,7 +44,6 @@ static DEFINE_PER_CPU_READ_MOSTLY(struct sbi_cpuidle_data, sbi_cpuidle_data); static DEFINE_PER_CPU(struct sbi_domain_state, domain_state); static bool sbi_cpuidle_use_osi; static bool sbi_cpuidle_use_cpuhp; -static bool sbi_cpuidle_pd_allow_domain_state; static inline void sbi_set_domain_state(u32 state) { @@ -345,20 +344,6 @@ deinit: return ret; } -static void sbi_cpuidle_domain_sync_state(struct device *dev) -{ - struct sbi_pd_provider *pd_provider; - - /* - * All devices have now been attached/probed to the PM domain - * topology, hence it's fine to allow domain states to be picked. - */ - sbi_cpuidle_pd_allow_domain_state = true; - - list_for_each_entry(pd_provider, &sbi_pd_providers, link) - of_genpd_sync_state(pd_provider->node); -} - #ifdef CONFIG_DT_IDLE_GENPD static int sbi_cpuidle_pd_power_off(struct generic_pm_domain *pd) @@ -369,9 +354,6 @@ static int sbi_cpuidle_pd_power_off(struct generic_pm_domain *pd) if (!state->data) return 0; - if (!sbi_cpuidle_pd_allow_domain_state) - return -EBUSY; - /* OSI mode is enabled, set the corresponding domain state. */ pd_state = state->data; sbi_set_domain_state(*pd_state); @@ -401,8 +383,7 @@ static int sbi_pd_init(struct device_node *np) if (!pd_provider) goto free_pd; - pd->flags |= GENPD_FLAG_IRQ_SAFE | GENPD_FLAG_CPU_DOMAIN | - GENPD_FLAG_NO_SYNC_STATE; + pd->flags |= GENPD_FLAG_IRQ_SAFE | GENPD_FLAG_CPU_DOMAIN; /* Allow power off when OSI is available. */ if (sbi_cpuidle_use_osi) @@ -570,7 +551,6 @@ static struct platform_driver sbi_cpuidle_driver = { .probe = sbi_cpuidle_probe, .driver = { .name = "sbi-cpuidle", - .sync_state = sbi_cpuidle_domain_sync_state, }, }; |