diff options
| author |   Sibi Sankar <quic_sibis@quicinc.com> | 2024-10-30 18:25:10 +0530 |
|---|---|---|
| committer |   Ulf Hansson <ulf.hansson@linaro.org> | 2024-10-30 17:11:28 +0100 |
| commit | 899f44531fe6cac4b024710fec647ecc127724b8 (patch) | |
| tree | e6429446162e5b6aa448704e58832d975a479a29 /include/linux/pm_domain.h | |
| parent | PM: domains: Fix alloc/free in dev_pm_domain_attach|detach_list() (diff) | |
| download | wireguard-linux-899f44531fe6cac4b024710fec647ecc127724b8.tar.xz wireguard-linux-899f44531fe6cac4b024710fec647ecc127724b8.zip | |
pmdomain: core: Add GENPD_FLAG_DEV_NAME_FW flag
Introduce GENPD_FLAG_DEV_NAME_FW flag which instructs genpd to generate
an unique device name using ida. It is aimed to be used by genpd providers
which derive their names directly from FW making them susceptible to
debugfs node creation failures.
Reported-by: Johan Hovold <johan+linaro@kernel.org>
Closes: https://lore.kernel.org/lkml/ZoQjAWse2YxwyRJv@hovoldconsulting.com/
Fixes: 718072ceb211 ("PM: domains: create debugfs nodes when adding power domains")
Suggested-by: Ulf Hansson <ulf.hansson@linaro.org>
Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
Cc: stable@vger.kernel.org
Message-ID: <20241030125512.2884761-5-quic_sibis@quicinc.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'include/linux/pm_domain.h')
| -rw-r--r-- | include/linux/pm_domain.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index b637ec14025f..cf4b11be3709 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -92,6 +92,10 @@ struct dev_pm_domain_list { * GENPD_FLAG_OPP_TABLE_FW: The genpd provider supports performance states, * but its corresponding OPP tables are not * described in DT, but are given directly by FW. + * + * GENPD_FLAG_DEV_NAME_FW: Instructs genpd to generate an unique device name + * using ida. It is used by genpd providers which + * get their genpd-names directly from FW. */ #define GENPD_FLAG_PM_CLK (1U << 0) #define GENPD_FLAG_IRQ_SAFE (1U << 1) @@ -101,6 +105,7 @@ struct dev_pm_domain_list { #define GENPD_FLAG_RPM_ALWAYS_ON (1U << 5) #define GENPD_FLAG_MIN_RESIDENCY (1U << 6) #define GENPD_FLAG_OPP_TABLE_FW (1U << 7) +#define GENPD_FLAG_DEV_NAME_FW (1U << 8) enum gpd_status { GENPD_STATE_ON = 0, /* PM domain is on */ @@ -163,6 +168,7 @@ struct generic_pm_domain { atomic_t sd_count; /* Number of subdomains with power "on" */ enum gpd_status status; /* Current state of the domain */ unsigned int device_count; /* Number of devices */ + unsigned int device_id; /* unique device id */ unsigned int suspended_count; /* System suspend device counter */ unsigned int prepared_count; /* Suspend counter of prepared devices */ unsigned int performance_state; /* Aggregated max performance state */ |