5.15-stable review patch. If anyone has any objections, please let me know.
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From: Paul Cercueil paul@crapouillou.net
[ Upstream commit 3f4b32511a77bc5a05cfbf26fec94c4e1b1cf46a ]
The deprecated UNIVERSAL_DEV_PM_OPS() macro uses the provided callbacks for both runtime PM and system sleep, which is very likely to be a mistake, as a system sleep can be triggered while a given device is already PM-suspended, which would cause the suspend callback to be called twice.
The amount of users of UNIVERSAL_DEV_PM_OPS() is also tiny (16 occurences) compared to the number of places where SET_SYSTEM_SLEEP_PM_OPS() is used with pm_runtime_force_suspend() and pm_runtime_force_resume(), which makes me think that none of these cases are actually valid.
As the new macro DEFINE_UNIVERSAL_DEV_PM_OPS() which was introduced to replace UNIVERSAL_DEV_PM_OPS() is currently unused, remove it before someone starts to use it in yet another invalid case.
Signed-off-by: Paul Cercueil paul@crapouillou.net Acked-by: Jonathan Cameron Jonathan.Cameron@huawei.com Reviewed-by: Ulf Hansson ulf.hansson@linaro.org Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Stable-dep-of: 5af9b304bc60 ("phy: xilinx: phy-zynqmp: Fix SGMII linkup failure on resume") Signed-off-by: Sasha Levin sashal@kernel.org --- include/linux/pm.h | 21 ++++++++------------- 1 file changed, 8 insertions(+), 13 deletions(-)
diff --git a/include/linux/pm.h b/include/linux/pm.h index d1c19f5b1380f..452c1ed902b75 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -366,6 +366,12 @@ const struct dev_pm_ops name = { \ SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \ }
+/* Deprecated. Use DEFINE_SIMPLE_DEV_PM_OPS() instead. */ +#define SIMPLE_DEV_PM_OPS(name, suspend_fn, resume_fn) \ +const struct dev_pm_ops __maybe_unused name = { \ + SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \ +} + /* * Use this for defining a set of PM operations to be used in all situations * (system suspend, hibernation or runtime PM). @@ -378,20 +384,9 @@ const struct dev_pm_ops name = { \ * suspend and "early" resume callback pointers, .suspend_late() and * .resume_early(), to the same routines as .runtime_suspend() and * .runtime_resume(), respectively (and analogously for hibernation). + * + * Deprecated. You most likely don't want this macro. */ -#define DEFINE_UNIVERSAL_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \ -static const struct dev_pm_ops name = { \ - SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \ - RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \ -} - -/* Deprecated. Use DEFINE_SIMPLE_DEV_PM_OPS() instead. */ -#define SIMPLE_DEV_PM_OPS(name, suspend_fn, resume_fn) \ -const struct dev_pm_ops __maybe_unused name = { \ - SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \ -} - -/* Deprecated. Use DEFINE_UNIVERSAL_DEV_PM_OPS() instead. */ #define UNIVERSAL_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \ const struct dev_pm_ops __maybe_unused name = { \ SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \