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mei: mei-me: resume device in prepare

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Asynchronous runtime resume is not possible while the system
is suspending.
The power management subsystem resumes the device only in the
suspend phase, not in the prepare phase.
Force resume device in prepare to allow drivers on mei bus
to communicate in their prepare callbacks.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Reviewed-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alan Previn <alan.previn.teres.alexis@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230125082637.118970-2-alan.previn.teres.alexis@intel.com
This commit is contained in:
Alexander Usyskin 2023-01-25 00:26:32 -08:00 committed by Rodrigo Vivi
parent 220b3376c0
commit 907deab2af
1 changed files with 19 additions and 1 deletions
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20
drivers/misc/mei/pci-me.c
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@ -340,6 +340,12 @@ static void mei_me_remove(struct pci_dev *pdev)
}
#ifdef CONFIG_PM_SLEEP
static int mei_me_pci_prepare(struct device *device)
{
pm_runtime_resume(device);
return 0;
}
static int mei_me_pci_suspend(struct device *device)
{
struct pci_dev *pdev = to_pci_dev(device);
@ -396,7 +402,17 @@ static int mei_me_pci_resume(struct device *device)
return 0;
}
#endif /* CONFIG_PM_SLEEP */
static void mei_me_pci_complete(struct device *device)
{
pm_runtime_suspend(device);
}
#else /* CONFIG_PM_SLEEP */
#define mei_me_pci_prepare NULL
#define mei_me_pci_complete NULL
#endif /* !CONFIG_PM_SLEEP */
#ifdef CONFIG_PM
static int mei_me_pm_runtime_idle(struct device *device)
@ -499,6 +515,8 @@ static inline void mei_me_unset_pm_domain(struct mei_device *dev)
}
static const struct dev_pm_ops mei_me_pm_ops = {
.prepare = mei_me_pci_prepare,
.complete = mei_me_pci_complete,
SET_SYSTEM_SLEEP_PM_OPS(mei_me_pci_suspend,
mei_me_pci_resume)
SET_RUNTIME_PM_OPS(