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net: wwan: t7xx: Fix Runtime PM initialization
For PCI devices the Runtime PM refcount is incremented twice:
1. During device enumeration with a call to pm_runtime_forbid.
2. Just before a driver probe logic is called.
Because of that in order to enable Runtime PM on a given device
we have to call both pm_runtime_allow and pm_runtime_put_noidle,
once it's ready to be runtime suspended.
The former was missing causing the pm refcount to never reach 0.
Fixes: d10b3a695b
("net: wwan: t7xx: Runtime PM")
Signed-off-by: Kornel Dulęba <mindal@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -121,6 +121,8 @@ void t7xx_pci_pm_init_late(struct t7xx_pci_dev *t7xx_dev)
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iowrite32(T7XX_L1_BIT(0), IREG_BASE(t7xx_dev) + ENABLE_ASPM_LOWPWR);
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atomic_set(&t7xx_dev->md_pm_state, MTK_PM_RESUMED);
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pm_runtime_mark_last_busy(&t7xx_dev->pdev->dev);
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pm_runtime_allow(&t7xx_dev->pdev->dev);
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pm_runtime_put_noidle(&t7xx_dev->pdev->dev);
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}
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