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| author | Kornel Dulęba <mindal@semihalf.com> | 2023-01-26 13:25:35 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-01-28 13:20:21 +0000 |
| commit | e3d6d152a1cbdee25f2e3962009a2751b54e2297 (patch) | |
| tree | ac547964f725388e0ce9e873b6fbd6aea94a7be1 | |
| parent | 364d0221f1788e5225006ba7a0026e5968431c29 (diff) | |
| download | linux-stable-e3d6d152a1cbdee25f2e3962009a2751b54e2297.tar.gz linux-stable-e3d6d152a1cbdee25f2e3962009a2751b54e2297.tar.bz2 linux-stable-e3d6d152a1cbdee25f2e3962009a2751b54e2297.zip | |
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: d10b3a695ba0 ("net: wwan: t7xx: Runtime PM")
Signed-off-by: Kornel Dulęba <mindal@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/wwan/t7xx/t7xx_pci.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/wwan/t7xx/t7xx_pci.c b/drivers/net/wwan/t7xx/t7xx_pci.c index 871f2a27a398..226fc1703e90 100644 --- a/drivers/net/wwan/t7xx/t7xx_pci.c +++ b/drivers/net/wwan/t7xx/t7xx_pci.c @@ -121,6 +121,8 @@ void t7xx_pci_pm_init_late(struct t7xx_pci_dev *t7xx_dev) iowrite32(T7XX_L1_BIT(0), IREG_BASE(t7xx_dev) + ENABLE_ASPM_LOWPWR); atomic_set(&t7xx_dev->md_pm_state, MTK_PM_RESUMED); + pm_runtime_mark_last_busy(&t7xx_dev->pdev->dev); + pm_runtime_allow(&t7xx_dev->pdev->dev); pm_runtime_put_noidle(&t7xx_dev->pdev->dev); } |