From cedb7f89d1e1f631b7e5d920fe1ea7f742d07f79 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 20 Dec 2013 15:00:48 -0600 Subject: [PATCH] phy: core: properly handle failure of pm_runtime_get functions In case pm_runtime_get*() fails, it still increments pm usage counter, so we *must* make sure to pm_runtime_put() even in those cases. This patch fixes that mistake the same way usbcore treats those possible failures. Signed-off-by: Felipe Balbi Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-core.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 58e0e9739028..8797bb7d9c48 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -94,19 +94,31 @@ static struct phy_provider *of_phy_provider_lookup(struct device_node *node) int phy_pm_runtime_get(struct phy *phy) { + int ret; + if (!pm_runtime_enabled(&phy->dev)) return -ENOTSUPP; - return pm_runtime_get(&phy->dev); + ret = pm_runtime_get(&phy->dev); + if (ret < 0 && ret != -EINPROGRESS) + pm_runtime_put_noidle(&phy->dev); + + return ret; } EXPORT_SYMBOL_GPL(phy_pm_runtime_get); int phy_pm_runtime_get_sync(struct phy *phy) { + int ret; + if (!pm_runtime_enabled(&phy->dev)) return -ENOTSUPP; - return pm_runtime_get_sync(&phy->dev); + ret = pm_runtime_get_sync(&phy->dev); + if (ret < 0) + pm_runtime_put_sync(&phy->dev); + + return ret; } EXPORT_SYMBOL_GPL(phy_pm_runtime_get_sync);