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Date: Tue, 8 Mar 2016 16:29:08 -0800 From: Kamal Mostafa <kamal@...onical.com> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org, kernel-team@...ts.ubuntu.com Cc: Roger Quadros <rogerq@...com>, Axel Lin <axel.lin@...ics.com>, Shawn Lin <shawn.lin@...k-chips.com>, Kishon Vijay Abraham I <kishon@...com>, Kamal Mostafa <kamal@...onical.com> Subject: [PATCH 3.19.y-ckt 090/196] phy: core: fix wrong err handle for phy_power_on 3.19.8-ckt16 -stable review patch. If anyone has any objections, please let me know. ---8<------------------------------------------------------------ From: Shawn Lin <shawn.lin@...k-chips.com> commit b82fcabe212a11698fd4b3e604d2f81d929d22f6 upstream. If phy_pm_runtime_get_sync failed but we already enable regulator, current code return directly without doing regulator_disable. This patch fix this problem and cleanup err handle of phy_power_on to be more readable. Fixes: 3be88125d85d ("phy: core: Support regulator ...") Cc: Roger Quadros <rogerq@...com> Cc: Axel Lin <axel.lin@...ics.com> Signed-off-by: Shawn Lin <shawn.lin@...k-chips.com> Signed-off-by: Kishon Vijay Abraham I <kishon@...com> Signed-off-by: Kamal Mostafa <kamal@...onical.com> --- drivers/phy/phy-core.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 3791838..87a50c3 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -275,20 +275,21 @@ EXPORT_SYMBOL_GPL(phy_exit); int phy_power_on(struct phy *phy) { - int ret; + int ret = 0; if (!phy) - return 0; + goto out; if (phy->pwr) { ret = regulator_enable(phy->pwr); if (ret) - return ret; + goto out; } ret = phy_pm_runtime_get_sync(phy); if (ret < 0 && ret != -ENOTSUPP) - return ret; + goto err_pm_sync; + ret = 0; /* Override possible ret == -ENOTSUPP */ mutex_lock(&phy->mutex); @@ -296,19 +297,20 @@ int phy_power_on(struct phy *phy) ret = phy->ops->power_on(phy); if (ret < 0) { dev_err(&phy->dev, "phy poweron failed --> %d\n", ret); - goto out; + goto err_pwr_on; } } ++phy->power_count; mutex_unlock(&phy->mutex); return 0; -out: +err_pwr_on: mutex_unlock(&phy->mutex); phy_pm_runtime_put_sync(phy); +err_pm_sync: if (phy->pwr) regulator_disable(phy->pwr); - +out: return ret; } EXPORT_SYMBOL_GPL(phy_power_on); -- 2.7.0
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