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usb: ehci-omap: Fix PM disable depth umbalance in ehci_hcd_omap_probe

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[ Upstream commit d6ff32478d7e95d6ca199b5c852710d6964d5811 ]

The pm_runtime_enable will decrement the power disable depth. Imbalance
depth will resulted in enabling runtime PM of device fails later.  Thus
a pairing decrement must be needed on the error handling path to keep it
balanced.

Fixes: 6c984b066d84b ("ARM: OMAP: USBHOST: Replace usbhs core driver APIs by Runtime pm APIs")
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201123145719.1455849-1-zhangqilong3@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zhang Qilong 2020-11-23 22:57:19 +08:00 committed by Greg Kroah-Hartman
parent 3f72486cec
commit 2addd72608
1 changed files with 1 additions and 0 deletions
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drivers/usb/host/ehci-omap.c
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@ -220,6 +220,7 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
err_pm_runtime:
pm_runtime_put_sync(dev);
pm_runtime_disable(dev);
err_phy:
for (i = 0; i < omap->nports; i++) {