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| author | Sasha Levin <sashal@kernel.org> | 2020-07-17 12:36:52 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-22 09:10:04 +0200 |
| commit | 849bafb50c781733d0b26651bee6cc96c6e96c64 (patch) | |
| tree | bc9cc51e29b0e311b8abcf417c099c26f97f288e /drivers/usb/host | |
| parent | bce246555deeb44b1d9b0f732f2298bdcb54d96e (diff) | |
Revert "usb/ehci-platform: Set PM runtime as active on resume"
This reverts commit 13af14dfadcb95030dc8e2e0cacbffc1990a9772.
Eugeniu Rosca writes:
On Thu, Jul 09, 2020 at 09:00:23AM +0200, Eugeniu Rosca wrote:
>After integrating v4.14.186 commit 5410d158ca2a50 ("usb/ehci-platform:
>Set PM runtime as active on resume") into downstream v4.14.x, we started
>to consistently experience below panic [1] on every second s2ram of
>R-Car H3 Salvator-X Renesas reference board.
>
>After some investigations, we concluded the following:
> - the issue does not exist in vanilla v5.8-rc4+
> - [bisecting shows that] the panic on v4.14.186 is caused by the lack
> of v5.6-rc1 commit 987351e1ea7772 ("phy: core: Add consumer device
> link support"). Getting evidence for that is easy. Reverting
> 987351e1ea7772 in vanilla leads to a similar backtrace [2].
>
>Questions:
> - Backporting 987351e1ea7772 ("phy: core: Add consumer device
> link support") to v4.14.187 looks challenging enough, so probably not
> worth it. Anybody to contradict this?
> - Assuming no plans to backport the missing mainline commit to v4.14.x,
> should the following three v4.14.186 commits be reverted on v4.14.x?
> * baef809ea497a4 ("usb/ohci-platform: Fix a warning when hibernating")
> * 9f33eff4958885 ("usb/xhci-plat: Set PM runtime as active on resume")
> * 5410d158ca2a50 ("usb/ehci-platform: Set PM runtime as active on resume")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/ehci-platform.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index 56200650b46b..bd7082f297bb 100644 --- a/drivers/usb/host/ehci-platform.c +++ b/drivers/usb/host/ehci-platform.c @@ -375,11 +375,6 @@ static int ehci_platform_resume(struct device *dev) } ehci_resume(hcd, priv->reset_on_resume); - - pm_runtime_disable(dev); - pm_runtime_set_active(dev); - pm_runtime_enable(dev); - return 0; } #endif /* CONFIG_PM_SLEEP */ |