• Sasha Levin's avatar
    Revert "usb/xhci-plat: Set PM runtime as active on resume" · 7c201182
    Sasha Levin authored
    This reverts commit 661f5686.
    
    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 987351e1 ("phy: core: Add consumer device
    >   link support"). Getting evidence for that is easy. Reverting
    >   987351e1 in vanilla leads to a similar backtrace [2].
    >
    >Questions:
    > - Backporting 987351e1 ("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: default avatarSasha Levin <sashal@kernel.org>
    7c201182
xhci-plat.c 11.3 KB