PCI: PM: Enable PME if it can be signaled from D3cold
stable inclusion from linux-4.19.207 commit d4bcd29b50d1a33111d3bacd7974f0d0bbec484f -------------------------------- [ Upstream commit 0e00392a ] PME signaling is only enabled by __pci_enable_wake() if the target device can signal PME from the given target power state (to avoid pointless reconfiguration of the device), but if the hierarchy above the device goes into D3cold, the device itself will end up in D3cold too, so if it can signal PME from D3cold, it should be enabled to do so in __pci_enable_wake(). [Note that if the device does not end up in D3cold and it cannot signal PME from the original target power state, it will not signal PME, so in that case the behavior does not change.] Link: https://lore.kernel.org/linux-pm/3149540.aeNJFYEL58@kreacher/ Fixes: 5bcc2fb4 ("PCI PM: Simplify PCI wake-up code") Reported-by: NMika Westerberg <mika.westerberg@linux.intel.com> Reported-by: NUtkarsh H Patel <utkarsh.h.patel@intel.com> Reported-by: NKoba Ko <koba.ko@canonical.com> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: NMika Westerberg <mika.westerberg@linux.intel.com> Tested-by: NMika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: NSasha Levin <sashal@kernel.org> Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Showing
想要评论请 注册 或 登录