On Wed, Feb 05, 2025 at 02:44:43PM +0100, Greg Kroah-Hartman wrote:
6.13-stable review patch. If anyone has any objections, please let me know.
From: Rafael J. Wysocki rafael.j.wysocki@intel.com
[ Upstream commit 3775fc538f535a7c5adaf11990c7932a0bd1f9eb ]
Commit 6e176bf8d461 ("PM: sleep: core: Do not skip callbacks in the resume phase") overlooked the case in which the parent of a device with DPM_FLAG_SMART_SUSPEND set did not use that flag and could be runtime- suspended before a transition into a system-wide sleep state. In that case, if the child is resumed during the subsequent transition from that state into the working state, its runtime PM status will be set to RPM_ACTIVE, but the runtime PM status of the parent will not be updated accordingly, even though the parent will be resumed too, because of the dev_pm_skip_suspend() check in device_resume_noirq().
Address this problem by tracking the need to set the runtime PM status to RPM_ACTIVE during system-wide resume transitions for devices with DPM_FLAG_SMART_SUSPEND set and all of the devices depended on by them.
Fixes: 6e176bf8d461 ("PM: sleep: core: Do not skip callbacks in the resume phase") Closes: https://lore.kernel.org/linux-pm/Z30p2Etwf3F2AUvD@hovoldconsulting.com/ Reported-by: Johan Hovold johan@kernel.org Tested-by: Manivannan Sadhasivam manivannan.sadhasivam@linaro.org Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Reviewed-by: Johan Hovold johan+linaro@kernel.org Tested-by: Johan Hovold johan+linaro@kernel.org Link: https://patch.msgid.link/12619233.O9o76ZdvQC@rjwysocki.net Signed-off-by: Sasha Levin sashal@kernel.org
This patch appears to be causing trouble and should not be backported, at least not until this has been resolved:
https://lore.kernel.org/all/1c2433d4-7e0f-4395-b841-b8eac7c25651@nvidia.com/
Please drop from all stable queues.
Johan