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Loic Poulain
cab2d3fd68
For whatever reason, some devices like QCA6390, WCN6855 using ath11k
are not in M3 state during PM resume, but still functional. The
mhi_pm_resume should then not fail in those cases, and let the higher
level device specific stack continue resuming process.
Add an API mhi_pm_resume_force(), to force resuming irrespective of the
current MHI state. This fixes a regression with non functional ath11k WiFi
after suspend/resume cycle on some machines.
Bug report: https://bugzilla.kernel.org/show_bug.cgi?id=214179
Link: https://lore.kernel.org/regressions/[email protected]/
Fixes: 020d3b26c0 ("bus: mhi: Early MHI resume failure in non M3 state")
Cc: [email protected] #5.13
Reported-by: Kalle Valo <[email protected]>
Reported-by: Pengyu Ma <[email protected]>
Tested-by: Kalle Valo <[email protected]>
Acked-by: Kalle Valo <[email protected]>
Signed-off-by: Loic Poulain <[email protected]>
[mani: Switched to API, added bug report, reported-by tags and CCed stable]
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>