USB: core: Disable remote wakeup for freeze/quiesce
authorEvan Green <evgreen@chromium.org>
Thu, 21 Apr 2022 17:39:26 +0000 (10:39 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 23 Apr 2022 08:33:52 +0000 (10:33 +0200)
commit9671d55037065e9b83f84f1943bf65fc31036439
treead2ec34b142c6e89607d553760601a154c9a681b
parenta03e2ddab8e735e2cc315609b297b300e9cc60d2
USB: core: Disable remote wakeup for freeze/quiesce

The PM_EVENT_FREEZE and PM_EVENT_QUIESCE messages should cause the
device to stop generating interrupts. USB core was previously allowing
devices that were already runtime suspended to keep remote wakeup
enabled if they had gone down that way. This violates the contract with
pm, and can potentially cause MSI interrupts to be lost.

Change that so that if a device is runtime suspended with remote wakeups
enabled, it will be resumed to ensure remote wakeup is always disabled
across a freeze.

Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Evan Green <evgreen@chromium.org>
Link: https://lore.kernel.org/r/20220421103751.v3.1.I2c636c4decc358f5e6c27b810748904cc69beada@changeid
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/core/driver.c