[ Upstream commit 74bb746407bf0d7c7d126c7731dbcd66d467619b ] The last resume result exposing logic in cros_ec_sleep_event() incorrectly requires S0ix support, which doesn't work on ARM based systems where S0ix doesn't exist. That's because cros_ec_sleep_event() only reports the last resume result when the EC indicates the last sleep event was an S0ix resume. On ARM systems, the last sleep event is always S3 resume, but the EC can still detect sleep hang events in case some other part of the AP is blocking sleep. Always expose the last resume result if the EC supports it so that this works on all devices regardless of S0ix support. This fixes sleep hang detection on ARM based chromebooks like Trogdor. Cc: Rajat Jain <rajatja@chromium.org> Cc: Matthias Kaehlcke <mka@chromium.org> Cc: Hsin-Yi Wang <hsinyi@chromium.org> Cc: Tzung-Bi Shih <tzungbi@kernel.org> Reviewed-by: Guenter Roeck <groeck@chromium.org> Reviewed-by: Evan Green <evgreen@chromium.org> Fixes: 7235560ac77a ("platform/chrome: Add support for v1 of host sleep event") Signed-off-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org> Link: https://lore.kernel.org/r/20220614075726.2729987-1-swboyd@chromium.org Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.
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