[ Upstream commit c4bd7f1d78340e63de4d073fd3dbe5391e2996e5 ]
If an error code other than EINVAL, ENODEV or ETIME is returned
by acpi_ec_read() / acpi_ec_write(), then AE_OK is incorrectly
returned by acpi_ec_space_handler().
Fix this by only returning AE_OK on success, and return AE_ERROR
otherwise.
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit f6f172dc6a6d7775b2df6adfd1350700e9a847ec ]
When a multi-byte address space access is requested, acpi_ec_read()/
acpi_ec_write() is being called multiple times.
Abort such operations if a single call to acpi_ec_read() /
acpi_ec_write() fails, as the data read from / written to the EC
might be incomplete.
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
