ACPI / EC: Cleanup first_ec/boot_ec code

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In order to support full ECDT (driving the ECDT EC after probing the
namespace EC), we need to change our EC device alloc/free algorithm, ensure
not to free old boot EC before qualifying new boot EC.
This patch achieves this by cleaning up first_ec/boot_ec logic:
1. first_ec: used to perform transactions, so it is assigned in new
   acpi_ec_setup() function.
2. boot_ec: used to track early EC device, so it is assigned in new
   acpi_config_boot_ec() function which explictly tells the driver to save
   the EC device as early EC device.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=115021
Reported-and-tested-by: Luya Tshimbalanga <luya@fedoraproject.org>
Tested-by: Jonh Henderson <jw.hendy@gmail.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Lv Zheng 2016-09-07 16:50:08 +08:00 • committed by Rafael J. Wysocki

parent d30283057e

commit 72c77b7ea9

1 changed files with 63 additions and 33 deletions

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drivers/acpi/ec.c

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