Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ae56c9fd authored by Lv Zheng's avatar Lv Zheng Committed by Rafael J. Wysocki
Browse files

ACPI / EC: Enhance boot EC sanity check 

It's reported that some buggy BIOS tables can contain 2 DSDT ECs, one of
them is invalid but acpi_ec_dsdt_probe() fails to pick the valid one.
This patch simply enhances sanity checks in ec_parse_device() as a
workaround to skip probing wrong namespace ECs.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=195651


Tested-by: default avatarDaniel Drake <drake@endlessm.com>
Signed-off-by: default avatarLv Zheng <lv.zheng@intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 4625d752

drivers/acpi/ec.c

+2 −0
Original line number Diff line number Diff line
@@ -1363,6 +1363,8 @@ ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval) 
				     ec_parse_io_ports, ec);

	if (ACPI_FAILURE(status))

		return status;

	if (ec->data_addr == 0 || ec->command_addr == 0)

		return AE_OK;



	/* Get GPE bit assignment (EC events). */

	/* TODO: Add support for _GPE returning a package */