ACPI: EC: Ignore ECDT tables with an invalid ID string

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On the MSI Modern 14 C5M the ECDT table contains invalid data:

	UID : 00000000
 GPE Number : 00	/* Invalid, 03 would be correct */
   Namepath : ""	/* Invalid, "\_SB.PCI0.SBRG.EC" would
			 * be correct
			 */

This slows down the EC access as the wrong GPE event is used for
communication. Additionally the ID string is invalid.

Ignore such faulty ECDT tables by verifying that the ID string has
a valid format.

Tested-by: glpnk@proton.me
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20250529235310.540530-1-W_Armin@gmx.de
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

...

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Armin Wolf 2025-05-30 01:53:10 +02:00 • committed by Rafael J. Wysocki

parent 19272b37aa

commit 7a0d59f6a9

1 changed files with 17 additions and 0 deletions

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drivers/acpi/ec.c

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