ACPI: EC: Don't init EC early if it has no _INI

PATCH New Alexey Starikovskiy 1 participant 1 message Nov 3, 2007 ACPI

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Alexey Starikovskiy

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2007-11-03 10:13 UTC #0 lore raw

PATCH 1/1 ACPI: EC: Don't init EC early if it has no _INI

Option to init EC early inserted to handle #8598 ASUS problem, introduced several others.
EC driver in this particular case has fake _INI method, not present on other machines, which don't need or break from this workaround, so lets use its presence as a flag for early init.

Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9262
Reference: http://bugzilla.kernel.org/show_bug.cgi?id=8598
Reference: https://bugzilla.novell.com/show_bug.cgi?id=334806

Signed-off-by Alexey Starikovskiy <[email protected]>

---

 drivers/acpi/ec.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

drivers/acpi/ec.c +3 -0

index 06b78e5..d4dc38f 100644
@@ -881,12 +881,15 @@ int __init acpi_ec_ecdt_probe(void)
 		boot_ec->gpe = ecdt_ptr->gpe;
 		boot_ec->handle = ACPI_ROOT_OBJECT;
 	} else {
+		acpi_handle x;
 		printk(KERN_DEBUG PREFIX "Look up EC in DSDT\n");
 		status = acpi_get_devices(ec_device_ids[0].id, ec_parse_device,
 						boot_ec, NULL);
 		/* Check that acpi_get_devices actually find something */
 		if (ACPI_FAILURE(status) || !boot_ec->handle)
 			goto error;
+		if (ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI", &x)))
+			goto error;
 	}
 
 	ret = ec_install_handlers(boot_ec);