Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5870a8cd23181703cc76f88f630372f8602c7648
Commit: 5870a8cd23181703cc76f88f630372f8602c7648
Parent: 2ffbb8377c7a0713baf6644e285adc27a5654582
Author: Alexey Starikovskiy <[EMAIL PROTECTED]>
AuthorDate: Thu Nov 15 21:52:47 2007 +0300
Committer: Len Brown <[EMAIL PROTECTED]>
CommitDate: Mon Nov 19 12:20:48 2007 -0500
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.
http://bugzilla.kernel.org/show_bug.cgi?id=9262
http://bugzilla.kernel.org/show_bug.cgi?id=8598
https://bugzilla.novell.com/show_bug.cgi?id=334806
Signed-off-by: Alexey Starikovskiy <[EMAIL PROTECTED]>
Signed-off-by: Len Brown <[EMAIL PROTECTED]>
---
drivers/acpi/ec.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 06b78e5..56afe13 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -881,12 +881,20 @@ int __init acpi_ec_ecdt_probe(void)
boot_ec->gpe = ecdt_ptr->gpe;
boot_ec->handle = ACPI_ROOT_OBJECT;
} else {
+ /* This workaround is needed only on some broken machines,
+ * which require early EC, but fail to provide ECDT */
+ 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;
+ /* We really need to limit this workaround, the only ASUS,
+ * which needs it, has fake EC._INI method, so use it as flag.
+ */
+ if (ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI", &x)))
+ goto error;
}
ret = ec_install_handlers(boot_ec);
-
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