This is a note to let you know that I've just added the patch titled
Revert "ACPI / scan: do not match drivers against objects having scan handlers"
to the 3.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
revert-acpi-scan-do-not-match-drivers-against-objects-having-scan-handlers.patch
and it can be found in the queue-3.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ea7f665612fcc73da6b7698f468cd5fc03a30d47 Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
Date: Sat, 8 Jun 2013 02:55:07 +0200
Subject: Revert "ACPI / scan: do not match drivers against objects having scan handlers"
From: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
commit ea7f665612fcc73da6b7698f468cd5fc03a30d47 upstream.
Commit 9f29ab11ddbf ("ACPI / scan: do not match drivers against objects
having scan handlers") introduced a boot regression on Tony's ia64 HP
rx2600. Tony says:
"It panics with the message:
Kernel panic - not syncing: Unable to find SBA IOMMU: Try a generic or DIG kernel
[...] my problem comes from arch/ia64/hp/common/sba_iommu.c
where the code in sba_init() says:
acpi_bus_register_driver(&acpi_sba_ioc_driver);
if (!ioc_list) {
but because of this change we never managed to call ioc_init()
so ioc_list doesn't get set up, and we die."
Revert it to avoid this breakage and we'll fix the problem it attempted
to address later.
Reported-by: Tony Luck <tony.luck@xxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/acpi/scan.c | 4 ----
1 file changed, 4 deletions(-)
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -553,10 +553,6 @@ static int acpi_bus_match(struct device
struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_driver *acpi_drv = to_acpi_driver(drv);
- /* Skip ACPI device objects with scan handlers attached. */
- if (acpi_dev->handler)
- return 0;
-
return acpi_dev->flags.match_driver
&& !acpi_match_device_ids(acpi_dev, acpi_drv->ids);
}
Patches currently in stable-queue which might be from rafael.j.wysocki@xxxxxxxxx are
queue-3.9/acpi-video-ignore-bios-initial-backlight-value-for-hp-pavilion-g6.patch
queue-3.9/revert-acpi-scan-do-not-match-drivers-against-objects-having-scan-handlers.patch
queue-3.9/acpi-scan-do-not-match-drivers-against-objects-having-scan-handlers.patch
queue-3.9/acpi-cpufreq-set-current-frequency-based-on-target-p-state.patch
queue-3.9/acpi-pm-do-not-execute-_ps0-for-devices-without-_psc-during-initialization.patch
queue-3.9/acpi-video-ignore-bios-initial-backlight-value-for-hp-m4.patch
queue-3.9/x86-platform-hp_wmi-fix-bluetooth_rfkill-misuse-in-hp_wmi_rfkill_setup.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html