Move xen patchset to new version's subdir.

[people/pmueller/ipfire-2.x.git] / src / patches / suse-2.6.27.31 / patches.arch / acpi-dock-don-t-eval-_sta-on-every-show_docked-sysfs-read.patch

diff --git a/src/patches/suse-2.6.27.31/patches.arch/acpi-dock-don-t-eval-_sta-on-every-show_docked-sysfs-read.patch b/src/patches/suse-2.6.27.31/patches.arch/acpi-dock-don-t-eval-_sta-on-every-show_docked-sysfs-read.patch
new file mode 100644 (file)
index 0000000..f1c4f9b
--- /dev/null
+++ b/src/patches/suse-2.6.27.31/patches.arch/acpi-dock-don-t-eval-_sta-on-every-show_docked-sysfs-read.patch
@@ -0,0 +1,47 @@
+From 1d672ef324e78a467603ef55aa4558cac9f895ba Mon Sep 17 00:00:00 2001
+From: Holger Macht <hmacht@suse.de>
+Date: Tue, 20 Jan 2009 12:18:24 +0100
+Subject: ACPI: dock: Don't eval _STA on every show_docked sysfs read
+
+From: Holger Macht <hmacht@suse.de>
+
+commit fc5a9f8841ee87d93376ada5d73117d4d6a373ea upstream.
+
+Some devices trigger a DEVICE_CHECK on every evalutation of _STA. This
+can also be seen in commit 8b59560a3baf2e7c24e0fb92ea5d09eca92805db
+(ACPI: dock: avoid check _STA method).  If an undock is processed, the
+dock driver sends a uevent and userspace might read the show_docked
+property in sysfs. This causes an evaluation of _STA of the particular
+device which causes the dock driver to immediately dock again.
+
+In any case, evaluation of _STA (show_docked) does not necessarily mean
+that we are docked, so check with the internal device structure.
+
+http://bugzilla.kernel.org/show_bug.cgi?id=12360
+
+Signed-off-by: Holger Macht <hmacht@suse.de>
+Signed-off-by: Len Brown <len.brown@intel.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
+
+---
+ drivers/acpi/dock.c |    8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+--- a/drivers/acpi/dock.c
++++ b/drivers/acpi/dock.c
+@@ -854,8 +854,14 @@ fdd_out:
+ static ssize_t show_docked(struct device *dev,
+                          struct device_attribute *attr, char *buf)
+ {
+-      return snprintf(buf, PAGE_SIZE, "%d\n", dock_present(dock_station));
++      struct acpi_device *tmp;
+ 
++      struct dock_station *dock_station = *((struct dock_station **)
++              dev->platform_data);
++
++      if (ACPI_SUCCESS(acpi_bus_get_device(dock_station->handle, &tmp)))
++              return snprintf(buf, PAGE_SIZE, "1\n");
++      return snprintf(buf, PAGE_SIZE, "0\n");
+ }
+ static DEVICE_ATTR(docked, S_IRUGO, show_docked, NULL);
+