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authorAlexey Starikovskiy <astarikovskiy@suse.de>2007-11-14 17:00:39 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-11-14 18:45:44 -0800
commit5bfeca3138a6031e38c566d57128ff592eb009a8 (patch)
tree79746c927ba215dad3ed65f44bb378320b092992 /drivers/acpi/ac.c
parent8a246ee43f4b1df3fa5cbf9c4a3d3dcad0b1e08c (diff)
ACPI: AC: Update AC state on resume
Check if AC state has changed across resume and notify userspace if so. Fixes "[2.6.24-rc1 regression] AC adapter state does not change after resume" Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Tested-by: Andrey Borzenkov <arvidjaar@mail.ru> Cc: Len Brown <lenb@kernel.org> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/acpi/ac.c')
-rw-r--r--drivers/acpi/ac.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 1461dc9944a..30238f6ff23 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -59,6 +59,7 @@ static int acpi_ac_open_fs(struct inode *inode, struct file *file);
static int acpi_ac_add(struct acpi_device *device);
static int acpi_ac_remove(struct acpi_device *device, int type);
+static int acpi_ac_resume(struct acpi_device *device);
const static struct acpi_device_id ac_device_ids[] = {
{"ACPI0003", 0},
@@ -73,6 +74,7 @@ static struct acpi_driver acpi_ac_driver = {
.ops = {
.add = acpi_ac_add,
.remove = acpi_ac_remove,
+ .resume = acpi_ac_resume,
},
};
@@ -307,6 +309,21 @@ static int acpi_ac_add(struct acpi_device *device)
return result;
}
+static int acpi_ac_resume(struct acpi_device *device)
+{
+ struct acpi_ac *ac;
+ unsigned old_state;
+ if (!device || !acpi_driver_data(device))
+ return -EINVAL;
+ ac = acpi_driver_data(device);
+ old_state = ac->state;
+ if (acpi_ac_get_state(ac))
+ return 0;
+ if (old_state != ac->state)
+ kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE);
+ return 0;
+}
+
static int acpi_ac_remove(struct acpi_device *device, int type)
{
acpi_status status = AE_OK;