diff options
| author | Alexey Starikovskiy <astarikovskiy@suse.de> | 2007-11-15 02:00:39 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-11-15 03:45:44 +0100 |
| commit | 5bfeca3138a6031e38c566d57128ff592eb009a8 (patch) | |
| tree | 79746c927ba215dad3ed65f44bb378320b092992 /drivers/acpi/ac.c | |
| parent | make /proc/acpi/ac_adapter dependent on ACPI_PROCFS (diff) | |
| download | linux-5bfeca3138a6031e38c566d57128ff592eb009a8.tar.xz linux-5bfeca3138a6031e38c566d57128ff592eb009a8.zip | |
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.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c index 1461dc9944a3..30238f6ff232 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; |