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path: root/drivers/platform/x86/asus_acpi.c
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Diffstat (limited to 'drivers/platform/x86/asus_acpi.c')
-rw-r--r--drivers/platform/x86/asus_acpi.c30
1 files changed, 13 insertions, 17 deletions
diff --git a/drivers/platform/x86/asus_acpi.c b/drivers/platform/x86/asus_acpi.c
index ba1f7497e4b..ddf5240ade8 100644
--- a/drivers/platform/x86/asus_acpi.c
+++ b/drivers/platform/x86/asus_acpi.c
@@ -455,6 +455,8 @@ static struct asus_hotk *hotk;
*/
static int asus_hotk_add(struct acpi_device *device);
static int asus_hotk_remove(struct acpi_device *device, int type);
+static void asus_hotk_notify(struct acpi_device *device, u32 event);
+
static const struct acpi_device_id asus_device_ids[] = {
{"ATK0100", 0},
{"", 0},
@@ -465,9 +467,11 @@ static struct acpi_driver asus_hotk_driver = {
.name = "asus_acpi",
.class = ACPI_HOTK_CLASS,
.ids = asus_device_ids,
+ .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
.ops = {
.add = asus_hotk_add,
.remove = asus_hotk_remove,
+ .notify = asus_hotk_notify,
},
};
@@ -1101,12 +1105,20 @@ static int asus_hotk_remove_fs(struct acpi_device *device)
return 0;
}
-static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
+static void asus_hotk_notify(struct acpi_device *device, u32 event)
{
/* TODO Find a better way to handle events count. */
if (!hotk)
return;
+ /*
+ * The BIOS *should* be sending us device events, but apparently
+ * Asus uses system events instead, so just ignore any device
+ * events we get.
+ */
+ if (event > ACPI_MAX_SYS_NOTIFY)
+ return;
+
if ((event & ~((u32) BR_UP)) < 16)
hotk->brightness = (event & ~((u32) BR_UP));
else if ((event & ~((u32) BR_DOWN)) < 16)
@@ -1346,15 +1358,6 @@ static int asus_hotk_add(struct acpi_device *device)
if (result)
goto end;
- /*
- * We install the handler, it will receive the hotk in parameter, so, we
- * could add other data to the hotk struct
- */
- status = acpi_install_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY,
- asus_hotk_notify, hotk);
- if (ACPI_FAILURE(status))
- printk(KERN_ERR " Error installing notify handler\n");
-
/* For laptops without GPLV: init the hotk->brightness value */
if ((!hotk->methods->brightness_get)
&& (!hotk->methods->brightness_status)
@@ -1389,16 +1392,9 @@ end:
static int asus_hotk_remove(struct acpi_device *device, int type)
{
- acpi_status status = 0;
-
if (!device || !acpi_driver_data(device))
return -EINVAL;
- status = acpi_remove_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY,
- asus_hotk_notify);
- if (ACPI_FAILURE(status))
- printk(KERN_ERR "Asus ACPI: Error removing notify handler\n");
-
asus_hotk_remove_fs(device);
kfree(hotk);