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authorLen Brown <len.brown@intel.com>2009-12-30 02:51:01 -0500
committerLen Brown <len.brown@intel.com>2009-12-30 02:51:01 -0500
commit1ae22af7d750fbf665b7651fcbd3c15cc2d3793b (patch)
treeb1d7da8679c6730fdc98d531d544743f23d26c9f /drivers
parent27d0567ab635bc2af11be48f91c8d5a7a2dca2e4 (diff)
parentd1f9e4970742bb1e22d07b01bd44f9c357d25c42 (diff)
Merge branch 'wmi' into release
Diffstat (limited to 'drivers')
-rw-r--r--drivers/platform/x86/dell-wmi.c18
-rw-r--r--drivers/platform/x86/hp-wmi.c9
-rw-r--r--drivers/platform/x86/msi-wmi.c9
-rw-r--r--drivers/platform/x86/wmi.c36
4 files changed, 58 insertions, 14 deletions
diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c
index 916ccb2b316..1b1dddbd574 100644
--- a/drivers/platform/x86/dell-wmi.c
+++ b/drivers/platform/x86/dell-wmi.c
@@ -202,8 +202,13 @@ static void dell_wmi_notify(u32 value, void *context)
struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
static struct key_entry *key;
union acpi_object *obj;
+ acpi_status status;
- wmi_get_event_data(value, &response);
+ status = wmi_get_event_data(value, &response);
+ if (status != AE_OK) {
+ printk(KERN_INFO "dell-wmi: bad event status 0x%x\n", status);
+ return;
+ }
obj = (union acpi_object *)response.pointer;
@@ -323,8 +328,9 @@ static int __init dell_wmi_input_setup(void)
static int __init dell_wmi_init(void)
{
int err;
+ acpi_status status;
- if (wmi_has_guid(DELL_EVENT_GUID)) {
+ if (!wmi_has_guid(DELL_EVENT_GUID)) {
printk(KERN_WARNING "dell-wmi: No known WMI GUID found\n");
return -ENODEV;
}
@@ -336,14 +342,14 @@ static int __init dell_wmi_init(void)
if (err)
return err;
- err = wmi_install_notify_handler(DELL_EVENT_GUID,
+ status = wmi_install_notify_handler(DELL_EVENT_GUID,
dell_wmi_notify, NULL);
- if (err) {
+ if (ACPI_FAILURE(status)) {
input_unregister_device(dell_wmi_input_dev);
printk(KERN_ERR
"dell-wmi: Unable to register notify handler - %d\n",
- err);
- return err;
+ status);
+ return -ENODEV;
}
return 0;
diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
index 8781d8fa7a5..5b648f0c607 100644
--- a/drivers/platform/x86/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
@@ -338,8 +338,13 @@ static void hp_wmi_notify(u32 value, void *context)
static struct key_entry *key;
union acpi_object *obj;
int eventcode;
+ acpi_status status;
- wmi_get_event_data(value, &response);
+ status = wmi_get_event_data(value, &response);
+ if (status != AE_OK) {
+ printk(KERN_INFO "hp-wmi: bad event status 0x%x\n", status);
+ return;
+ }
obj = (union acpi_object *)response.pointer;
@@ -581,7 +586,7 @@ static int __init hp_wmi_init(void)
if (wmi_has_guid(HPWMI_EVENT_GUID)) {
err = wmi_install_notify_handler(HPWMI_EVENT_GUID,
hp_wmi_notify, NULL);
- if (!err)
+ if (ACPI_SUCCESS(err))
hp_wmi_input_setup();
}
diff --git a/drivers/platform/x86/msi-wmi.c b/drivers/platform/x86/msi-wmi.c
index 7f77f908bb0..f5f70d4c691 100644
--- a/drivers/platform/x86/msi-wmi.c
+++ b/drivers/platform/x86/msi-wmi.c
@@ -149,8 +149,13 @@ static void msi_wmi_notify(u32 value, void *context)
static struct key_entry *key;
union acpi_object *obj;
ktime_t cur;
+ acpi_status status;
- wmi_get_event_data(value, &response);
+ status = wmi_get_event_data(value, &response);
+ if (status != AE_OK) {
+ printk(KERN_INFO DRV_PFX "bad event status 0x%x\n", status);
+ return;
+ }
obj = (union acpi_object *)response.pointer;
@@ -236,7 +241,7 @@ static int __init msi_wmi_init(void)
}
err = wmi_install_notify_handler(MSIWMI_EVENT_GUID,
msi_wmi_notify, NULL);
- if (err)
+ if (ACPI_FAILURE(err))
return -EINVAL;
err = msi_wmi_input_setup();
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 9f93d6c0f51..b104302fea0 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -492,8 +492,7 @@ wmi_notify_handler handler, void *data)
if (!guid || !handler)
return AE_BAD_PARAMETER;
- find_guid(guid, &block);
- if (!block)
+ if (!find_guid(guid, &block))
return AE_NOT_EXIST;
if (block->handler)
@@ -521,8 +520,7 @@ acpi_status wmi_remove_notify_handler(const char *guid)
if (!guid)
return AE_BAD_PARAMETER;
- find_guid(guid, &block);
- if (!block)
+ if (!find_guid(guid, &block))
return AE_NOT_EXIST;
if (!block->handler)
@@ -716,6 +714,22 @@ static int wmi_class_init(void)
return ret;
}
+static bool guid_already_parsed(const char *guid_string)
+{
+ struct guid_block *gblock;
+ struct wmi_block *wblock;
+ struct list_head *p;
+
+ list_for_each(p, &wmi_blocks.list) {
+ wblock = list_entry(p, struct wmi_block, list);
+ gblock = &wblock->gblock;
+
+ if (strncmp(gblock->guid, guid_string, 16) == 0)
+ return true;
+ }
+ return false;
+}
+
/*
* Parse the _WDG method for the GUID data blocks
*/
@@ -725,6 +739,7 @@ static __init acpi_status parse_wdg(acpi_handle handle)
union acpi_object *obj;
struct guid_block *gblock;
struct wmi_block *wblock;
+ char guid_string[37];
acpi_status status;
u32 i, total;
@@ -747,6 +762,19 @@ static __init acpi_status parse_wdg(acpi_handle handle)
memcpy(gblock, obj->buffer.pointer, obj->buffer.length);
for (i = 0; i < total; i++) {
+ /*
+ Some WMI devices, like those for nVidia hooks, have a
+ duplicate GUID. It's not clear what we should do in this
+ case yet, so for now, we'll just ignore the duplicate.
+ Anyone who wants to add support for that device can come
+ up with a better workaround for the mess then.
+ */
+ if (guid_already_parsed(gblock[i].guid) == true) {
+ wmi_gtoa(gblock[i].guid, guid_string);
+ printk(KERN_INFO PREFIX "Skipping duplicate GUID %s\n",
+ guid_string);
+ continue;
+ }
wblock = kzalloc(sizeof(struct wmi_block), GFP_KERNEL);
if (!wblock)
return AE_NO_MEMORY;