diff options
| author |   Zhang Rui <rui.zhang@intel.com> | 2007-08-25 02:23:31 -0400 |
|---|---|---|
| committer |   Len Brown <len.brown@intel.com> | 2007-08-25 02:23:31 -0400 |
| commit | e6d9da1de0f31c57cfe3837b1b4e51c6d96fcd3c (patch) | |
| tree | 51191b8b9b706f424bcadaadf02261caf80a9d2a | |
| parent | Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev (diff) | |
| download | linux-dev-e6d9da1de0f31c57cfe3837b1b4e51c6d96fcd3c.tar.xz linux-dev-e6d9da1de0f31c57cfe3837b1b4e51c6d96fcd3c.zip | |
ACPI: work around duplicate name "VID" problem on T61
This can only fix the problem that more than one video bus device
have the same AML name "VID".
ie. the proc I/F for the second "VID" video bus device is located under
/proc/acpi/video/VID1/...
As this is really rare and the ACPI proc I/F is a legacy feature that
we are planning to remove.
We won't provide a generic solution for this problem.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
| -rw-r--r-- | drivers/acpi/video.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index d98701941981..ac63be4e8197 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -1833,6 +1833,7 @@ static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data) return; } +static int instance; static int acpi_video_bus_add(struct acpi_device *device) { int result = 0; @@ -1847,6 +1848,13 @@ static int acpi_video_bus_add(struct acpi_device *device) if (!video) return -ENOMEM; + /* a hack to fix the duplicate name "VID" problem on T61 */ + if (!strcmp(device->pnp.bus_id, "VID")) { + if (instance) + device->pnp.bus_id[3] = '0' + instance; + instance ++; + } + video->device = device; strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); |