On Mon, 2007-10-15 at 17:48 +0100, Matthew Garrett wrote: > Why not just call acpi_get_pyhsical_device() on the appropriate handle > and look at the struct device you get back? Remember to put_device() it > once you're done.
Yep, works great. I should have asked earlier for such a thing... Len can you apply this one, pls. Thanks, Thomas Recent Lenovo ThinkPads define a dummy grahpics device, ignore it. Signed-off-by: Thomas Renninger <[EMAIL PROTECTED]> --- drivers/acpi/video.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) Index: lenb/drivers/acpi/video.c =================================================================== --- lenb.orig/drivers/acpi/video.c +++ lenb/drivers/acpi/video.c @@ -34,6 +34,7 @@ #include <linux/input.h> #include <linux/backlight.h> #include <linux/video_output.h> +#include <linux/acpi.h> #include <asm/uaccess.h> #include <acpi/acpi_bus.h> @@ -1901,11 +1902,24 @@ static int acpi_video_bus_add(struct acp acpi_status status = 0; struct acpi_video_bus *video = NULL; struct input_dev *input; + struct device *dev; if (!device) return -EINVAL; + /* + * Check whether we have really a graphics device physically + * in the slot and registered at the system. + */ + dev = acpi_get_physical_device(device->handle); + if (!dev) { + printk (KERN_DEBUG PREFIX "Video device %s.%s not physically" + " connected, ignoring\n", acpi_device_bid(device), + device->parent ? acpi_device_bid(device->parent) : ""); + return -ENODEV; + } + video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); if (!video) return -ENOMEM; - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html