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V4L/DVB (9473): add DVB_DEVICE_NUM and DVB_ADAPTER_NUM to uevent

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This allows udev to create proper device nodes without any
hacky shell scripts/programs to call, which guess these numbers
from the kernel device names.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Kay Sievers 2008-10-27 22:27:37 -03:00 committed by Mauro Carvalho Chehab
parent 7b51a70cbf
commit a5f4c0ce68
1 changed files with 11 additions and 1 deletions
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12
drivers/media/dvb/dvb-core/dvbdev.c
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@ -252,7 +252,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
clsdev = device_create(dvb_class, adap->device, clsdev = device_create(dvb_class, adap->device,
MKDEV(DVB_MAJOR, nums2minor(adap->num, type, id)), MKDEV(DVB_MAJOR, nums2minor(adap->num, type, id)),
NULL, "dvb%d.%s%d", adap->num, dnames[type], id); dvbdev, "dvb%d.%s%d", adap->num, dnames[type], id);
if (IS_ERR(clsdev)) { if (IS_ERR(clsdev)) {
printk(KERN_ERR "%s: failed to create device dvb%d.%s%d (%ld)\n", printk(KERN_ERR "%s: failed to create device dvb%d.%s%d (%ld)\n",
__func__, adap->num, dnames[type], id, PTR_ERR(clsdev)); __func__, adap->num, dnames[type], id, PTR_ERR(clsdev));
@ -432,6 +432,15 @@ out:
return err; return err;
} }
static int dvb_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct dvb_device *dvbdev = dev_get_drvdata(dev);
add_uevent_var(env, "DVB_DEVICE_NUM=%d", dvbdev->id);
add_uevent_var(env, "DVB_ADAPTER_NUM=%d", dvbdev->adapter->num);
return 0;
}
static int __init init_dvbdev(void) static int __init init_dvbdev(void)
{ {
int retval; int retval;
@ -453,6 +462,7 @@ static int __init init_dvbdev(void)
retval = PTR_ERR(dvb_class); retval = PTR_ERR(dvb_class);
goto error; goto error;
} }
dvb_class->dev_uevent = dvb_uevent;
return 0; return 0;
error: error: