Messages in this thread | | | Subject | Re: UIO device name | From | Joakim Tjernlund <> | Date | Wed, 24 Sep 2008 11:57:59 +0200 |
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On Wed, 2008-09-24 at 18:35 +0900, Paul Mundt wrote: > On Wed, Sep 24, 2008 at 11:21:33AM +0200, Joakim Tjernlund wrote: > > As far as I can see there isn't a way to name the /dev/uio%d device file > > to something more useful, is that so? > > I would like to name the device file from within the kernel so I can > > find the correct device from userspace. > > The very least is to control the minor(%d) number. > > > You have a couple of options for this: > > - the 'name' sysfs entry for each of the uio devices, which > corresponds to the uio device name. > - extracting the relevant data from things like 'lsuio'. > - hooking in the pretty mame through udev to create an alias.
Right, but I want to do it from within the kernel when I create the device because that the only place I truly know what HW the uio maps to.
I found that this works: struct uio_info *info, struct uio_device *idev;
idev = info->uio_dev; device_rename(idev->dev, "irq4");
but then I have to copy the private uio_device struct from uio.c Is there a better way to get at idev->dev?
Jocke
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