Re: Rescan IDE interface when no IDE devices are present

[Daniel De Graaf]

On 7/25/06, Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote:
> On Sul, 2006-07-16 at 15:03 -0500, Daniel De Graaf wrote:
> > On 7/16/06, Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> wrote:
> > > If you have ide1, you have both hdc and hdd (slave of hdc) unles sit's
> > > not really IDE ...
> > >
> > > Ben.
> >
> > Yes, I have /dev/hdd, but no device is ever present there. I also have
> > /dev/sda for the SATA hard disk, but do not think it is useful for
> > HDIO_SCAN_HWIF or HWIO_UNREGISTER_HWIF ioctls.
>
> There isn't. Feel free to write a module to do it (see how the ioctl
> handles it and follow the same logic). Its at best a hack. libata is
> trying to add proper hotplug for ATA/SATA.
>
> Alan

I wrote a module to do the register/unregister through a /proc file.
It currently only works on ide1; the constants in scan_hw and unreg_hw
should be made to depend on the value written to the /proc if other
interfaces are needed. Available at
http://danieldegraaf.afraid.org/linux/ide_proc_register.c

Daniel
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