Re: [PATCH 30/90] staging: comedi: amplc_dio200: store the pci_devin the comedi_device

[Ian Abbott]

On 2012-07-19 11:10, Ian Abbott wrote:
> On 2012-07-19 02:37, H Hartley Sweeten wrote:
> > Use the hw_dev pointer in the comedi_device struct to hold the
> > pci_dev instead of carrying it in the private data.
> >
> > Since the pci_dev is no longer held in the provate data, we can
> > also cleanup the detach a bit. Remove the IS_ENABLED() tests in
> > the detach. If the pci_dev is non NULL it's a PCI device otherwise
> > it's an ISA device. Using IS_ENABLED() to omit the code paths
> > makes the code a bit confusing and doesn't save much.
>
> No, you really need to check thisboard->bustype in the detach() because
> hw_dev might be NULL for a PCI board if the attach() failed.

Actually, your patch wouldn't do any harm as dev->iobase would be 0.  It 
would just go through the "failed ISA device" path instead of the 
"failed PCI device" path.  It would be more robust to check 
thisboard->bustype though.

--
-=( Ian Abbott @ MEV Ltd.    E-mail: <abbotti@xxxxxxxxx>        )=-
-=( Tel: +44 (0)161 477 1898   FAX: +44 (0)161 718 3587         )=-


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