Re: [PATCH 1/2] staging/comedi/drivers: release allocated I/O regionif alloc_private fails

From: devendra.aaru
Date: Mon Jul 02 2012 - 04:43:37 EST


On Mon, Jul 2, 2012 at 2:10 PM, Ian Abbott <abbotti@xxxxxxxxx> wrote:
> On 2012-07-01 14:36, Devendra Naga wrote:
>>
>> if alloc_private fail, we wont' release the I/O region,
>> which was request_region 'ed.
>>
>> release the allocated I/O region if alloc_private fails.
>>
>> Signed-off-by: Devendra Naga <devendra.aaru@xxxxxxxxx>
>> ---
>
>
> No. The I/O region will be deallocated in fl512_detach() because
> dev->iobase has been set non-zero. fl512_detach() will be called by the
> comedi core if fl512_attach() returns an error. This is an unusual aspect
> of the comedi drivers.
>
Oh, i didn't see the comedi core, i went and saw that its not freed
up, so actaully driver unload wont' be called if driver attach , probe
fail. so i started sending this patch.

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

Devendra.
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