Re: [PATCH 02/13] dmaengine: Introduce dma_request_slave_channel_compat_reason()

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

On Fri, May 29, 2015 at 11:33 AM, Vinod Koul <vinod.koul@xxxxxxxxx> wrote:
> On Tue, May 26, 2015 at 04:25:57PM +0300, Peter Ujfalusi wrote:
>> dma_request_slave_channel_compat() 'eats' up the returned error codes which
>> prevents drivers using the compat call to be able to do deferred probing.
>>
>> The new wrapper is identical in functionality but it will return with error
>> code in case of failure and will pass the -EPROBE_DEFER to the caller in
>> case dma_request_slave_channel_reason() returned with it.
> This is okay but am worried about one more warpper, how about fixing
> dma_request_slave_channel_compat()

Then all callers of dma_request_slave_channel_compat() have to be
modified to handle ERR_PTR first.

The same is true for (the existing) dma_request_slave_channel_reason()
vs. dma_request_slave_channel().

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

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                                -- Linus Torvalds
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