Re: usb: gadget: fsl: Fix a wrong judgment in fsl_udc_probe()

[Tang Bin]

Hi Markus:

On 2020/4/10 16:30, Markus Elfring wrote:
> > Hardware experiments show that the negative return value is not just "-EPROBE_DEFER".
> How much will this specific error code influence our understanding
> of the discussed software situation?
From my superficial knowledge, I think we should not think about it 
too complicated. The return value is just zero or negative, and for 
these negative return value, such as 
"-ENODEV"ã"-ENXIO"ã"-ENOENT"ãâEPROBE_DEFERâïmay be the same 
effectãButâ-EPROBE_DEFERâhas another importment function: Driver 
requested deferred probingïwhich is used in cases where the dependency 
resource is not ready during the driver initialization process.
> > > > +ÂÂÂÂÂÂÂ ret = udc_controller->irq ? : -ENODEV;
> > > Will it be clearer to specify values for all cases in such a conditional operator
> > > (instead of leaving one case empty)?
> > I don't know what you mean of "instead of leaving one case empty".
> I suggest to reconsider also the proposed specification ââ ? : ââ.

What you mean is the way I'm writtenï

I have provided two ways of patching, both functional can be verified on 
hardware.

Thanks for your patience.

Tang Bin