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"、"-ENXIO"、"-ENOENT"、“EPROBE_DEFER”，may be the same
effect。But“-EPROBE_DEFER”has another importment function: Driver
requested deferred probing，which is used in cases where the dependency
resource is not ready during the driver initialization process.
+ 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 “… ? : …”.
What you mean is the way I'm written？
I have provided two ways of patching, both functional can be verified on
hardware.
Thanks for your patience.
Tang Bin
