Hi Peter and Andy,
> >>>> Shouldn't you return -ETIMEDOUT if count == 0?
> >>> Yes. Good catch. Does the below fix looks ok?
> >>>
> >>> do {
> >>> status = ccg_write(uc, CCGX_RAB_INTR_REG, &data,
> sizeof(data));
> >>> if (status < 0)
> >>> return status;
> >>>
> >>> usleep_range(10000, 11000);
> >>>
> >>> status = ccg_read(uc, CCGX_RAB_INTR_REG, &data, sizeof(data));
> >>> if (status < 0)
> >>> return status;
> >>>
> >>> if (!data)
> >>> return 0;
> >>> } while (data && count--);
> >>
> >> Doesn't that condition break out of the loop immediately?
> > How? I didn't get your point? We want to break out when data is zero
> > (interrupt status cleared).
>
> The statement
>
> if (!data)
> return 0;
>
> ensures that 'data' is non-zero when the loop continues, so checking that
> 'data' is non-zero in the while loop test is pointless.
>
> >>> Ah, I see, but why you not reorganize it to put this into do-while loop?
> > We actually need to check data after reading it so will reorganize
> accordingly.
Sorry, my bad, will revise.
Thanks
Ajay
--nvpublic
> > do {
> > read
> > check for data and break out if (!data)
> > write
> > sleep
> > } while (--count);
>
> Here, you have fixed the "issue" (but it doesn't match v14).
>
> Cheers,
> Peter
