RE: [PATCH] usb: gadget: f_fs: report error if excess data received

[Du, Changbin]

> On Wed, May 11 2016, Felipe Balbi wrote:
> > Also, returning -EOVERFLOW is not exactly correct here, because you'd
> > violate POSIX specification of read(), right ?
> 
> Maybe we could piggyback on:
> 
>        EINVAL fd was created via a call to timerfd_create(2) and the
>               wrong size buffer was given to read();
> 
> But I kinda agree.  Iâm not sure how much we need to care about this
> instead of having user space round their buffers up to the nearest max
> packet size boundary.
> 
> --
> Best regards
> ããã âðððð86â ãããããã
> ÂIf at first you donât succeed, give up skydivingÂ

This is a good idea that "having user space round their buffers". But kernel
Still cannot hide error silently. :)