[PATCH -fixes] riscv: uaccess: Return the number of bytes effectively copied

[Conor Dooley]

On Fri, Aug 11, 2023 at 01:39:16PM +0200, Alexandre Ghiti wrote:
> On 11/08/2023 13:03, Alexandre Ghiti wrote:
> > It was reported that the riscv kernel hangs while executing the test
> > in [1].
> > 
> > Indeed, the test hangs when trying to write a buffer to a file. The
> > problem is that the riscv implementation of raw_copy_from_user() does not
> > return the number of bytes written when an exception happens and is fixed
> > up.
> 
> 
> I'll respin another version as the changelog and the title are incorrect:
> the uaccess routines should not return the number of bytes copied but
> actually the number of bytes not copied (this is what this patch
> implements).
> 
> I'll wait for feedbacks before doing so!

While you're editing te changelog, can you make the link a regular Link:
tag? You can do `Link: <foo> [1]`.
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