[Xen-devel] Re: linux c/s 437

[Yosuke Iwamatsu <y-iwamatsu@xxxxxxxxxxxxx>]

Jan Beulich wrote:
> This changeset added pcifront_{at,de}tach_devices() to
> drivers/xen/pcifront/xenbus.c, the two functions, however, return
> inconsistent/bogus return values, but their only caller doesn't care:
> Depending on the compiler version, the case of
> pcifront_detach_devices() leaving 'err' uninitialized may get warned
> about, and pcifront_attach_devices() would return -EFAULT if called
> in the wrong state.
>
> However, given the return values aren't used I'm really uncertain
> whether to just make the functions return 'void' or whether to fix the
> error values. Please advise.
It seems I didn't have much consideration on error values of
these functions when I implemented them ...
I think it would be reasonable to make pcifront_{at,de}tache_devices() 
return 'void' and keep the caller pcifront_backend_changed() as is.
BTW, pcifront_try_{dis,}connect() also have return values which are not
handled by their only caller. I'm not certain about them, but probably
we had better let these functions have 'void' return type as well.

Thanks,
  Yosuke Iwamatsu



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel