Re: [PATCH] xen/pvcalls: fix unsigned less than zero error check

[Juergen Gross]

On 03/11/17 09:42, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> 
> The check on bedata->ref is never true because ref is an unsigned
> integer. Fix this by assigning signed int ret to the return of the
> call to gnttab_claim_grant_reference so the -ve return can be checked.
> 
> Detected by CoverityScan, CID#1460358 ("Unsigned compared against 0")
> 
> Fixes: 219681909913 ("xen/pvcalls: connect to the backend")
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>

Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Juergen