On Tue, Jan 06, 2015 at 04:43:50PM +0100, Michael S. Tsirkin wrote:
> virtio wants to read bitwise types from userspace using get_user. At the
> moment this triggers sparse errors, since the value is passed through an
> integer.
>
> Fix that up using __force.
Looks sane, I'll take this in the CRIS tree since you
have a cleanup patch which depends on it.
Thanks!
/Jesper
> Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
> ---
> arch/cris/include/asm/uaccess.h | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/cris/include/asm/uaccess.h b/arch/cris/include/asm/uaccess.h
> index 9145408..9cf5a23 100644
> --- a/arch/cris/include/asm/uaccess.h
> +++ b/arch/cris/include/asm/uaccess.h
> @@ -153,7 +153,7 @@ struct __large_struct { unsigned long buf[100]; };
> ({ \
> long __gu_err, __gu_val; \
> __get_user_size(__gu_val,(ptr),(size),__gu_err); \
> - (x) = (__typeof__(*(ptr)))__gu_val; \
> + (x) = (__force __typeof__(*(ptr)))__gu_val; \
> __gu_err; \
> })
>
> @@ -163,7 +163,7 @@ struct __large_struct { unsigned long buf[100]; };
> const __typeof__(*(ptr)) *__gu_addr = (ptr); \
> if (access_ok(VERIFY_READ,__gu_addr,size)) \
> __get_user_size(__gu_val,__gu_addr,(size),__gu_err); \
> - (x) = (__typeof__(*(ptr)))__gu_val; \
> + (x) = (__force __typeof__(*(ptr)))__gu_val; \
> __gu_err; \
> })
>
> --
> MST
/^JN - Jesper Nilsson
--
Jesper Nilsson -- jesper.nilsson@xxxxxxxx
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