From: "Michael S. Tsirkin" mst@redhat.com
commit 58fff51784cb5e1bcc06a1417be26eec4288507c upstream.
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.
Signed-off-by: Michael S. Tsirkin mst@redhat.com Acked-by: Will Deacon will.deacon@arm.com Signed-off-by: David Brown david.brown@linaro.org --- arch/arm64/include/asm/uaccess.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h index 3bf8f4e..9a2069b 100644 --- a/arch/arm64/include/asm/uaccess.h +++ b/arch/arm64/include/asm/uaccess.h @@ -147,7 +147,7 @@ do { \ default: \ BUILD_BUG(); \ } \ - (x) = (__typeof__(*(ptr)))__gu_val; \ + (x) = (__force __typeof__(*(ptr)))__gu_val; \ } while (0)
#define __get_user(x, ptr) \