[PATCH 18/18] m68k/uaccess: fix sparse errors

Michael S. Tsirkin
2014-12-14T16:53:28Z

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>
---
arch/m68k/include/asm/uaccess_mm.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/m68k/include/asm/uaccess_mm.h b/arch/m68k/include/asm/uaccess_mm.h
index 15901db..c31f53f 100644
--- a/arch/m68k/include/asm/uaccess_mm.h
+++ b/arch/m68k/include/asm/uaccess_mm.h
@@ -146,7 +146,7 @@ asm volatile ("\n" \
" .previous" \
: "+d" (res), "=&" #reg (__gu_val) \
: "m" (*(ptr)), "i" (err)); \
- (x) = (typeof(*(ptr)))(unsigned long)__gu_val; \
+ (x) = (__force typeof(*(ptr)))(__force unsigned long)__gu_val; \
})

#define __get_user(x, ptr) \
@@ -188,7 +188,7 @@ asm volatile ("\n" \
"+a" (__gu_ptr) \
: "i" (-EFAULT) \
: "memory"); \
- (x) = (typeof(*(ptr)))__gu_val; \
+ (x) = (__force typeof(*(ptr)))__gu_val; \
break; \
} */ \
default: \
--
MST