[PATCH 02/18] alpha/uaccess: fix sparse errors

Michael S. Tsirkin
2014-12-14T16:52:29Z

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/alpha/include/asm/uaccess.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/alpha/include/asm/uaccess.h b/arch/alpha/include/asm/uaccess.h
index 766fdfd..fbe1d1e 100644
--- a/arch/alpha/include/asm/uaccess.h
+++ b/arch/alpha/include/asm/uaccess.h
@@ -96,7 +96,7 @@ extern void __get_user_unknown(void);
case 8: __get_user_64(ptr); break; \
default: __get_user_unknown(); break; \
} \
- (x) = (__typeof__(*(ptr))) __gu_val; \
+ (x) = (__force __typeof__(*(ptr))) __gu_val; \
__gu_err; \
})

@@ -115,7 +115,7 @@ extern void __get_user_unknown(void);
default: __get_user_unknown(); break; \
} \
} \
- (x) = (__typeof__(*(ptr))) __gu_val; \
+ (x) = (__force __typeof__(*(ptr))) __gu_val; \
__gu_err; \
})

--
MST