Thread (33 messages) 33 messages, 7 authors, 2015-01-23
STALE4177d REVIEWED: 1 (0M)

[PATCH repost 05/16] blackfin/uaccess: fix sparse errors

From: "Michael S. Tsirkin" <mst@redhat.com>
Date: 2014-12-25 09:29:05
Also in: lkml
Subsystem: the rest · Maintainer: Linus Torvalds

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: Steven Miao <redacted>
---
 arch/blackfin/include/asm/uaccess.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/blackfin/include/asm/uaccess.h b/arch/blackfin/include/asm/uaccess.h
index 57701c3..6a46e7d 100644
--- a/arch/blackfin/include/asm/uaccess.h
+++ b/arch/blackfin/include/asm/uaccess.h
@@ -147,7 +147,7 @@ static inline int bad_user_access_length(void)
 		}						\
 	} else							\
 		_err = -EFAULT;					\
-	x = (typeof(*(ptr)))_val;				\
+	x = (__force typeof(*(ptr)))_val;				\
 	_err;							\
 })
 
-- 
MST
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