Thread (84 messages) 84 messages, 14 authors, 2015-01-27
STALE4196d REVIEWED: 1 (0M)

[PATCH v2 04/40] avr32/uaccess: fix sparse errors

From: "Michael S. Tsirkin" <mst@redhat.com>
Date: 2015-01-06 15:56:08
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: Hans-Christian Egtvedt <redacted>
---
 arch/avr32/include/asm/uaccess.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/avr32/include/asm/uaccess.h b/arch/avr32/include/asm/uaccess.h
index 245b2ee..ccd07c4 100644
--- a/arch/avr32/include/asm/uaccess.h
+++ b/arch/avr32/include/asm/uaccess.h
@@ -191,7 +191,7 @@ extern int __put_user_bad(void);
 	default: __gu_err = __get_user_bad(); break;			\
 	}								\
 									\
-	x = (typeof(*(ptr)))__gu_val;					\
+	x = (__force typeof(*(ptr)))__gu_val;				\
 	__gu_err;							\
 })
 
@@ -222,7 +222,7 @@ extern int __put_user_bad(void);
 	} else {							\
 		__gu_err = -EFAULT;					\
 	}								\
-	x = (typeof(*(ptr)))__gu_val;					\
+	x = (__force typeof(*(ptr)))__gu_val;				\
 	__gu_err;							\
 })
 
-- 
MST
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help