linux-kernel - [PATCH 12/18] parisc/uaccess: fix sparse errors

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Date:	Sun, 14 Dec 2014 18:52:47 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	Arnd Bergmann <arnd@...db.de>, linux-arch@...r.kernel.org,
	"James E.J. Bottomley" <jejb@...isc-linux.org>,
	Helge Deller <deller@....de>, linux-parisc@...r.kernel.org
Subject: [PATCH 12/18] parisc/uaccess: fix sparse errors

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@...hat.com>
---
 arch/parisc/include/asm/uaccess.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h
index a5cb070..3a20da6 100644
--- a/arch/parisc/include/asm/uaccess.h
+++ b/arch/parisc/include/asm/uaccess.h
@@ -104,7 +104,7 @@ struct exception_data {
 	    }                                           \
 	}                                               \
 							\
-	(x) = (__typeof__(*(ptr))) __gu_val;            \
+	(x) = (__force __typeof__(*(ptr))) __gu_val;            \
 	__gu_err;                                       \
 })
 
-- 
MST

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