[PATCH v2 02/40] alpha/uaccess: fix sparse errors

From: Michael S. Tsirkin
Date: Tue Jan 06 2015 - 10:44:05 EST


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@xxxxxxxxxx>
---
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..a234de7 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

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