Commit e182c570 authored Dec 12, 2014 by Michael S. Tsirkin

x86/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@redhat.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>

parent 99975cc6

arch/x86/include/asm/uaccess.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -179,7 +179,7 @@ __typeof__(__builtin_choose_expr(sizeof(x) > sizeof(0UL), 0ULL, 0UL))
		asm volatile("call __get_user_%P3" \
		: "=a" (__ret_gu), "=r" (__val_gu) \
		: "0" (ptr), "i" (sizeof(*(ptr)))); \
		(x) = (__typeof__(*(ptr))) __val_gu; \
		(x) = (__force __typeof__(*(ptr))) __val_gu; \
		__ret_gu; \
		})