| Date | Mon, 15 Dec 2014 11:17:16 +0000 | From | Will Deacon <> | Subject | Re: [PATCH 03/18] arm64/uaccess: fix sparse errors |
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On Sun, Dec 14, 2014 at 04:52:09PM +0000, Michael S. Tsirkin wrote: > 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> > --- > arch/arm64/include/asm/uaccess.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h > index 3bf8f4e..8d66bcf 100644 > --- a/arch/arm64/include/asm/uaccess.h > +++ b/arch/arm64/include/asm/uaccess.h > @@ -147,7 +147,7 @@ do { \ > default: \ > BUILD_BUG(); \ > } \ > - (x) = (__typeof__(*(ptr)))__gu_val; \ > + (x) = (__force __typeof__(*(ptr)))__gu_val; \ > } while (0) > > #define __get_user(x, ptr) \
Acked-by: Will Deacon <will.deacon@arm.com>
Will
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