From: "Michael S. Tsirkin" <mst@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: Arnd Bergmann <arnd@arndb.de>,
linux-arch@vger.kernel.org, Tony Luck <tony.luck@intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
Thierry Reding <treding@nvidia.com>,
linux-ia64@vger.kernel.org
Subject: [PATCH v2 07/40] ia64/uaccess: fix sparse errors
Date: Tue, 06 Jan 2015 15:43:53 +0000 [thread overview]
Message-ID: <1420558883-10131-8-git-send-email-mst@redhat.com> (raw)
In-Reply-To: <1420558883-10131-1-git-send-email-mst@redhat.com>
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/ia64/include/asm/uaccess.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/ia64/include/asm/uaccess.h b/arch/ia64/include/asm/uaccess.h
index 103bedc..967c312 100644
--- a/arch/ia64/include/asm/uaccess.h
+++ b/arch/ia64/include/asm/uaccess.h
@@ -197,7 +197,7 @@ extern void __get_user_unknown (void);
case 8: __get_user_size(__gu_val, __gu_ptr, 8, __gu_err); break; \
default: __get_user_unknown(); break; \
} \
- (x) = (__typeof__(*(__gu_ptr))) __gu_val; \
+ (x) = (__force __typeof__(*(__gu_ptr))) __gu_val; \
__gu_err; \
})
--
MST
next parent reply other threads:[~2015-01-06 15:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1420558883-10131-1-git-send-email-mst@redhat.com>
2015-01-06 15:43 ` Michael S. Tsirkin [this message]
2015-01-06 15:44 ` [PATCH v2 19/40] ia64: fix put_user sparse errors Michael S. Tsirkin
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