From: Michael S. Tsirkin <mst@redhat.com>
Date: Tue, 6 Jan 2015 12:37:22 +0000 (+0200)
Subject: arm: fix put_user sparse errors
X-Git-Tag: fixes-v4.0-rc1~59^2^2~21
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8b94dea3867139fe92f03b913e38ca841e390fd;p=pandora-kernel.git

arm: fix put_user sparse errors

virtio wants to write bitwise types to userspace using put_user.
At the moment this triggers sparse errors, since the value is passed
through an integer.

For example:

	__le32 __user *p;
	__le32 x;
	put_user(x, p);

is safe, but currently triggers a sparse warning.

Fix that up using __force.

Note: this does not suppress any useful sparse checks since caller
assigns x to typeof(*p), which in turn forces all the necessary type
checks.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---

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