From: Michael S. Tsirkin <mst@redhat.com>
Date: Mon, 1 Dec 2014 11:31:45 +0000 (+0200)
Subject: virtio_console: fix sparse warnings
X-Git-Tag: omap-for-v3.19/fixes-rc1~129^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=48b36066b48025b7cd7d46c9a879f2f72fd9086a;p=pandora-kernel.git

virtio_console: fix sparse warnings

CHECK drivers/char/virtio_console.c
drivers/char/virtio_console.c:687:36: warning: incorrect type in
	argument 1 (different address spaces)
drivers/char/virtio_console.c:687:36:    expected void [noderef]
	<asn:1>*to
drivers/char/virtio_console.c:687:36:    got char *out_buf
drivers/char/virtio_console.c:790:35: warning: incorrect type in
	argument 2 (different address spaces)
drivers/char/virtio_console.c:790:35:    expected char *out_buf
drivers/char/virtio_console.c:790:35:    got char [noderef]
	<asn:1>*ubuf

fill_readbuf is reused with both kernel and userspace pointers,
depending on value of to_user flag.

Tag address parameter as __user, and cast to/from regular pointer type
when we know it's safe.

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

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