From 408093d2a1724ea4c8518bd2bfee166132a6cbfa Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@suse.de>
Date: Thu, 9 Jun 2011 12:13:08 -0700
Subject: [PATCH] Staging: comedi: drivers.c: fix PAGE_KERNEL_NOCACHE issue

Not all arches have PAGE_KERNEL_NOCACHE, so use the "normal" PAGE_KERNEL
on those that do not have it.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/staging/comedi/drivers.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c
index 6d60e91b3a85..db1fd63aaab3 100644
--- a/drivers/staging/comedi/drivers.c
+++ b/drivers/staging/comedi/drivers.c
@@ -502,7 +502,11 @@ int comedi_buf_alloc(struct comedi_device *dev, struct comedi_subdevice *s,
 		}
 		if (i == n_pages) {
 			async->prealloc_buf =
+#ifdef PAGE_KERNEL_NOCACHE
 			    vmap(pages, n_pages, VM_MAP, PAGE_KERNEL_NOCACHE);
+#else
+			    vmap(pages, n_pages, VM_MAP, PAGE_KERNEL);
+#endif
 		}
 		vfree(pages);