[PATCH 5.9 101/252] swiotlb: using SIZE_MAX needs limits.h included

Greg Kroah-Hartman
2020-11-23T13:14:14Z

From: Stephen Rothwell <sfr@canb.auug.org.au>

[ Upstream commit f51778db088b2407ec177f2f4da0f6290602aa3f ]

After merging the drm-misc tree, linux-next build (arm
multi_v7_defconfig) failed like this:

In file included from drivers/gpu/drm/nouveau/nouveau_ttm.c:26:
include/linux/swiotlb.h: In function 'swiotlb_max_mapping_size':
include/linux/swiotlb.h:99:9: error: 'SIZE_MAX' undeclared (first use in this function)
99 | return SIZE_MAX;
| ^~~~~~~~
include/linux/swiotlb.h:7:1: note: 'SIZE_MAX' is defined in header '<stdint.h>'; did you forget to '#include <stdint.h>'?
6 | #include <linux/init.h>
+++ |+#include <stdint.h>
7 | #include <linux/types.h>
include/linux/swiotlb.h:99:9: note: each undeclared identifier is reported only once for each function it appears in
99 | return SIZE_MAX;
| ^~~~~~~~

Caused by commit

abe420bfae52 ("swiotlb: Introduce swiotlb_max_mapping_size()")

but only exposed by commit "drm/nouveu: fix swiotlb include"

Fix it by including linux/limits.h as appropriate.

Fixes: abe420bfae52 ("swiotlb: Introduce swiotlb_max_mapping_size()")
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Link: https://lore.kernel.org/r/20201102124327.2f82b2a7@canb.auug.org.au
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/linux/swiotlb.h | 1 +
1 file changed, 1 insertion(+)

diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index 046bb94bd4d61..fa5122c6711e6 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -5,6 +5,7 @@
#include <linux/dma-direction.h>
#include <linux/init.h>
#include <linux/types.h>
+#include <linux/limits.h>

struct device;
struct page;
--
2.27.0