Hi all, After merging the drm-misc tree, today's 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 4dbafbd30aef ("drm/nouveu: fix swiotlb include") I applied the following fix for today: From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> Date: Mon, 2 Nov 2020 12:34:57 +1100 Subject: [PATCH] swiotlb: using SIZE_MAX needs limits.h included Fixes: abe420bfae52 ("swiotlb: Introduce swiotlb_max_mapping_size()") Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> --- include/linux/swiotlb.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 513913ff7486..ed9de7855d3b 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -5,6 +5,9 @@ #include <linux/dma-direction.h> #include <linux/init.h> #include <linux/types.h> +#ifndef CONFIG_SWIOTLB +#include <linux/limits.h> +#endif struct device; struct page; -- 2.28.0 -- Cheers, Stephen Rothwell
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