Patch "swiotlb: using SIZE_MAX needs limits.h included" has been added to the 5.9-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    swiotlb: using SIZE_MAX needs limits.h included

to the 5.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     swiotlb-using-size_max-needs-limits.h-included.patch
and it can be found in the queue-5.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 3646b6ad43facac61294c24540d1f582ba2cea7c
Author: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Date:   Mon Nov 2 12:43:27 2020 +1100

    swiotlb: using SIZE_MAX needs limits.h included
    
    [ 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@xxxxxxxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20201102124327.2f82b2a7@xxxxxxxxxxxxxxxx
    Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

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;