linux-kernel - [PATCH 4.20 62/65] lib: fix build failure in CONFIG_DEBUG

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Message-Id: <20190111131104.292995789@linuxfoundation.org>
Date:   Fri, 11 Jan 2019 15:15:48 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Christophe Leroy <christophe.leroy@....fr>,
        Kees Cook <keescook@...omium.org>,
        Michael Ellerman <mpe@...erman.id.au>
Subject: [PATCH 4.20 62/65] lib: fix build failure in CONFIG_DEBUG_VIRTUAL test

4.20-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christophe Leroy <christophe.leroy@....fr>

commit 10fdf838e5f540beca466e9d1325999c072e5d3f upstream.

On several arches, virt_to_phys() is in io.h

Build fails without it:

  CC      lib/test_debug_virtual.o
lib/test_debug_virtual.c: In function 'test_debug_virtual_init':
lib/test_debug_virtual.c:26:7: error: implicit declaration of function 'virt_to_phys' [-Werror=implicit-function-declaration]
  pa = virt_to_phys(va);
       ^

Fixes: e4dace361552 ("lib: add test module for CONFIG_DEBUG_VIRTUAL")
CC: stable@...r.kernel.org
Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
Reviewed-by: Kees Cook <keescook@...omium.org>
Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 lib/test_debug_virtual.c |    1 +
 1 file changed, 1 insertion(+)

--- a/lib/test_debug_virtual.c
+++ b/lib/test_debug_virtual.c
@@ -5,6 +5,7 @@
 #include <linux/vmalloc.h>
 #include <linux/slab.h>
 #include <linux/sizes.h>
+#include <linux/io.h>
 
 #include <asm/page.h>
 #ifdef CONFIG_MIPS