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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Guenter Roeck <linux@roeck-us.net>,
        Daniel Axtens <dja@axtens.net>
Subject: [PATCH 4.9 34/47] powerpc/uaccess-flush: fix missing includes in kup-radix.h
Date:   Mon, 23 Nov 2020 13:22:20 +0100
Message-Id: <20201123121807.210505651@linuxfoundation.org>
In-Reply-To: <20201123121805.530891002@linuxfoundation.org>
References: <20201123121805.530891002@linuxfoundation.org>
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From: Daniel Axtens <dja@axtens.net>

Guenter reports a build failure on cell_defconfig and maple_defconfg:

In file included from arch/powerpc/include/asm/kup.h:10:0,
		 from arch/powerpc/include/asm/uaccess.h:12,
		 from arch/powerpc/lib/checksum_wrappers.c:24:
arch/powerpc/include/asm/book3s/64/kup-radix.h:5:1: error: data definition has no type or storage class [-Werror]
 DECLARE_STATIC_KEY_FALSE(uaccess_flush_key);
 ^~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/book3s/64/kup-radix.h:5:1: error: type defaults to ‘int’ in declaration of ‘DECLARE_STATIC_KEY_FALSE’ [-Werror=implicit-int]
arch/powerpc/include/asm/book3s/64/kup-radix.h:5:1: error: parameter names (without types) in function declaration [-Werror]
arch/powerpc/include/asm/book3s/64/kup-radix.h: In function ‘prevent_user_access’:
arch/powerpc/include/asm/book3s/64/kup-radix.h:18:6: error: implicit declaration of function ‘static_branch_unlikely’ [-Werror=implicit-function-declaration]
  if (static_branch_unlikely(&uaccess_flush_key))
      ^~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/book3s/64/kup-radix.h:18:30: error: ‘uaccess_flush_key’ undeclared (first use in this function); did you mean
‘do_uaccess_flush’?
  if (static_branch_unlikely(&uaccess_flush_key))
			      ^~~~~~~~~~~~~~~~~
			      do_uaccess_flush
arch/powerpc/include/asm/book3s/64/kup-radix.h:18:30: note: each undeclared identifier is reported only once for each function it appears in
cc1: all warnings being treated as errors

This is because I failed to include linux/jump_label.h in kup-radix.h. Include it.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/powerpc/include/asm/book3s/64/kup-radix.h |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/powerpc/include/asm/book3s/64/kup-radix.h
+++ b/arch/powerpc/include/asm/book3s/64/kup-radix.h
@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_POWERPC_BOOK3S_64_KUP_RADIX_H
 #define _ASM_POWERPC_BOOK3S_64_KUP_RADIX_H
+#include <linux/jump_label.h>
 
 DECLARE_STATIC_KEY_FALSE(uaccess_flush_key);