linux-kernel - [PATCH] ARM: mm: remove unused variables

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Date:   Tue, 4 Jun 2019 14:19:57 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <patches@...linux.org.uk>
CC:     <linux-kernel@...r.kernel.org>, <geert+renesas@...der.be>,
        <keescook@...omium.org>, <linux-arm-kernel@...ts.infradead.org>,
        <akpm@...ux-foundation.org>, <rppt@...ux.ibm.com>,
        <linux@...linux.org.uk>, <geert@...ux-m68k.org>, <krzk@...nel.org>,
        <rmk+kernel@...linux.org.uk>, YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH] ARM: mm: remove unused variables

Fix gcc warnings:

arch/arm/mm/init.c: In function 'mem_init':
arch/arm/mm/init.c:456:13: warning: unused variable 'itcm_end' [-Wunused-variable]
  extern u32 itcm_end;
             ^
arch/arm/mm/init.c:455:13: warning: unused variable 'dtcm_end' [-Wunused-variable]
  extern u32 dtcm_end;
             ^

They are not used any more since
commit 1c31d4e96b8c ("ARM: 8820/1: mm: Stop printing the virtual memory layout")

Link: https://lkml.org/lkml/2019/5/12/82
Signed-off-by: YueHaibing <yuehaibing@...wei.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>
---
KernelVersion: 5.2-rc5
 arch/arm/mm/init.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index be0b42937888..c71ecbb04db8 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -450,12 +450,6 @@ static void __init free_highpages(void)
  */
 void __init mem_init(void)
 {
-#ifdef CONFIG_HAVE_TCM
-	/* These pointers are filled in on TCM detection */
-	extern u32 dtcm_end;
-	extern u32 itcm_end;
-#endif
-
 	set_max_mapnr(pfn_to_page(max_pfn) - mem_map);
 
 	/* this will put all unused low memory onto the freelists */
-- 
2.20.1