linux-kernel - [PATCH v4 07/10] arm64: kdump: Remove custom linux,elfcorehdr parsing

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Message-Id: <65b6e3294cb84d50a6aab8503a9ebcf41445166d.1626266516.git.geert+renesas@glider.be>
Date:   Wed, 14 Jul 2021 14:50:17 +0200
From:   Geert Uytterhoeven <geert+renesas@...der.be>
To:     Rob Herring <robh+dt@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Nicolas Pitre <nico@...xnic.net>,
        Ard Biesheuvel <ardb@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Nick Kossifidis <mick@....forth.gr>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Frank Rowand <frowand.list@...il.com>,
        Dave Young <dyoung@...hat.com>, Mike Rapoport <rppt@...nel.org>
Cc:     Baoquan He <bhe@...hat.com>, Vivek Goyal <vgoyal@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-riscv@...ts.infradead.org, kexec@...ts.infradead.org,
        linux-mm@...ck.org, linux-renesas-soc@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH v4 07/10] arm64: kdump: Remove custom linux,elfcorehdr parsing

Remove the architecture-specific code for parsing the "linux,elfcorehdr"
property under the "/chosen" node in DT, as the platform-agnostic
handling in the FDT core code already takes care of this.

Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
v4:
  - s/handlng/parsing/ in patch description.
---
 arch/arm64/mm/init.c | 21 ---------------------
 1 file changed, 21 deletions(-)

diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 8490ed2917ff2430..946e246660f2b180 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -125,25 +125,6 @@ static void __init reserve_crashkernel(void)
 #endif /* CONFIG_KEXEC_CORE */
 
 #ifdef CONFIG_CRASH_DUMP
-static int __init early_init_dt_scan_elfcorehdr(unsigned long node,
-		const char *uname, int depth, void *data)
-{
-	const __be32 *reg;
-	int len;
-
-	if (depth != 1 || strcmp(uname, "chosen") != 0)
-		return 0;
-
-	reg = of_get_flat_dt_prop(node, "linux,elfcorehdr", &len);
-	if (!reg || (len < (dt_root_addr_cells + dt_root_size_cells)))
-		return 1;
-
-	elfcorehdr_addr = dt_mem_next_cell(dt_root_addr_cells, &reg);
-	elfcorehdr_size = dt_mem_next_cell(dt_root_size_cells, &reg);
-
-	return 1;
-}
-
 /*
  * reserve_elfcorehdr() - reserves memory for elf core header
  *
@@ -154,8 +135,6 @@ static int __init early_init_dt_scan_elfcorehdr(unsigned long node,
  */
 static void __init reserve_elfcorehdr(void)
 {
-	of_scan_flat_dt(early_init_dt_scan_elfcorehdr, NULL);
-
 	if (!elfcorehdr_size)
 		return;
 
-- 
2.25.1