From 8f7fadb4ba87f6639d817a9b2d99112e9507dc63 Mon Sep 17 00:00:00 2001
From: Christophe Leroy <christophe.leroy@csgroup.eu>
Date: Tue, 31 Aug 2021 08:30:24 +0000
Subject: powerpc/machdep: Remove stale functions from ppc_md structure

ppc_md.iommu_save() is not set anymore by any platform after
commit c40785ad305b ("powerpc/dart: Use a cachable DART").
So iommu_save() has become a nop and can be removed.

ppc_md.show_percpuinfo() is not set anymore by any platform after
commit 4350147a816b ("[PATCH] ppc64: SMU based macs cpufreq support").

Last users of ppc_md.rtc_read_val() and ppc_md.rtc_write_val() were
removed by commit 0f03a43b8f0f ("[POWERPC] Remove todc code from
ARCH=powerpc")

Last user of kgdb_map_scc() was removed by commit 17ce452f7ea3 ("kgdb,
powerpc: arch specific powerpc kgdb support").

ppc.machine_kexec_prepare() has not been used since
commit 8ee3e0d69623 ("powerpc: Remove the main legacy iSerie platform
code"). This allows the removal of machine_kexec_prepare() and the
rename of default_machine_kexec_prepare() into machine_kexec_prepare()

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Daniel Axtens <dja@axtens.net>
[mpe: Drop prototype for default_machine_kexec_prepare() as noted by dja]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/24d4ca0ada683c9436a5f812a7aeb0a1362afa2b.1630398606.git.christophe.leroy@csgroup.eu
---
 arch/powerpc/kexec/core.c    | 13 -------------
 arch/powerpc/kexec/core_32.c |  2 +-
 arch/powerpc/kexec/core_64.c |  2 +-
 3 files changed, 2 insertions(+), 15 deletions(-)

(limited to 'arch/powerpc/kexec')

diff --git a/arch/powerpc/kexec/core.c b/arch/powerpc/kexec/core.c
index 48525e8b5730..a2242017e55f 100644
--- a/arch/powerpc/kexec/core.c
+++ b/arch/powerpc/kexec/core.c
@@ -48,19 +48,6 @@ void machine_crash_shutdown(struct pt_regs *regs)
 	default_machine_crash_shutdown(regs);
 }
 
-/*
- * Do what every setup is needed on image and the
- * reboot code buffer to allow us to avoid allocations
- * later.
- */
-int machine_kexec_prepare(struct kimage *image)
-{
-	if (ppc_md.machine_kexec_prepare)
-		return ppc_md.machine_kexec_prepare(image);
-	else
-		return default_machine_kexec_prepare(image);
-}
-
 void machine_kexec_cleanup(struct kimage *image)
 {
 }
diff --git a/arch/powerpc/kexec/core_32.c b/arch/powerpc/kexec/core_32.c
index bf9f1f906d64..b50aed48d09d 100644
--- a/arch/powerpc/kexec/core_32.c
+++ b/arch/powerpc/kexec/core_32.c
@@ -63,7 +63,7 @@ void default_machine_kexec(struct kimage *image)
 	(*rnk)(page_list, reboot_code_buffer_phys, image->start);
 }
 
-int default_machine_kexec_prepare(struct kimage *image)
+int machine_kexec_prepare(struct kimage *image)
 {
 	return 0;
 }
diff --git a/arch/powerpc/kexec/core_64.c b/arch/powerpc/kexec/core_64.c
index 89c069d664a5..66678518b938 100644
--- a/arch/powerpc/kexec/core_64.c
+++ b/arch/powerpc/kexec/core_64.c
@@ -32,7 +32,7 @@
 #include <asm/svm.h>
 #include <asm/ultravisor.h>
 
-int default_machine_kexec_prepare(struct kimage *image)
+int machine_kexec_prepare(struct kimage *image)
 {
 	int i;
 	unsigned long begin, end;	/* limits of segment */
-- 
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