linux-kernel - [PATCH 1/1] mm/early_ioremap.c: remove redundant early_ioremap

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Date:   Wed,  1 Sep 2021 16:29:17 +0800
From:   Weizhao Ouyang <o451686892@...il.com>
To:     arnd@...db.de, akpm@...ux-foundation.org
Cc:     linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Weizhao Ouyang <o451686892@...il.com>
Subject: [PATCH 1/1] mm/early_ioremap.c: remove redundant early_ioremap_shutdown()

early_ioremap_reset() reserved a weak function so that architectures can
provide a specific cleanup. Now no architectures use it, remove this
redundant function.

Signed-off-by: Weizhao Ouyang <o451686892@...il.com>
---
 include/asm-generic/early_ioremap.h | 6 ------
 mm/early_ioremap.c                  | 5 -----
 2 files changed, 11 deletions(-)

diff --git a/include/asm-generic/early_ioremap.h b/include/asm-generic/early_ioremap.h
index 9def22e6e2b3..9d0479f50f97 100644
--- a/include/asm-generic/early_ioremap.h
+++ b/include/asm-generic/early_ioremap.h
@@ -19,12 +19,6 @@ extern void *early_memremap_prot(resource_size_t phys_addr,
 extern void early_iounmap(void __iomem *addr, unsigned long size);
 extern void early_memunmap(void *addr, unsigned long size);
 
-/*
- * Weak function called by early_ioremap_reset(). It does nothing, but
- * architectures may provide their own version to do any needed cleanups.
- */
-extern void early_ioremap_shutdown(void);
-
 #if defined(CONFIG_GENERIC_EARLY_IOREMAP) && defined(CONFIG_MMU)
 /* Arch-specific initialization */
 extern void early_ioremap_init(void);
diff --git a/mm/early_ioremap.c b/mm/early_ioremap.c
index 164607c7cdf1..74984c23a87e 100644
--- a/mm/early_ioremap.c
+++ b/mm/early_ioremap.c
@@ -38,13 +38,8 @@ pgprot_t __init __weak early_memremap_pgprot_adjust(resource_size_t phys_addr,
 	return prot;
 }
 
-void __init __weak early_ioremap_shutdown(void)
-{
-}
-
 void __init early_ioremap_reset(void)
 {
-	early_ioremap_shutdown();
 	after_paging_init = 1;
 }
 
-- 
2.30.2