linux-kernel - [PATCH 3/3] x86/kexec: use pr_err() instead of pr

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Date: Fri, 15 Dec 2023 16:09:10 +0800
From: Yuntao Wang <ytcoode@...il.com>
To: linux-kernel@...r.kernel.org,
	kexec@...ts.infradead.org,
	x86@...nel.org
Cc: Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Jonathan Corbet <corbet@....net>,
	Eric Biederman <ebiederm@...ssion.com>,
	Yuntao Wang <ytcoode@...il.com>
Subject: [PATCH 3/3] x86/kexec: use pr_err() instead of pr_debug() when an error occurs

When an error is detected, use pr_err() instead of pr_debug() to output
log message.

In addition, remove the unnecessary return from set_page_address().

Signed-off-by: Yuntao Wang <ytcoode@...il.com>
---
 arch/x86/kernel/kexec-bzimage64.c | 2 +-
 mm/highmem.c                      | 2 --
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c
index a61c12c01270..472a45dbc79a 100644
--- a/arch/x86/kernel/kexec-bzimage64.c
+++ b/arch/x86/kernel/kexec-bzimage64.c
@@ -424,7 +424,7 @@ static void *bzImage64_load(struct kimage *image, char *kernel,
 	 * command line. Make sure it does not overflow
 	 */
 	if (cmdline_len + MAX_ELFCOREHDR_STR_LEN > header->cmdline_size) {
-		pr_debug("Appending elfcorehdr=<addr> to command line exceeds maximum allowed length\n");
+		pr_err("Appending elfcorehdr=<addr> to command line exceeds maximum allowed length\n");
 		return ERR_PTR(-EINVAL);
 	}
 
diff --git a/mm/highmem.c b/mm/highmem.c
index e19269093a93..bd48ba445dd4 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -799,8 +799,6 @@ void set_page_address(struct page *page, void *virtual)
 		}
 		spin_unlock_irqrestore(&pas->lock, flags);
 	}
-
-	return;
 }
 
 void __init page_address_init(void)
-- 
2.43.0