linux-kernel - [PATCH] arm: ptdump: convert to DEFINE_SHOW

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Date:   Tue, 30 Mar 2021 11:20:15 +0800
From:   Jisheng Zhang <Jisheng.Zhang@...aptics.com>
To:     Russell King <linux@...linux.org.uk>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] arm: ptdump: convert to DEFINE_SHOW_ATTRIBUTE

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@...aptics.com>
---
 arch/arm/mm/ptdump_debugfs.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/arch/arm/mm/ptdump_debugfs.c b/arch/arm/mm/ptdump_debugfs.c
index 8df9afac8d81..318de969ae0f 100644
--- a/arch/arm/mm/ptdump_debugfs.c
+++ b/arch/arm/mm/ptdump_debugfs.c
@@ -11,18 +11,7 @@ static int ptdump_show(struct seq_file *m, void *v)
 	ptdump_walk_pgd(m, info);
 	return 0;
 }
-
-static int ptdump_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, ptdump_show, inode->i_private);
-}
-
-static const struct file_operations ptdump_fops = {
-	.open		= ptdump_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(ptdump);
 
 void __init ptdump_debugfs_register(struct ptdump_info *info, const char *name)
 {
-- 
2.31.0