linux-kernel - [PATCH -next v2] arm: dump: Convert to DEFINE_SHOW

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Message-ID: <20200919025137.16858-1-miaoqinglang@huawei.com>
Date:   Sat, 19 Sep 2020 10:51:37 +0800
From:   Qinglang Miao <miaoqinglang@...wei.com>
To:     Russell King <linux@...linux.org.uk>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Qinglang Miao <miaoqinglang@...wei.com>
Subject: [PATCH -next v2] arm: dump: Convert to DEFINE_SHOW_ATTRIBUTE

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Qinglang Miao <miaoqinglang@...wei.com>
---
v2: based on linux-next(20200917), and can be applied to
    mainline cleanly now.

 arch/arm/mm/ptdump_debugfs.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/arch/arm/mm/ptdump_debugfs.c b/arch/arm/mm/ptdump_debugfs.c
index 598b63661..6a62bceab 100644
--- a/arch/arm/mm/ptdump_debugfs.c
+++ b/arch/arm/mm/ptdump_debugfs.c
@@ -12,17 +12,7 @@ static int ptdump_show(struct seq_file *m, void *v)
 	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 ptdump_debugfs_register(struct ptdump_info *info, const char *name)
 {
-- 
2.23.0