linux-kernel - [PATCH] md/raid: Replace a seq_printf() call by seq

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Date:   Mon, 1 Jul 2019 17:28:13 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     linux-raid@...r.kernel.org, Shaohua Li <shli@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] md/raid: Replace a seq_printf() call by seq_putc() in three
 functions

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Mon, 1 Jul 2019 17:10:13 +0200

A single character (depending on a condition check) should be put
into a sequence. Thus use the corresponding function “seq_putc”.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/md/raid1.c  | 4 ++--
 drivers/md/raid10.c | 3 ++-
 drivers/md/raid5.c  | 3 ++-
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 34e26834ad28..769d79a1d2cf 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1597,7 +1597,7 @@ static void raid1_status(struct seq_file *seq, struct mddev *mddev)
 	rcu_read_lock();
 	for (i = 0; i < conf->raid_disks; i++) {
 		struct md_rdev *rdev = rcu_dereference(conf->mirrors[i].rdev);
-		seq_printf(seq, "%s",
-			   rdev && test_bit(In_sync, &rdev->flags) ? "U" : "_");
+		seq_putc(seq,
+			 rdev && test_bit(In_sync, &rdev->flags) ? 'U' : '_');
 	}
 	rcu_read_unlock();
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 8a1354a08a1a..4e7da5dcbf86 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1572,6 +1572,7 @@ static void raid10_status(struct seq_file *seq, struct mddev *mddev)
 	rcu_read_lock();
 	for (i = 0; i < conf->geo.raid_disks; i++) {
 		struct md_rdev *rdev = rcu_dereference(conf->mirrors[i].rdev);
-		seq_printf(seq, "%s", rdev && test_bit(In_sync, &rdev->flags) ? "U" : "_");
+		seq_putc(seq,
+			 rdev && test_bit(In_sync, &rdev->flags) ? 'U' : '_');
 	}
 	rcu_read_unlock();
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 3de4e13bde98..4b0e93869801 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -7510,6 +7510,7 @@ static void raid5_status(struct seq_file *seq, struct mddev *mddev)
 	rcu_read_lock();
 	for (i = 0; i < conf->raid_disks; i++) {
 		struct md_rdev *rdev = rcu_dereference(conf->disks[i].rdev);
-		seq_printf (seq, "%s", rdev && test_bit(In_sync, &rdev->flags) ? "U" : "_");
+		seq_putc(seq,
+			 rdev && test_bit(In_sync, &rdev->flags) ? 'U' : '_');
 	}
 	rcu_read_unlock();
--
2.22.0