linux-kernel - [PATCH v2 1/6] gpiolib: cdev: simplify linereq

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Message-Id: <20220714020319.72952-2-warthog618@gmail.com>
Date:   Thu, 14 Jul 2022 10:03:14 +0800
From:   Kent Gibson <warthog618@...il.com>
To:     linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        brgl@...ev.pl, linus.walleij@...aro.org, dipenp@...dia.com,
        andy.shevchenko@...il.com
Cc:     Kent Gibson <warthog618@...il.com>
Subject: [PATCH v2 1/6] gpiolib: cdev: simplify linereq_free

The edge detector is only ever started after the line desc has been
determined, so move edge_detector_stop() inside the line desc check,
and merge the two checked regions into one.

Signed-off-by: Kent Gibson <warthog618@...il.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
---
 drivers/gpio/gpiolib-cdev.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpio/gpiolib-cdev.c b/drivers/gpio/gpiolib-cdev.c
index 0c9a63becfef..b44526e3630e 100644
--- a/drivers/gpio/gpiolib-cdev.c
+++ b/drivers/gpio/gpiolib-cdev.c
@@ -1460,15 +1460,15 @@ static ssize_t linereq_read(struct file *file,
 static void linereq_free(struct linereq *lr)
 {
 	unsigned int i;
-	bool hte = false;
+	bool hte;
 
 	for (i = 0; i < lr->num_lines; i++) {
-		if (lr->lines[i].desc)
+		if (lr->lines[i].desc) {
 			hte = !!test_bit(FLAG_EVENT_CLOCK_HTE,
 					 &lr->lines[i].desc->flags);
-		edge_detector_stop(&lr->lines[i], hte);
-		if (lr->lines[i].desc)
+			edge_detector_stop(&lr->lines[i], hte);
 			gpiod_free(lr->lines[i].desc);
+		}
 	}
 	kfifo_free(&lr->events);
 	kfree(lr->label);
-- 
2.37.1