linux-kernel - [PATCH v8 03/10] serial: sc16is7xx: remove obsolete out

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Date:   Wed,  7 Jun 2023 10:05:17 -0400
From:   Hugo Villeneuve <hugo@...ovil.com>
To:     gregkh@...uxfoundation.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        jirislaby@...nel.org, jringle@...dpoint.com,
        jesse.sung@...onical.com, isaac.true@...onical.com,
        l.perczak@...lintechnologies.com, tomasz.mon@...lingroup.com
Cc:     linux-serial@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, hugo@...ovil.com,
        linux-gpio@...r.kernel.org,
        Hugo Villeneuve <hvilleneuve@...onoff.com>
Subject: [PATCH v8 03/10] serial: sc16is7xx: remove obsolete out_thread label

From: Hugo Villeneuve <hvilleneuve@...onoff.com>

Commit c8f71b49ee4d ("serial: sc16is7xx: setup GPIO controller later
in probe") moved GPIO setup code later in probe function. Doing so
also required to move ports cleanup code (out_ports label) after the
GPIO cleanup code.

After these moves, the out_thread label becomes misplaced and makes
part of the cleanup code illogical.

This patch remove the now obsolete out_thread label and make GPIO
setup code jump to out_ports label if it fails.

Fixes: c8f71b49ee4d ("serial: sc16is7xx: setup GPIO controller later in probe")
Signed-off-by: Hugo Villeneuve <hvilleneuve@...onoff.com>
---

I put a "Fixes" tag, even if the patch doesn't fix a "real" bug.

It could have been merged with later patch 6/10, but then the explanation
for the change would have been somewhat lost in the noise, and I think it
is important to clearly state in the logs why this change was done, to fix
a "logical" regression introduced by a previous patch.

I can remove the tag if it is deemed non appropriate.

 drivers/tty/serial/sc16is7xx.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index 0c903d44429c..9e9856846643 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -1516,7 +1516,7 @@ static int sc16is7xx_probe(struct device *dev,
 		s->gpio.can_sleep	 = 1;
 		ret = gpiochip_add_data(&s->gpio, s);
 		if (ret)
-			goto out_thread;
+			goto out_ports;
 	}
 #endif

@@ -1542,8 +1542,6 @@ static int sc16is7xx_probe(struct device *dev,
 #ifdef CONFIG_GPIOLIB
 	if (devtype->nr_gpio)
 		gpiochip_remove(&s->gpio);
-
-out_thread:
 #endif

 out_ports:
-- 
2.30.2