linux-kernel - [PATCH v2 3/3] serial: 8250: Remove check for specific mctrl_gpio

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Message-ID: <20190801184505.17239-3-frieder.schrempf@kontron.de>
Date:   Thu, 1 Aug 2019 18:45:32 +0000
From:   Schrempf Frieder <frieder.schrempf@...tron.de>
To:     "u.kleine-koenig@...gutronix.de" <u.kleine-koenig@...gutronix.de>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        "linux-imx@....com" <linux-imx@....com>
CC:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "geert+renesas@...der.be" <geert+renesas@...der.be>,
        Schrempf Frieder <frieder.schrempf@...tron.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>,
        "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 3/3] serial: 8250: Remove check for specific
 mctrl_gpio_init() return value

From: Frieder Schrempf <frieder.schrempf@...tron.de>

Now that the mctrl_gpio code returns NULL instead of ERR_PTR(-ENOSYS)
in cases when CONFIG_GPIOLIB is disabled, we can safely remove this
check.

Signed-off-by: Frieder Schrempf <frieder.schrempf@...tron.de>
---
 drivers/tty/serial/8250/8250_core.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index df3bcc0b2d74..e682390ce0de 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -1026,10 +1026,8 @@ int serial8250_register_8250_port(struct uart_8250_port *up)
 		if (!has_acpi_companion(uart->port.dev)) {
 			gpios = mctrl_gpio_init(&uart->port, 0);
 			if (IS_ERR(gpios)) {
-				if (PTR_ERR(gpios) != -ENOSYS) {
-					ret = PTR_ERR(gpios);
-					goto out_unlock;
-				}
+				ret = PTR_ERR(gpios);
+				goto out_unlock;
 			} else {
 				uart->gpios = gpios;
 			}
-- 
2.17.1