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Message-ID: <20230602070007.59268-1-tony@atomide.com>
Date: Fri, 2 Jun 2023 10:00:05 +0300
From: Tony Lindgren <tony@...mide.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jiri Slaby <jirislaby@...nel.org>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@...el.com>,
Dhruva Gole <d-gole@...com>,
Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
John Ogness <john.ogness@...utronix.de>,
Johan Hovold <johan@...nel.org>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
Vignesh Raghavendra <vigneshr@...com>,
linux-omap@...r.kernel.org, linux-serial@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/1] serial: core: Fix error handling for serial_core_ctrl_device_add()
Checking for NULL is incorrect as serial_base_ctrl_add() uses ERR_PTR().
Let's also pass any returned error along, there's no reason to translate
all errors to -ENODEV.
Fixes: 84a9582fd203 ("serial: core: Start managing serial controllers to enable runtime PM")
Signed-off-by: Tony Lindgren <tony@...mide.com>
---
Changes since v1:
- Stop translating all errors to -ENODEV
- There's no need to use IS_ERR_OR_NULL() as noted by Jiri
---
drivers/tty/serial/serial_core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -3342,8 +3342,8 @@ int serial_core_register_port(struct uart_driver *drv, struct uart_port *port)
ctrl_dev = serial_core_ctrl_find(drv, port->dev, port->ctrl_id);
if (!ctrl_dev) {
new_ctrl_dev = serial_core_ctrl_device_add(port);
- if (!new_ctrl_dev) {
- ret = -ENODEV;
+ if (IS_ERR(new_ctrl_dev)) {
+ ret = PTR_ERR(new_ctrl_dev);
goto err_unlock;
}
ctrl_dev = new_ctrl_dev;
--
2.41.0
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