linux-kernel - [PATCH] serial: uartps: Fix error path when alloc failed

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Date:   Wed,  5 Dec 2018 14:21:01 +0100
From:   Michal Simek <michal.simek@...inx.com>
To:     linux-kernel@...r.kernel.org, monstr@...str.eu,
        michal.simek@...inx.com,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
Cc:     Jiri Slaby <jslaby@...e.com>, linux-serial@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] serial: uartps: Fix error path when alloc failed

When cdns_uart_console allocation failed there is a need to also clear
ID from ID list.

Fixes: ae1cca3fa347 ("serial: uartps: Change uart ID port allocation")
Signed-off-by: Michal Simek <michal.simek@...inx.com>
---

 drivers/tty/serial/xilinx_uartps.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 9cdc36be5b13..c6d38617d622 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -1508,8 +1508,10 @@ static int cdns_uart_probe(struct platform_device *pdev)
 #ifdef CONFIG_SERIAL_XILINX_PS_UART_CONSOLE
 	cdns_uart_console = devm_kzalloc(&pdev->dev, sizeof(*cdns_uart_console),
 					 GFP_KERNEL);
-	if (!cdns_uart_console)
-		return -ENOMEM;
+	if (!cdns_uart_console) {
+		rc = -ENOMEM;
+		goto err_out_id;
+	}
 
 	strncpy(cdns_uart_console->name, CDNS_UART_TTY_NAME,
 		sizeof(cdns_uart_console->name));
-- 
1.9.1