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| author | Ke Zhang <m202171830@hust.edu.cn> | 2023-04-28 11:16:36 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-13 19:55:46 +0900 |
| commit | 8ab5fc55d7f65d58a3c3aeadf11bdf60267cd2bd (patch) | |
| tree | 94ecd235d2b23dbb97f2db870d1fa071ca86e00e /drivers | |
| parent | f16182ed9d8430adfab77f5929c23756c94b0230 (diff) | |
| download | linux-stable-8ab5fc55d7f65d58a3c3aeadf11bdf60267cd2bd.tar.gz linux-stable-8ab5fc55d7f65d58a3c3aeadf11bdf60267cd2bd.tar.bz2 linux-stable-8ab5fc55d7f65d58a3c3aeadf11bdf60267cd2bd.zip | |
serial: arc_uart: fix of_iomap leak in `arc_serial_probe`
Smatch reports:
drivers/tty/serial/arc_uart.c:631 arc_serial_probe() warn:
'port->membase' from of_iomap() not released on lines: 631.
In arc_serial_probe(), if uart_add_one_port() fails,
port->membase is not released, which would cause a resource leak.
To fix this, I replace of_iomap with devm_platform_ioremap_resource.
Fixes: 8dbe1d5e09a7 ("serial/arc: inline the probe helper")
Signed-off-by: Ke Zhang <m202171830@hust.edu.cn>
Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn>
Link: https://lore.kernel.org/r/20230428031636.44642-1-m202171830@hust.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/serial/arc_uart.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c index 59e25f2b6632..4b2512eef577 100644 --- a/drivers/tty/serial/arc_uart.c +++ b/drivers/tty/serial/arc_uart.c @@ -606,10 +606,11 @@ static int arc_serial_probe(struct platform_device *pdev) } uart->baud = val; - port->membase = of_iomap(np, 0); - if (!port->membase) + port->membase = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(port->membase)) { /* No point of dev_err since UART itself is hosed here */ - return -ENXIO; + return PTR_ERR(port->membase); + } port->irq = irq_of_parse_and_map(np, 0); |