From: Alexey Khoroshilov khoroshilov@ispras.ru
commit fa9ba3acb557e444fe4a736ab654f0d0a0fbccde upstream.
clk_disable_unprepare(info->clk) is missed in of_platform_serial_probe(), while irq_dispose_mapping(port->irq) is missed in of_platform_serial_setup().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov khoroshilov@ispras.ru Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org [sudip: adjust context] Signed-off-by: Sudip Mukherjee sudipm.mukherjee@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/tty/serial/8250/8250_of.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-)
--- a/drivers/tty/serial/8250/8250_of.c +++ b/drivers/tty/serial/8250/8250_of.c @@ -86,7 +86,7 @@ static int of_platform_serial_setup(stru ret = of_address_to_resource(np, 0, &resource); if (ret) { dev_warn(&ofdev->dev, "invalid address\n"); - goto out; + goto err_unprepare; }
spin_lock_init(&port->lock); @@ -132,7 +132,7 @@ static int of_platform_serial_setup(stru dev_warn(&ofdev->dev, "unsupported reg-io-width (%d)\n", prop); ret = -EINVAL; - goto out; + goto err_dispose; } }
@@ -162,7 +162,9 @@ static int of_platform_serial_setup(stru port->handle_irq = fsl8250_handle_irq;
return 0; -out: +err_dispose: + irq_dispose_mapping(port->irq); +err_unprepare: if (info->clk) clk_disable_unprepare(info->clk); return ret; @@ -194,7 +196,7 @@ static int of_platform_serial_probe(stru port_type = (unsigned long)match->data; ret = of_platform_serial_setup(ofdev, port_type, &port, info); if (ret) - goto out; + goto err_free;
switch (port_type) { case PORT_8250 ... PORT_MAX_8250: @@ -228,15 +230,18 @@ static int of_platform_serial_probe(stru break; } if (ret < 0) - goto out; + goto err_dispose;
info->type = port_type; info->line = ret; platform_set_drvdata(ofdev, info); return 0; -out: - kfree(info); +err_dispose: irq_dispose_mapping(port.irq); + if (info->clk) + clk_disable_unprepare(info->clk); +err_free: + kfree(info); return ret; }