sc16is7xx: missing unregister/delete driver on error in sc16is7xx_init()

[ Upstream commit ac0cdb3d990108df795b676cd0d0e65ac34b2273 ]

Add the missing uart_unregister_driver() and i2c_del_driver() before return
from sc16is7xx_init() in the error handling case.

Signed-off-by: Mao Wenan <maowenan@huawei.com>
Reviewed-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>

diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index ea6b62c..82451bb 100644 (file)
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -1482,7 +1482,7 @@ static int __init sc16is7xx_init(void)
        ret = i2c_add_driver(&sc16is7xx_i2c_uart_driver);
        if (ret < 0) {
                pr_err("failed to init sc16is7xx i2c --> %d\n", ret);
-               return ret;
+               goto err_i2c;
        }
 #endif
 
@@ -1490,10 +1490,18 @@ static int __init sc16is7xx_init(void)
        ret = spi_register_driver(&sc16is7xx_spi_uart_driver);
        if (ret < 0) {
                pr_err("failed to init sc16is7xx spi --> %d\n", ret);
-               return ret;
+               goto err_spi;
        }
 #endif
        return ret;
+
+err_spi:
+#ifdef CONFIG_SERIAL_SC16IS7XX_I2C
+       i2c_del_driver(&sc16is7xx_i2c_uart_driver);
+#endif
+err_i2c:
+       uart_unregister_driver(&sc16is7xx_uart);
+       return ret;
 }
 module_init(sc16is7xx_init);