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Subject[PATCH serial v2] sc16is7xx: missing unregister/delete driver on error in sc16is7xx_init()
Date
Add the missing uart_unregister_driver() and i2c_del_driver() before return
from sc16is7xx_init() in the error handling case.

Reviewed-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Mao Wenan <maowenan@huawei.com>
---
v1->v2: fix compile warning if CONFIG_SERIAL_SC16IS7XX_SPI is not exist.
drivers/tty/serial/sc16is7xx.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index 268098681856..b9e5941ce767 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -1509,7 +1509,7 @@ 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

@@ -1517,10 +1517,20 @@ 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;
+
+#ifdef CONFIG_SERIAL_SC16IS7XX_SPI
+err_spi:
+#endif
+#ifdef CONFIG_SERIAL_SC16IS7XX_I2C
+ i2c_del_driver(&sc16is7xx_i2c_uart_driver);
+err_i2c:
+#endif
+ uart_unregister_driver(&sc16is7xx_uart);
+ return ret;
}
module_init(sc16is7xx_init);

--
2.20.1
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