4.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
commit 7defa77d2baca4d6eb85234f10f38ab618332e75 upstream.
Fix to return a negative error code from the port register error
handling case instead of 0, as done elsewhere in this function.
Fixes: 39be40ce066d ("serial: 8250_uniphier: fix serial port index in private data")
Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
Acked-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/tty/serial/8250/8250_uniphier.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/tty/serial/8250/8250_uniphier.c
+++ b/drivers/tty/serial/8250/8250_uniphier.c
@@ -250,12 +250,13 @@ static int uniphier_uart_probe(struct pl
up.dl_read = uniphier_serial_dl_read;
up.dl_write = uniphier_serial_dl_write;
- priv->line = serial8250_register_8250_port(&up);
- if (priv->line < 0) {
+ ret = serial8250_register_8250_port(&up);
+ if (ret < 0) {
dev_err(dev, "failed to register 8250 port\n");
clk_disable_unprepare(priv->clk);
return ret;
}
+ priv->line = ret;
platform_set_drvdata(pdev, priv);