Add check for ioremap() and return the error if it fails in order to
guarantee the success of ioremap().
Fixes: 930cbf92db01 ("tty: serial: Add Nuvoton ma35d1 serial driver support")
Signed-off-by: Chen Ni <nichen@xxxxxxxxxxx>
---
drivers/tty/serial/ma35d1_serial.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/tty/serial/ma35d1_serial.c b/drivers/tty/serial/ma35d1_serial.c
index 465b1def9e11..4a9d1252de35 100644
--- a/drivers/tty/serial/ma35d1_serial.c
+++ b/drivers/tty/serial/ma35d1_serial.c
@@ -695,6 +695,9 @@ static int ma35d1serial_probe(struct platform_device *pdev)
up->port.iobase = res_mem->start;
up->port.membase = ioremap(up->port.iobase, MA35_UART_REG_SIZE);
+ if (!up->port.membase)
+ return -ENOMEM;
+
up->port.ops = &ma35d1serial_ops;
spin_lock_init(&up->port.lock);
--
2.25.1
