After switching the serial interface of the Moxa RS232 PCIe boards, it
fails to reset to RS232 when attempting to reload 8250_pci driver.
This patch set RS232 as the default setting during the initialization of
Moxa PCIe board.
Signed-off-by: Crescent CY Hsieh <crescentcy.hsieh@xxxxxxxx>
---
drivers/tty/serial/8250/8250_pci.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 8ccf691935b7..0d35c77fad9e 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -2039,12 +2039,13 @@ static int pci_moxa_init(struct pci_dev *dev)
unsigned short device = dev->device;
resource_size_t iobar_addr = pci_resource_start(dev, 2);
unsigned int num_ports = (device & 0x00F0) >> 4, i;
- u8 val;
+ u8 val, init_mode = MOXA_RS232;
if (!(pci_moxa_supported_rs(dev) & MOXA_SUPP_RS232)) {
- for (i = 0; i < num_ports; ++i)
- pci_moxa_set_interface(dev, i, MOXA_RS422);
+ init_mode = MOXA_RS422;
}
+ for (i = 0; i < num_ports; ++i)
+ pci_moxa_set_interface(dev, i, init_mode);
/*
* Enable hardware buffer to prevent break signal output when system boots up.
--
2.34.1
