From: Jim Quinlan <jquin...@broadcom.com>
This commit has of_platform_serial_probe() check specifically for the
"brcm,bcm7271-uart" and whether its companion driver is enabled. If it
is the case, and the clock provider is not ready, we want to make sure
that when the 8250_bcm7271.c driver returns EPROBE_DEFER, we are not
getting the UART registered via 8250_of.c.
Signed-off-by: Jim Quinlan <jquin...@broadcom.com>
---
drivers/tty/serial/8250/8250_of.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/tty/serial/8250/8250_of.c
b/drivers/tty/serial/8250/8250_of.c
index 65e9045dafe6..aa458f3c6644 100644
--- a/drivers/tty/serial/8250/8250_of.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -192,6 +192,10 @@ static int of_platform_serial_probe(struct platform_device
*ofdev)
u32 tx_threshold;
int ret;
+ if (IS_ENABLED(CONFIG_SERIAL_8250_BCM7271) &&
+ of_device_is_compatible(ofdev->dev.of_node, "brcm,bcm7271-uart"))
+ return -ENODEV;
+
port_type = (unsigned long)of_device_get_match_data(&ofdev->dev);
if (port_type == PORT_UNKNOWN)
return -EINVAL;
--
2.17.1
