* [PATCH] serial: 8250_pxa: avoid autodetecting the port type
@ 2020-02-19 8:01 Lubomir Rintel
0 siblings, 0 replies; only message in thread
From: Lubomir Rintel @ 2020-02-19 8:01 UTC (permalink / raw)
To: Greg Kroah-Hartman; +Cc: linux-serial, linux-kernel, Lubomir Rintel
If we're unlucky enough that this drivers binds to a mrvl,mmp-uart device
on a MMP3, the port type gets detected as 16550A instead of XScale, and it
won't work. Other drivers that may bind to the same hardware are 8250_of
and, god forbid, serial_pxa.
Force the port type, we know it's a PORT_XSCALE.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
---
drivers/tty/serial/8250/8250_pxa.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/8250/8250_pxa.c b/drivers/tty/serial/8250/8250_pxa.c
index c47188860e325..11612d174716f 100644
--- a/drivers/tty/serial/8250/8250_pxa.c
+++ b/drivers/tty/serial/8250/8250_pxa.c
@@ -123,7 +123,7 @@ static int serial_pxa_probe(struct platform_device *pdev)
uart.port.regshift = 2;
uart.port.irq = irqres->start;
uart.port.fifosize = 64;
- uart.port.flags = UPF_IOREMAP | UPF_SKIP_TEST;
+ uart.port.flags = UPF_IOREMAP | UPF_SKIP_TEST | UPF_FIXED_TYPE;
uart.port.dev = &pdev->dev;
uart.port.uartclk = clk_get_rate(data->clk);
uart.port.pm = serial_pxa_pm;
--
2.24.1
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