[PATCH] tty: serial: 8250: remove U6715 16550A auto-detection

Philippe Langlais
2013-03-19T19:58:28Z

The auto-detection based on 64 bytes fifo size causes troubles
for the identification of the MultiTechZPX Modems (pci 11c1:0480).
They loose the ability to do hardware flow control
(specifically CTS is never set).

Signed-off-by: Philippe Langlais <philippe.langlais@st.com>
---
drivers/tty/serial/8250/8250.c | 9 ---------
1 file changed, 9 deletions(-)

diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c
index cf6a538..3255014 100644
--- a/drivers/tty/serial/8250/8250.c
+++ b/drivers/tty/serial/8250/8250.c
@@ -1026,15 +1026,6 @@ static void autoconfig_16550a(struct uart_8250_port *up)

return;
}
-
- /*
- * We distinguish between 16550A and U6 16550A by counting
- * how many bytes are in the FIFO.
- */
- if (up->port.type == PORT_16550A && size_fifo(up) == 64) {
- up->port.type = PORT_U6_16550A;
- up->capabilities |= UART_CAP_AFE;
- }
}

/*
--
1.7.9.5