linux-kernel - [PATCH v1 2/2] serial: 8250_pericom: Re-enable higher baud rates

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Message-Id: <20211117145750.43911-3-andriy.shevchenko@linux.intel.com>
Date:   Wed, 17 Nov 2021 16:57:50 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Jay Dolan <jay.dolan@...esio.com>,
        linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org
Cc:     Jiri Slaby <jirislaby@...nel.org>
Subject: [PATCH v1 2/2] serial: 8250_pericom: Re-enable higher baud rates

From: Jay Dolan <jay.dolan@...esio.com>

Add UPF_MAGIC_MULTIPLIER to the port flags since there is now
range checking in serial8250_get_baud_rate() in 8250_port.c.

Signed-off-by: Jay Dolan <jay.dolan@...esio.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/tty/serial/8250/8250_pericom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/8250/8250_pericom.c b/drivers/tty/serial/8250/8250_pericom.c
index 322c3b743a38..e1b6a64da5c9 100644
--- a/drivers/tty/serial/8250/8250_pericom.c
+++ b/drivers/tty/serial/8250/8250_pericom.c
@@ -119,7 +119,7 @@ static int pericom8250_probe(struct pci_dev *pdev, const struct pci_device_id *i
 	uart.port.private_data = pericom;
 	uart.port.iotype = UPIO_MEM;
 	uart.port.uartclk = PERICOM8250_DEFAUL_BAUD_RATE * 16;
-	uart.port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
+	uart.port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ | UPF_MAGIC_MULTIPLIER;
 	uart.port.set_divisor = pericom_do_set_divisor;
 	for (i = 0; i < nr && i < maxnr; i++) {
 		unsigned int offset = (i == 3 && nr == 4) ? 0x38 : i * 0x8;
-- 
2.33.0