From: Yin Kangkai Date: Wed, 9 Feb 2011 03:34:20 +0000 (+0800) Subject: serial: also set the uartclk value in resume after goes to highspeed X-Git-Tag: firefly_0821_release~7613^2~2198^2~51 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=95926d2db6256e08d06b753752a0d903a0580acc;p=firefly-linux-kernel-4.4.55.git serial: also set the uartclk value in resume after goes to highspeed For any reason if the NS16550A was not work in high speed mode (e.g. we hold NS16550A from going to high speed mode in autoconfig_16550a()), now we are resume from suspend, we should also set the uartclk to the correct value. Otherwise it is still the old 1843200 and that will bring issues. CC: Greg Kroah-Hartman CC: David Woodhouse CC: linux-kernel@vger.kernel.org CC: stable@kernel.org Signed-off-by: Yin Kangkai Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/serial/8250.c b/drivers/tty/serial/8250.c index 3975df6f7fdb..c10a6a909c76 100644 --- a/drivers/tty/serial/8250.c +++ b/drivers/tty/serial/8250.c @@ -3036,6 +3036,7 @@ void serial8250_resume_port(int line) serial_outp(up, 0x04, tmp); serial_outp(up, UART_LCR, 0); + up->port.uartclk = 921600*16; } uart_resume_port(&serial8250_reg, &up->port); }