Messages in this thread Patch in this message | | | Date | Mon, 21 Mar 2011 16:01:39 -0700 | From | Greg KH <> | Subject | [23/78] serial: also set the uartclk value in resume after goes to highspeed |
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2.6.38-stable review patch. If anyone has any objections, please let us know.
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From: Yin Kangkai <kangkai.yin@linux.intel.com>
commit 95926d2db6256e08d06b753752a0d903a0580acc upstream.
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 <greg@kroah.com> CC: David Woodhouse <dwmw2@infradead.org> CC: linux-kernel@vger.kernel.org Signed-off-by: Yin Kangkai <kangkai.yin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/tty/serial/8250.c | 1 + 1 file changed, 1 insertion(+)
--- 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); }
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