Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 26/76] serial: also set the uartclk value in resume after goes to highspeed | Date | Wed, 16 Mar 2011 14:11:56 -0700 |
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From: Yin Kangkai <kangkai.yin@linux.intel.com>
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 CC: stable@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 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/tty/serial/8250.c b/drivers/tty/serial/8250.c index 3975df6..c10a6a9 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); } -- 1.7.4.1
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