Messages in this thread | | | Date | Thu, 17 May 2007 10:04:39 +0100 | From | Alan Cox <> | Subject | Re: [PATCH] NS16550A: Restore HS settings in EXCR2 on resume |
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On Thu, 17 May 2007 14:27:39 +0800 David Woodhouse <dwmw2@infradead.org> wrote:
> After a suspend/resume cycle, the UART may have been reset into > low-speed mode -- either because it's actually been reset, or because > the firmware pokes at the old-style divisor registers. If we detected it > as a NS16550A SuperIO chip in the first place and set baud_base to > 921600, then we should do so again in the resume path. > > This patch adds that code to serial8250_resume_port(), and also makes > serial8250_resume() actually call serial8250_resume_port() for each port > instead of just calling uart_resume_port() directly. And thus fixes > serial port operation after suspend/resume. > > It also fixes a bogus comment where we write the EXCR2 register with a > comment saying /* EXCR1 */ > > Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Acked-by: Alan Cox <alan@redhat.com>
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