On Thu, Mar 08, 2007 at 06:32:29PM -0500, Robin Getz wrote: > On Thu 8 Mar 2007 15:40, Russell King pondered: > > On Thu, Mar 08, 2007 at 03:23:39PM -0500, Robin Getz wrote: > > > Right - We both agree - And setting console=/dev/null in the bootargs > > > still does not help. > > > > Ok, good. > > > > > When the kernel initializes the UART Port, it asserts RTS - which > > > confuses the host it is attached to (in this case, the Linux system > > > is the serial peripheral). > > > > ... which occurs /after/ userspace is up and running, when sysfs is > > available. So putting it in sysfs is reasonable. > > Hmm - maybe I don't understand things then. > > Today - RTS gets asserted when serial_core calls uart_startup(), which is > pretty early in the boot process (unless it is loaded as a module - which I'm > not doing).
uart_startup() is called when something opens a serial port. There's two points which that happens: 1. when you have serial console enabled, and the kernel opens /dev/console before starting userspace. 2. when userspace opens a serial port. If you're not using a serial console (and you don't have an utterly broken /dev nodes - iow incorrect /dev/console entry), then (1) doesn't apply. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
