linux-kernel - Re: [PATCH] [v4] tty/powerpc: introduce the ePAPR embedded hypervisor byte channel driver

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Date:	Thu, 25 Aug 2011 08:50:50 -0700
From:	Greg KH <greg@...ah.com>
To:	Timur Tabi <timur@...escale.com>
Cc:	sfr@...b.auug.org.au, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org
Subject: Re: [PATCH] [v4] tty/powerpc: introduce the ePAPR embedded
 hypervisor byte channel driver

On Thu, Aug 25, 2011 at 10:32:25AM -0500, Timur Tabi wrote:
> The ePAPR embedded hypervisor specification provides an API for "byte
> channels", which are serial-like virtual devices for sending and receiving
> streams of bytes.  This driver provides Linux kernel support for byte
> channels via three distinct interfaces:
> 
> 1) An early-console (udbg) driver.  This provides early console output
> through a byte channel.  The byte channel handle must be specified in a
> Kconfig option.
> 
> 2) A normal console driver.  Output is sent to the byte channel designated
> for stdout in the device tree.  The console driver is for handling kernel
> printk calls.
> 
> 3) A tty driver, which is used to handle user-space input and output.  The
> byte channel used for the console is designated as the default tty.
> 
> Signed-off-by: Timur Tabi <timur@...escale.com>

No, this doesn't work, I need just a fix, as I took your previous patch
already.

greg k-h
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