linux-kernel - Re: [PATCH] USB: serial: Fix read regression in 2.6.31.

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Date:	Fri, 9 Oct 2009 10:56:02 -0700
From:	Greg KH <greg@...ah.com>
To:	Johan Hovold <jhovold@...il.com>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	Alan Cox <alan@...rguk.ukuu.org.uk>, linux-usb@...r.kernel.org,
	e9hack <e9hack@...glemail.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] USB: serial: Fix read regression in 2.6.31.

On Sun, Sep 20, 2009 at 10:18:36PM +0200, Johan Hovold wrote:
> Use ASYNCB_INITIALIZED to determine when to stop reading.
> 
> Port count can no longer be used to determine when to stop reading from
> the device as it can be zero when the first read callbacks are made (see
> tty_port_block_til_read where port count is temporarily decremented
> during serial_open).
> 
> Signed-off-by: Johan Hovold <jhovold@...il.com>
> ---
> 
> Hi, 
> 
> Here's a patch which fixes the port count issue for all drivers. I only
> have access to an ftdi device at the moment so that's the only driver
> I've been able to test (against latest git with latest patches from
> Greg's tree). 

Hm, this doesn't apply on top of the other ftdi patches.  Could you
respin this?

thanks,

greg k-h
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