linux-kernel - Re: [PATCH 1/4] cdc-acm: Fix long standing abuse of tty->low

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Message-Id: <200904141618.05824.oliver@neukum.org>
Date:	Tue, 14 Apr 2009 16:18:04 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] cdc-acm: Fix long standing abuse of tty->low_latency

Am Dienstag 14 April 2009 15:57:36 schrieb Alan Cox:
> ACM sets the low latency flag but calls the flip buffer routines from IRQ
> context which isn't permitted (and as of 2.6.29 causes a warning hence this
> one was caught)
>
> Fortunatelt ACM doesn't need to set this flag in the first place as it only
> set it to work around problems in ancient (pre tty flip rewrite) kernels.

Very well, I am going to kill these in the USB serial drivers.

	Regards
		Oliver

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