linux-kernel - Re: [PATCH v2] PREEMPT_RT: USB serial gadget: Fix locking issue

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Message-ID: <20140522140948.GB11707@saruman.home>
Date:	Thu, 22 May 2014 09:09:48 -0500
From:	Felipe Balbi <balbi@...com>
To:	Jean-Jacques Hiblot <jjhiblot@...phandler.com>
CC:	<linux-kernel@...r.kernel.org>, <mingo@...nel.org>,
	<tglx@...utronix.de>, <gregkh@...uxfoundation.org>, <balbi@...com>
Subject: Re: [PATCH v2] PREEMPT_RT: USB serial gadget: Fix locking issue

Hi,

On Thu, May 22, 2014 at 11:58:48AM +0200, Jean-Jacques Hiblot wrote:
> With CONFIG_PREEMPT_RT_FULL the tty_flip_buffer_push(..) actions are executed
> immeditely (same behaviour as if low_latency flag was set). We thus have to
> release port_lock before callng tty_flip_buffer_push().
> 
> This issue resultst of commits:
> 44a0c019: USB: g_serial: don't set low_latency flag
> dc0cbd1b: serial: 8250: Call flush_to_ldisc when the irq is threaded
> 
> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@...phandler.com>

can you please resend with linux-usb in copy ?

-- 
balbi

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