Return-Path: <cyrus@holtmann.org>
Date: Tue, 6 Oct 2015 14:55:03 +0100
From: Greg KH <gregkh@linuxfoundation.org>
To: Frederic Danis <frederic.danis@linux.intel.com>
Cc: linux-serial@vger.kernel.org, andriy.shevchenko@linux.intel.com,
	peter@hurleysoftware.com, linux-bluetooth@vger.kernel.org,
	heikki.krogerus@linux.intel.com, marcel@holtmann.org
Subject: Re: [PATCH v2] Revert "serial: 8250_dma: don't bother DMA with small
 transfers"
Message-ID: <20151006135503.GA13250@kroah.com>
References: <1444136920-17969-1-git-send-email-frederic.danis@linux.intel.com>
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In-Reply-To: <1444136920-17969-1-git-send-email-frederic.danis@linux.intel.com>
List-ID: <linux-bluetooth.vger.kernel.org>

On Tue, Oct 06, 2015 at 03:08:40PM +0200, Frederic Danis wrote:
> This reverts commit 9119fba0cfeda6d415c9f068df66838a104b87cb.
> 
> This commit prevents from sending "big" file using Bluetooth.
> When sending a lot of data quickly through the Bluetooth interface, and
> after a variable amount of data sent, transfer fails with error:
>     kernel: [  415.247453] Bluetooth: hci0 hardware error 0x00
> 
> Found on T100TA.
> 
> After reverting this commit, send works fine for any file size.
> 
> Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com>
> ---
> v2: Re-send to correct people
> 
>  drivers/tty/serial/8250/8250_dma.c | 4 ----
>  1 file changed, 4 deletions(-)

Andy, any objections?

Frederic, don't you want to see this backported to 4.0 and newer?

thanks,

greg k-h