From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Greg KH <gregkh@linuxfoundation.org>,
Frederic Danis <frederic.danis@linux.intel.com>
Cc: linux-serial@vger.kernel.org, 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"
Date: Tue, 06 Oct 2015 17:39:37 +0300 [thread overview]
Message-ID: <1444142377.8361.438.camel@linux.intel.com> (raw)
In-Reply-To: <20151006135503.GA13250@kroah.com>
On Tue, 2015-10-06 at 14:55 +0100, Greg KH wrote:
> 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?
No.
P.S. Unfortunately it's not easy to reproduce on our side, so I trust
Frederic on this.
>
> Frederic, don't you want to see this backported to 4.0 and newer?
>
> thanks,
>
> greg k-h
--
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy
WARNING: multiple messages have this Message-ID (diff)
From: Andy Shevchenko <andriy.shevchenko-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
To: Greg KH
<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>,
Frederic Danis
<frederic.danis-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Cc: linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
peter-WaGBZJeGNqdsbIuE7sb01tBPR1lH4CV8@public.gmane.org,
linux-bluetooth-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
heikki.krogerus-VuQAYsv1563Yd54FQh9/CA@public.gmane.org,
marcel-kz+m5ild9QBg9hUCZPvPmw@public.gmane.org
Subject: Re: [PATCH v2] Revert "serial: 8250_dma: don't bother DMA with small transfers"
Date: Tue, 06 Oct 2015 17:39:37 +0300 [thread overview]
Message-ID: <1444142377.8361.438.camel@linux.intel.com> (raw)
In-Reply-To: <20151006135503.GA13250-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
On Tue, 2015-10-06 at 14:55 +0100, Greg KH wrote:
> 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-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> > ---
> > v2: Re-send to correct people
> >
> > drivers/tty/serial/8250/8250_dma.c | 4 ----
> > 1 file changed, 4 deletions(-)
>
> Andy, any objections?
No.
P.S. Unfortunately it's not easy to reproduce on our side, so I trust
Frederic on this.
>
> Frederic, don't you want to see this backported to 4.0 and newer?
>
> thanks,
>
> greg k-h
--
Andy Shevchenko <andriy.shevchenko-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Intel Finland Oy
next prev parent reply other threads:[~2015-10-06 14:39 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-06 13:08 [PATCH v2] Revert "serial: 8250_dma: don't bother DMA with small transfers" Frederic Danis
2015-10-06 13:08 ` Frederic Danis
2015-10-06 13:55 ` Greg KH
2015-10-06 13:55 ` Greg KH
2015-10-06 14:23 ` Frederic Danis
2015-10-06 14:23 ` Frederic Danis
2015-10-09 14:45 ` Frederic Danis
2015-10-09 14:45 ` Frederic Danis
2015-10-09 14:48 ` Andy Shevchenko
2015-10-09 14:48 ` Andy Shevchenko
2015-10-09 15:09 ` Fabio Estevam
2015-10-09 15:09 ` Fabio Estevam
2015-10-06 14:39 ` Andy Shevchenko [this message]
2015-10-06 14:39 ` Andy Shevchenko
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