From: arnd@arndb•de (Arnd Bergmann)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH] USB: set device dma_mask without reference to global data
Date: Wed, 8 May 2013 01:42:11 +0200 [thread overview]
Message-ID: <201305080142.12025.arnd@arndb.de> (raw)
In-Reply-To: <20130507230445.GC9105@kroah.com>
On Wednesday 08 May 2013, Greg Kroah-Hartman wrote:
> On Tue, May 07, 2013 at 04:53:52PM -0600, Stephen Warren wrote:
> > From: Stephen Warren <swarren@nvidia•com>
> > Suggested-by: Arnd Bergmann <arnd@arndb•de>
> > Signed-off-by: Stephen Warren <swarren@nvidia•com>
>
> So this needs to go in for 3.10, right? Any older kernels as well? If
> so, which ones?
The fix should definitely go into 3.10, but I'd suggest waiting with
the backport for a couple of -rc releases to avoid possible regressions.
We know that the current code is broken, but few people fully understand
what is going on with coherent_dma_mask, so it might cause new problems
in combination with some other unknown bug, and I don't see this as
urgent: none of the ARM defconfigs build this driver as a loadable
module and there is no bug in the built-in case. For some reason, only
the ARM back-end drivers are broken.
The first occurence was apparently in 3.3, but only in ehci-tegra.c,
while the other drivers subsequently copied the bug.
Arnd
next prev parent reply other threads:[~2013-05-07 23:42 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-07 22:53 [PATCH] USB: set device dma_mask without reference to global data Stephen Warren
2013-05-07 23:04 ` Greg Kroah-Hartman
2013-05-07 23:42 ` Arnd Bergmann [this message]
2013-05-08 14:14 ` Alan Stern
2013-05-08 15:10 ` Arnd Bergmann
2013-05-09 21:33 ` Russell King - ARM Linux
2013-05-08 1:13 ` Peter Chen
2013-05-08 2:26 ` Stephen Warren
2013-05-08 2:54 ` Peter Chen
2013-05-08 7:11 ` Matthijs Kooijman
2013-05-08 7:28 ` Matthijs Kooijman
2013-05-08 13:50 ` Rob Herring
2013-05-08 14:07 ` Arnd Bergmann
2013-05-08 7:24 ` Arnd Bergmann
2013-05-09 21:39 ` Russell King - ARM Linux
2013-05-08 22:42 ` Stephen Warren
2013-05-09 21:36 ` Russell King - ARM Linux
2013-05-08 5:11 ` Tony Prisk
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