From: Sasha Levin <sashal@kernel.org>
To: Rob Clark <robdclark@chromium.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
stable@vger.kernel.org, Stephen Boyd <sboyd@kernel.org>,
Stephen Boyd <swboyd@chromium.org>,
Jordan Crouse <jcrouse@codeaurora.org>,
Sean Paul <seanpaul@chromium.org>,
linux-arm-msm <linux-arm-msm@vger.kernel.org>,
dri-devel <dri-devel@lists.freedesktop.org>,
freedreno <freedreno@lists.freedesktop.org>
Subject: Re: [PATCH AUTOSEL 5.2 42/76] drm/msm: stop abusing dma_map/unmap for cache
Date: Tue, 13 Aug 2019 22:03:14 -0400 [thread overview]
Message-ID: <20190814020314.GG17747@sasha-vm> (raw)
In-Reply-To: <CAJs_Fx4ddE-85uA3S+YLPat4uX8Mk9zRU2SFm2xmGgmAFWPEyg@mail.gmail.com>
On Fri, Aug 02, 2019 at 05:14:35PM -0700, Rob Clark wrote:
>Hi Sasha,
>
>It's probably best *not* to backport this patch.. drm/msm abuses the
>DMA API in a way that it is not intended be used, to work around the
>lack of cache sync API exported to kernel modules on arm/arm64. I
>couldn't really guarantee that this patch does the right thing on
>older versions of DMA API, so best to leave things as they were.
Now dropped, thank you.
--
Thanks,
Sasha
prev parent reply other threads:[~2019-08-14 2:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190802131951.11600-1-sashal@kernel.org>
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 41/76] drm/msm/dpu: Correct dpu encoder spinlock initialization Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 42/76] drm/msm: stop abusing dma_map/unmap for cache Sasha Levin
2019-08-03 0:14 ` Rob Clark
2019-08-14 2:03 ` Sasha Levin [this message]
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