Re: [PATCH 1/1] ARM: exynos_defconfig: Disable IOMMU support
From: Inki Dae
Date: Mon Mar 09 2015 - 22:50:15 EST
On 2015ë 03ì 07ì 00:07, Javier Martinez Canillas wrote:
> Hello Inki,
> On 03/06/2015 02:32 PM, Inki Dae wrote:
>>> Another interesting data point is that the error in next-20150303 for
>>> these 2 boards was the NULL pointer dereference in exynos_plane_destroy
>>> that I got with 4.0-rc2 (when IOMMU is disabled) in Snow and Peach Pit.
>> I think the NULL pointer dereference issue may be fixed with below patch
>> I merged to exynos-drm-fixes just a while ago,
>> Could you test it with this patch again?
> Thanks, I tested v4.0-rc2 + the patch to disable IOMMU + the patch you
> mentioned and the crash does not happen anymore in Peach Pit and Snow.
>>> Another thing that may be useful to detect these issues early is to have
>>> exynos-drm-next be pulled by linux-next since otherwise the integration
>>> is not tested until the changes are picked by the DRM maintainer.
> I know that I may sound like a broken record but could you please make
> sure that your tree is included in linux-next?
Got it. I got several requests before. I have created a new branch -
exynos-drm/for-next - based on top of drm-next, which would have same
patch set as existing exynos-drm-next.
I will request Stephen Rothwell to merge remote-tracking branch,
> That way the fix could be tested by all the machines that are testing
> linux-next daily since right now Exynos will still be broken until you
> send a pull request to the DRM maintainer.
> So it would be nice to get the changes as soon as possible into -next
> to avoid a recurrent error to mask other possible new issues.
> Best regards,
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