Hi Vivek,
On Thu, Aug 30, 2018 at 08:15:38PM +0530, Vivek Gautam wrote:
> From: Sricharan R <sricha...@codeaurora.org>
>
> The smmu device probe/remove and add/remove master device callbacks
> gets called when the smmu is not linked to its master, that is without
> the context of the master device. So calling runtime apis in those places
> separately.
> Global locks are also initialized before enabling runtime pm as the
> runtime_resume() calls device_reset() which does tlb_sync_global()
> that ultimately requires locks to be initialized.
>
> Signed-off-by: Sricharan R <sricha...@codeaurora.org>
> [vivek: Cleanup pm runtime calls]
> Signed-off-by: Vivek Gautam <vivek.gau...@codeaurora.org>
> Reviewed-by: Tomasz Figa <tf...@chromium.org>
> Tested-by: Srinivas Kandagatla <srinivas.kandaga...@linaro.org>
> ---
> drivers/iommu/arm-smmu.c | 89
> +++++++++++++++++++++++++++++++++++++++++++-----
> 1 file changed, 81 insertions(+), 8 deletions(-)
This doesn't apply on my tree[1], possibly because I've got Robin's non-strict
invalidation queued there. However, that got me thinking -- how does this
work in conjunction with the timer-based TLB invalidation? Do we need to
rpm_{get,put} around flush_iotlb_all()? If so, do we still need the calls
in map/unmap when non-strict mode is in use?
Will
[1]
https://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git/log/?h=for-joerg/arm-smmu/updates
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