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Date:   Sun, 16 Oct 2022 09:30:15 -0400
From:   Sasha Levin <sashal@kernel.org>
To:     John Garry <john.garry@huawei.com>
Cc:     linux-kernel@vger.kernel.org, stable@vger.kernel.org,
        Yicong Yang <yangyicong@hisilicon.com>,
        Will Deacon <will@kernel.org>,
        Mathieu Poirier <mathieu.poirier@linaro.org>, joro@8bytes.org,
        robin.murphy@arm.com, baolu.lu@linux.intel.com, jgg@ziepe.ca,
        tglx@linutronix.de, shameerali.kolothum.thodi@huawei.com,
        christophe.jaillet@wanadoo.fr,
        linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev
Subject: Re: [PATCH AUTOSEL 5.15 10/47] iommu/arm-smmu-v3: Make default
 domain type of HiSilicon PTT device to identity
Message-ID: <Y0wHZxMV2pRVjvyN@sashalap>
References: <20221013002124.1894077-1-sashal@kernel.org>
 <20221013002124.1894077-10-sashal@kernel.org>
 <4ffc662d-5c73-5047-81d5-ad78ca3a7d7e@huawei.com>
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On Thu, Oct 13, 2022 at 08:07:46AM +0100, John Garry wrote:
>On 13/10/2022 01:20, Sasha Levin wrote:
>>From: Yicong Yang<yangyicong@hisilicon.com>
>>
>>[ Upstream commit 24b6c7798a0122012ca848ea0d25e973334266b0 ]
>>
>>The DMA operations of HiSilicon PTT device can only work properly with
>>identical mappings. So add a quirk for the device to force the domain
>>as passthrough.
>>
>>Acked-by: Will Deacon<will@kernel.org>
>>Signed-off-by: Yicong Yang<yangyicong@hisilicon.com>
>>Reviewed-by: John Garry<john.garry@huawei.com>
>>Link:https://lore.kernel.org/r/20220816114414.4092-2-yangyicong@huawei.com
>>Signed-off-by: Mathieu Poirier<mathieu.poirier@linaro.org>
>>Signed-off-by: Sasha Levin<sashal@kernel.org>
>>---
>>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 21 +++++++++++++++++++++
>>  1 file changed, 21 insertions(+)
>
>I don't think that this commit should be backported to any stable 
>tree. It's only required for a new driver.

I'll drop it, thanks!
-- 
Thanks,
Sasha