This is a note to let you know that I've just added the patch titled
iommu/mediatek: Set dma_mask for PGTABLE_PA_35_EN
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iommu-mediatek-set-dma_mask-for-pgtable_pa_35_en.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit cdc93e95ce8714cdadd703f0826f7243b720fcfe
Author: Yong Wu <yong.wu@xxxxxxxxxxxx>
Date: Thu Mar 16 18:14:45 2023 +0800
iommu/mediatek: Set dma_mask for PGTABLE_PA_35_EN
[ Upstream commit f045e9df6537175d02565f21616ac1a9dd59b61c ]
When we enable PGTABLE_PA_35_EN, the PA for pgtable may be 35bits.
Thus add dma_mask for it.
Fixes: 301c3ca12576 ("iommu/mediatek: Allow page table PA up to 35bit")
Signed-off-by: Chengci.Xu <chengci.xu@xxxxxxxxxxxx>
Signed-off-by: Yong Wu <yong.wu@xxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230316101445.12443-1-yong.wu@xxxxxxxxxxxx
Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 2badd6acfb23d..4ef71afb9525a 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -1267,6 +1267,14 @@ static int mtk_iommu_probe(struct platform_device *pdev)
return PTR_ERR(data->bclk);
}
+ if (MTK_IOMMU_HAS_FLAG(data->plat_data, PGTABLE_PA_35_EN)) {
+ ret = dma_set_mask(dev, DMA_BIT_MASK(35));
+ if (ret) {
+ dev_err(dev, "Failed to set dma_mask 35.\n");
+ return ret;
+ }
+ }
+
pm_runtime_enable(dev);
if (MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_MM)) {
