diff mbox series

[v2,4/4] iommu/mediatek: Reduce the tlb flush timeout value

Message ID 1570627143-29441-4-git-send-email-yong.wu@mediatek.com (mailing list archive)
State New, archived
Headers show
Series [v2,1/4] iommu/mediatek: Correct the flush_iotlb_all callback | expand

Commit Message

Yong Wu (吴勇) Oct. 9, 2019, 1:19 p.m. UTC 
Reduce the tlb timeout value from 100000us to 1000us. the original value
is so long that affect the multimedia performance. This is only a minor
improvement rather than fixing a issue.

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
 drivers/iommu/mtk_iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 607f92c..1e9ff25 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -195,7 +195,7 @@  static void mtk_iommu_tlb_add_flush(unsigned long iova, size_t size,
 		 * follows tlb_flush to avoid break the sequence.
 		 */
 		ret = readl_poll_timeout_atomic(data->base + REG_MMU_CPE_DONE,
-						tmp, tmp != 0, 10, 100000);
+						tmp, tmp != 0, 10, 1000);
 		if (ret) {
 			dev_warn(data->dev,
 				 "Partial TLB flush timed out, falling back to full flush\n");