diff mbox series

[v4,7/7] iommu/mediatek: Reduce the tlb flush timeout value

Message ID 1571196792-12382-8-git-send-email-yong.wu@mediatek.com (mailing list archive)
State Mainlined
Commit c90ae4a63541e05f77815762ddb0f7aee917b083
Headers show
Series Improve tlb range flush | expand

Commit Message

Yong Wu (吴勇) Oct. 16, 2019, 3:33 a.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 c2b7ed5..8ca2e99 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -192,7 +192,7 @@  static void mtk_iommu_tlb_flush_range_sync(unsigned long iova, size_t size,
 
 		/* tlb sync */
 		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");