Fixes for 6.6

[thirdparty/kernel/stable-queue.git] / queue-6.6 / dmaengine-revert-dmaengine-pl330-issue_pending-waits.patch

diff --git a/queue-6.6/dmaengine-revert-dmaengine-pl330-issue_pending-waits.patch b/queue-6.6/dmaengine-revert-dmaengine-pl330-issue_pending-waits.patch
new file mode 100644 (file)
index 0000000..1b72ba8
--- /dev/null
+++ b/queue-6.6/dmaengine-revert-dmaengine-pl330-issue_pending-waits.patch
@@ -0,0 +1,39 @@
+From 5325af9194b3af90ef6267063dbd209feeb9414e Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Thu, 28 Mar 2024 12:21:51 +0530
+Subject: dmaengine: Revert "dmaengine: pl330: issue_pending waits until WFP
+ state"
+
+From: Vinod Koul <vkoul@kernel.org>
+
+[ Upstream commit afc89870ea677bd5a44516eb981f7a259b74280c ]
+
+This reverts commit 22a9d9585812 ("dmaengine: pl330: issue_pending waits
+until WFP state") as it seems to cause regression in pl330 driver.
+Note the issue now exists in mainline so a fix to be done.
+
+Cc: stable@vger.kernel.org
+Reported-by: karthikeyan <karthikeyan@linumiz.com>
+Signed-off-by: Vinod Koul <vkoul@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/dma/pl330.c | 3 ---
+ 1 file changed, 3 deletions(-)
+
+diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
+index c29744bfdf2c2..3cf0b38387ae5 100644
+--- a/drivers/dma/pl330.c
++++ b/drivers/dma/pl330.c
+@@ -1053,9 +1053,6 @@ static bool _trigger(struct pl330_thread *thrd)
+ 
+       thrd->req_running = idx;
+ 
+-      if (desc->rqtype == DMA_MEM_TO_DEV || desc->rqtype == DMA_DEV_TO_MEM)
+-              UNTIL(thrd, PL330_STATE_WFP);
+-
+       return true;
+ }
+ 
+-- 
+2.43.0
+