1 files changed, 43 insertions, 0 deletions
diff --git a/package/kernel/qca-nss-dp/patches/0011-01-edma_v1-rework-hw_reset-logic-to-permit-rmmod-and-in.patch b/package/kernel/qca-nss-dp/patches/0011-01-edma_v1-rework-hw_reset-logic-to-permit-rmmod-and-in.patch
new file mode 100644
index 0000000000..7e2a593657
--- /dev/null
+++ b/package/kernel/qca-nss-dp/patches/0011-01-edma_v1-rework-hw_reset-logic-to-permit-rmmod-and-in.patch
@@ -0,0 +1,43 @@
+From c318c90b824c59539bf2e33618e381293398616c Mon Sep 17 00:00:00 2001
+From: Christian Marangi <ansuelsmth@gmail.com>
+Date: Tue, 16 Apr 2024 15:02:49 +0200
+Subject: [PATCH 1/6] edma_v1: rework hw_reset logic to permit rmmod and insmod
+
+Rework hw_reset logic for edma v1 to permit rmmod and insmod by using
+get_exclusive_released variant (assuming the reset control was released)
+and manually acquire and release it.
+
+This permits rmmod and insmod without triggering warning or receiving
+-EBUSY errors.
+
+Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
+---
+ hal/dp_ops/edma_dp/edma_v1/edma_cfg.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+--- a/hal/dp_ops/edma_dp/edma_v1/edma_cfg.c
++++ b/hal/dp_ops/edma_dp/edma_v1/edma_cfg.c
+@@ -719,18 +719,22 @@ int edma_hw_reset(struct edma_hw *ehw)
+ 	struct reset_control *rst;
+ 	struct platform_device *pdev = ehw->pdev;
+ 
+-	rst = devm_reset_control_get(&pdev->dev, EDMA_HW_RESET_ID);
++	rst = devm_reset_control_get_exclusive_released(&pdev->dev, EDMA_HW_RESET_ID);
+ 	if (IS_ERR(rst)) {
+ 		pr_warn("DTS Node: %s does not exist\n", EDMA_HW_RESET_ID);
+ 		return -EINVAL;
+ 	}
+ 
++	reset_control_acquire(rst);
++
+ 	reset_control_assert(rst);
+ 	udelay(100);
+ 
+ 	reset_control_deassert(rst);
+ 	udelay(100);
+ 
++	reset_control_release(rst);
++
+ 	pr_info("EDMA HW Reset completed succesfully\n");
+ 
+ 	return 0;