linux-kernel - [PATCH 6/9] dmaengine: idxd: Fix not releasing workqueue on .release()

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Message-Id: <20250804-idxd-fix-flr-on-kernel-queues-v3-v1-6-4e020fbf52c1@intel.com>
Date: Mon, 04 Aug 2025 18:27:57 -0700
From: Vinicius Costa Gomes <vinicius.gomes@...el.com>
To: Dave Jiang <dave.jiang@...el.com>, Vinod Koul <vkoul@...nel.org>, 
 Fenghua Yu <fenghua.yu@...el.com>, Dan Williams <dan.j.williams@...el.com>
Cc: dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Vinicius Costa Gomes <vinicius.gomes@...el.com>
Subject: [PATCH 6/9] dmaengine: idxd: Fix not releasing workqueue on
 .release()

The workqueue associated with an DSA/IAA device is not released when
the object is freed.

Fixes: 47c16ac27d4c ("dmaengine: idxd: fix idxd conf_dev 'struct device' lifetime")
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@...el.com>
---
 drivers/dma/idxd/sysfs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index 9f0701021af0e6fbe3c3c04a0e336ee9cd094641..cdd7a59140d90c80f5837473962017114cd00b13 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -1812,6 +1812,7 @@ static void idxd_conf_device_release(struct device *dev)
 {
 	struct idxd_device *idxd = confdev_to_idxd(dev);
 
+	destroy_workqueue(idxd->wq);
 	kfree(idxd->groups);
 	bitmap_free(idxd->wq_enable_map);
 	kfree(idxd->wqs);

-- 
2.50.1