[PATCH 5.15 022/124] dmaengine: idxd: fix device cleanup on disable

Greg Kroah-Hartman
2022-04-26T08:59:57Z

From: Dave Jiang <dave.jiang@intel.com>

[ Upstream commit 12e45e89556d7a532120f976081e9e7582addd2b ]

There are certain parts of WQ that needs to be cleaned up even after WQ is
disabled during the device disable. Those are the unchangeable parts for a
WQ when the device is still enabled. Move the cleanup outside of WQ state
check. Remove idxd_wq_disable_cleanup() inside idxd_wq_device_reset_cleanup()
since only the unchangeable parts need to be cleared.

Fixes: 0f225705cf65 ("dmaengine: idxd: fix wq settings post wq disable")
Reported-by: Tony Zhu <tony.zhu@intel.com>
Tested-by: Tony Zhu <tony.zhu@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/164919561905.1455025.13542366389944678346.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/dma/idxd/device.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c
index 7bd9ac1e93b2..a67bafc596b7 100644
--- a/drivers/dma/idxd/device.c
+++ b/drivers/dma/idxd/device.c
@@ -406,7 +406,6 @@ static void idxd_wq_device_reset_cleanup(struct idxd_wq *wq)
{
lockdep_assert_held(&wq->wq_lock);

- idxd_wq_disable_cleanup(wq);
wq->size = 0;
wq->group = NULL;
}
@@ -723,9 +722,9 @@ static void idxd_device_wqs_clear_state(struct idxd_device *idxd)

if (wq->state == IDXD_WQ_ENABLED) {
idxd_wq_disable_cleanup(wq);
- idxd_wq_device_reset_cleanup(wq);
wq->state = IDXD_WQ_DISABLED;
}
+ idxd_wq_device_reset_cleanup(wq);
}
}

--
2.35.1