From: joakim.zhang@cixtech.com
To: andersson@kernel.org, mathieu.poirier@linaro.org,
arnaud.pouliquen@foss.st.com
Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org,
cix-kernel-upstream@cixtech.com,
Joakim Zhang <joakim.zhang@cixtech.com>
Subject: [PATCH V3] remoteproc: virtio: Fix wdg cannot recovery remote processor
Date: Sun, 17 Dec 2023 13:36:59 +0800 [thread overview]
Message-ID: <20231217053659.3245745-1-joakim.zhang@cixtech.com> (raw)
From: Joakim Zhang <joakim.zhang@cixtech.com>
Recovery remote processor failed when wdg irq received:
[ 0.842574] remoteproc remoteproc0: crash detected in cix-dsp-rproc: type watchdog
[ 0.842750] remoteproc remoteproc0: handling crash #1 in cix-dsp-rproc
[ 0.842824] remoteproc remoteproc0: recovering cix-dsp-rproc
[ 0.843342] remoteproc remoteproc0: stopped remote processor cix-dsp-rproc
[ 0.847901] rproc-virtio rproc-virtio.0.auto: Failed to associate buffer
[ 0.847979] remoteproc remoteproc0: failed to probe subdevices for cix-dsp-rproc: -16
The reason is that dma coherent mem would not be released when
recovering the remote processor, due to rproc_virtio_remove()
would not be called, where the mem released. It will fail when
it try to allocate and associate buffer again.
Releasing reserved memory from rproc_virtio_dev_release(), instead of
rproc_virtio_remove().
Fixes: 1d7b61c06dc3 ("remoteproc: virtio: Create platform device for the remoteproc_virtio")
Signed-off-by: Joakim Zhang <joakim.zhang@cixtech.com>
---
ChangeLogs:
V1->V2:
* the same for of_reserved_mem_device_release()
V2->V3:
* release reserved memory in rproc_virtio_dev_release()
---
drivers/remoteproc/remoteproc_virtio.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/remoteproc/remoteproc_virtio.c b/drivers/remoteproc/remoteproc_virtio.c
index 83d76915a6ad..25b66b113b69 100644
--- a/drivers/remoteproc/remoteproc_virtio.c
+++ b/drivers/remoteproc/remoteproc_virtio.c
@@ -351,6 +351,9 @@ static void rproc_virtio_dev_release(struct device *dev)
kfree(vdev);
+ of_reserved_mem_device_release(&rvdev->pdev->dev);
+ dma_release_coherent_memory(&rvdev->pdev->dev);
+
put_device(&rvdev->pdev->dev);
}
@@ -584,9 +587,6 @@ static void rproc_virtio_remove(struct platform_device *pdev)
rproc_remove_subdev(rproc, &rvdev->subdev);
rproc_remove_rvdev(rvdev);
- of_reserved_mem_device_release(&pdev->dev);
- dma_release_coherent_memory(&pdev->dev);
-
put_device(&rproc->dev);
}
--
2.25.1
next reply other threads:[~2023-12-17 5:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-17 5:36 joakim.zhang [this message]
2024-01-09 8:53 ` [PATCH V3] remoteproc: virtio: Fix wdg cannot recovery remote processor Joakim Zhang
2024-01-09 10:57 ` Arnaud POULIQUEN
2024-01-10 18:48 ` Mathieu Poirier
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