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remoteproc: virtio: Fix wdg cannot recovery remote processor

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[ Upstream commit b327c72753 ]

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: 1d7b61c06d ("remoteproc: virtio: Create platform device for the remoteproc_virtio")
Signed-off-by: Joakim Zhang <joakim.zhang@cixtech.com>
Acked-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20231217053659.3245745-1-joakim.zhang@cixtech.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Joakim Zhang 2023-12-17 13:36:59 +08:00 committed by Greg Kroah-Hartman
parent 779af170f1
commit 2c26984759
1 changed files with 3 additions and 3 deletions
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6
drivers/remoteproc/remoteproc_virtio.c
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@ -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);
}