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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>
b327c72753