Messages in this thread Patch in this message |  | | From | Mathieu Poirier <> | Subject | [PATCH v5 7/9] remoteproc: Refactor function rproc_trigger_auto_boot() | Date | Tue, 7 Jul 2020 15:00:12 -0600 |
| |
Refactor function rproc_trigger_auto_boot() to properly deal with scenarios where the remoteproc core needs to attach with a remote processor that has already been booted by an external entity.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> --- drivers/remoteproc/remoteproc_core.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index caea920ce4b8..08de81828e4e 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -1568,6 +1568,15 @@ static int rproc_trigger_auto_boot(struct rproc *rproc) { int ret; + /* + * Since the remote processor is in a detached state, it has already + * been booted by another entity. As such there is no point in waiting + * for a firmware image to be loaded, we can simply initiate the process + * of attaching to it immediately. + */ + if (rproc->state == RPROC_DETACHED) + return rproc_boot(rproc); + /* * We're initiating an asynchronous firmware loading, so we can * be built-in kernel code, without hanging the boot process. -- 2.25.1
|  |