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Subject[PATCH v3 3/5] remoteproc: Pass type of shutdown to subdev remove
Date
remoteproc instances can be stopped either by invoking shutdown or by an
attempt to recover from a crash. For some subdev types it's expected to
clean up gracefully during a shutdown, but are unable to do so during a
crash - so pass this information to the subdev remove functions.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---

Changes since v2:
- None

Changes since v1:
- New patch

drivers/remoteproc/qcom_common.c | 6 +++---
drivers/remoteproc/remoteproc_core.c | 18 +++++++++---------
include/linux/remoteproc.h | 4 ++--
3 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/drivers/remoteproc/qcom_common.c b/drivers/remoteproc/qcom_common.c
index d487040b528b..7a862d41503e 100644
--- a/drivers/remoteproc/qcom_common.c
+++ b/drivers/remoteproc/qcom_common.c
@@ -60,7 +60,7 @@ static int glink_subdev_probe(struct rproc_subdev *subdev)
return IS_ERR(glink->edge) ? PTR_ERR(glink->edge) : 0;
}

-static void glink_subdev_remove(struct rproc_subdev *subdev)
+static void glink_subdev_remove(struct rproc_subdev *subdev, bool graceful)
{
struct qcom_rproc_glink *glink = to_glink_subdev(subdev);

@@ -107,7 +107,7 @@ static int smd_subdev_probe(struct rproc_subdev *subdev)
return PTR_ERR_OR_ZERO(smd->edge);
}

-static void smd_subdev_remove(struct rproc_subdev *subdev)
+static void smd_subdev_remove(struct rproc_subdev *subdev, bool graceful)
{
struct qcom_rproc_subdev *smd = to_smd_subdev(subdev);

@@ -176,7 +176,7 @@ static int ssr_notify_start(struct rproc_subdev *subdev)
return 0;
}

-static void ssr_notify_stop(struct rproc_subdev *subdev)
+static void ssr_notify_stop(struct rproc_subdev *subdev, bool graceful)
{
struct qcom_rproc_ssr *ssr = to_ssr_subdev(subdev);

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index eab14b414bf0..3146e965ca47 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -307,7 +307,7 @@ static int rproc_vdev_do_probe(struct rproc_subdev *subdev)
return rproc_add_virtio_dev(rvdev, rvdev->id);
}

-static void rproc_vdev_do_remove(struct rproc_subdev *subdev)
+static void rproc_vdev_do_remove(struct rproc_subdev *subdev, bool graceful)
{
struct rproc_vdev *rvdev = container_of(subdev, struct rproc_vdev, subdev);

@@ -785,17 +785,17 @@ static int rproc_probe_subdevices(struct rproc *rproc)

unroll_registration:
list_for_each_entry_continue_reverse(subdev, &rproc->subdevs, node)
- subdev->remove(subdev);
+ subdev->remove(subdev, false);

return ret;
}

-static void rproc_remove_subdevices(struct rproc *rproc)
+static void rproc_remove_subdevices(struct rproc *rproc, bool graceful)
{
struct rproc_subdev *subdev;

list_for_each_entry_reverse(subdev, &rproc->subdevs, node)
- subdev->remove(subdev);
+ subdev->remove(subdev, graceful);
}

/**
@@ -1013,13 +1013,13 @@ static int rproc_trigger_auto_boot(struct rproc *rproc)
return ret;
}

-static int rproc_stop(struct rproc *rproc)
+static int rproc_stop(struct rproc *rproc, bool graceful)
{
struct device *dev = &rproc->dev;
int ret;

/* remove any subdevices for the remote processor */
- rproc_remove_subdevices(rproc);
+ rproc_remove_subdevices(rproc, graceful);

/* power off the remote processor */
ret = rproc->ops->stop(rproc);
@@ -1063,7 +1063,7 @@ int rproc_trigger_recovery(struct rproc *rproc)
if (ret)
return ret;

- ret = rproc_stop(rproc);
+ ret = rproc_stop(rproc, false);
if (ret)
goto unlock_mutex;

@@ -1216,7 +1216,7 @@ void rproc_shutdown(struct rproc *rproc)
if (!atomic_dec_and_test(&rproc->power))
goto out;

- ret = rproc_stop(rproc);
+ ret = rproc_stop(rproc, true);
if (ret) {
atomic_inc(&rproc->power);
goto out;
@@ -1550,7 +1550,7 @@ EXPORT_SYMBOL(rproc_del);
void rproc_add_subdev(struct rproc *rproc,
struct rproc_subdev *subdev,
int (*probe)(struct rproc_subdev *subdev),
- void (*remove)(struct rproc_subdev *subdev))
+ void (*remove)(struct rproc_subdev *subdev, bool graceful))
{
subdev->probe = probe;
subdev->remove = remove;
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 44e630eb3d94..20a9467744ea 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -456,7 +456,7 @@ struct rproc_subdev {
struct list_head node;

int (*probe)(struct rproc_subdev *subdev);
- void (*remove)(struct rproc_subdev *subdev);
+ void (*remove)(struct rproc_subdev *subdev, bool graceful);
};

/* we currently support only two vrings per rvdev */
@@ -539,7 +539,7 @@ static inline struct rproc *vdev_to_rproc(struct virtio_device *vdev)
void rproc_add_subdev(struct rproc *rproc,
struct rproc_subdev *subdev,
int (*probe)(struct rproc_subdev *subdev),
- void (*remove)(struct rproc_subdev *subdev));
+ void (*remove)(struct rproc_subdev *subdev, bool graceful));

void rproc_remove_subdev(struct rproc *rproc, struct rproc_subdev *subdev);

--
2.15.0
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