Re: [PATCH v2 7/7] remoteproc: Get rid of tedious error path

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On 4/15/20 3:48 PM, Mathieu Poirier wrote:
Get rid of tedious error management by moving firmware and operation
allocation after calling device_initialize().  That way we take advantage
of the automatic call to rproc_type_release() to cleanup after ourselves
when put_device() is called.

Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Reviewed-by: Alex Elder <elder@xxxxxxxxxx>

Acked-by: Suman Anna <s-anna@xxxxxx>

regards
Suman

---
  drivers/remoteproc/remoteproc_core.c | 22 +++++++++-------------
  1 file changed, 9 insertions(+), 13 deletions(-)

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index a5a0ceb86b3f..405c94f151a7 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -2056,12 +2056,6 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
  	if (!rproc)
  		return NULL;
- if (rproc_alloc_firmware(rproc, name, firmware))
-		goto free_rproc;
-
-	if (rproc_alloc_ops(rproc, ops))
-		goto free_firmware;
-
  	rproc->name = name;
  	rproc->priv = &rproc[1];
  	rproc->auto_boot = true;
@@ -2074,12 +2068,17 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
  	rproc->dev.driver_data = rproc;
  	idr_init(&rproc->notifyids);
+ if (rproc_alloc_firmware(rproc, name, firmware))
+		goto put_device;
+
+	if (rproc_alloc_ops(rproc, ops))
+		goto put_device;
+
  	/* Assign a unique device index and name */
  	rproc->index = ida_simple_get(&rproc_dev_index, 0, 0, GFP_KERNEL);
  	if (rproc->index < 0) {
  		dev_err(dev, "ida_simple_get failed: %d\n", rproc->index);
-		put_device(&rproc->dev);
-		return NULL;
+		goto put_device;
  	}
dev_set_name(&rproc->dev, "remoteproc%d", rproc->index);
@@ -2100,11 +2099,8 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
  	rproc->state = RPROC_OFFLINE;
return rproc;
-
-free_firmware:
-	kfree(rproc->firmware);
-free_rproc:
-	kfree(rproc);
+put_device:
+	put_device(&rproc->dev);
  	return NULL;
  }
  EXPORT_SYMBOL(rproc_alloc);





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