linux-kernel - [PATCH v5 08/11] remoteproc: stm32: Split function stm32_rproc_parse

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue,  7 Jul 2020 15:31:09 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     ohad@...ery.com, bjorn.andersson@...aro.org, loic.pallardy@...com,
        arnaud.pouliquen@...com, mcoquelin.stm32@...il.com,
        alexandre.torgue@...com
Cc:     linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com
Subject: [PATCH v5 08/11] remoteproc: stm32: Split function stm32_rproc_parse_fw()

Split function stm32_rproc_parse_fw() in two parts, the first one
to parse the memory regions and the second one to load the
resource table.  That way parsing of the memory regions can be
re-used when attaching to the remote processor.

Mainly based on the work published by Arnaud Pouliquen [1].

[1]. https://patchwork.kernel.org/project/linux-remoteproc/list/?series=239877

Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
---
 drivers/remoteproc/stm32_rproc.c | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c
index cbeb5ceb15c5..9ab58fae252f 100644
--- a/drivers/remoteproc/stm32_rproc.c
+++ b/drivers/remoteproc/stm32_rproc.c
@@ -213,7 +213,7 @@ static int stm32_rproc_elf_load_rsc_table(struct rproc *rproc,
 	return 0;
 }
 
-static int stm32_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
+static int stm32_rproc_parse_memory_regions(struct rproc *rproc)
 {
 	struct device *dev = rproc->dev.parent;
 	struct device_node *np = dev->of_node;
@@ -266,6 +266,16 @@ static int stm32_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
 		index++;
 	}
 
+	return 0;
+}
+
+static int stm32_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
+{
+	int ret = stm32_rproc_parse_memory_regions(rproc);
+
+	if (ret)
+		return ret;
+
 	return stm32_rproc_elf_load_rsc_table(rproc, fw);
 }
 
@@ -693,15 +703,20 @@ static int stm32_rproc_probe(struct platform_device *pdev)
 	if (ret)
 		goto free_rproc;
 
-	if (state == M4_STATE_CRUN)
+	if (state == M4_STATE_CRUN) {
 		rproc->state = RPROC_DETACHED;
 
+		ret = stm32_rproc_parse_memory_regions(rproc);
+		if (ret)
+			goto free_resources;
+	}
+
 	rproc->has_iommu = false;
 	ddata->workqueue = create_workqueue(dev_name(dev));
 	if (!ddata->workqueue) {
 		dev_err(dev, "cannot create workqueue\n");
 		ret = -ENOMEM;
-		goto free_rproc;
+		goto free_resources;
 	}
 
 	platform_set_drvdata(pdev, rproc);
@@ -720,6 +735,8 @@ static int stm32_rproc_probe(struct platform_device *pdev)
 	stm32_rproc_free_mbox(rproc);
 free_wkq:
 	destroy_workqueue(ddata->workqueue);
+free_resources:
+	rproc_resource_cleanup(rproc);
 free_rproc:
 	if (device_may_wakeup(dev)) {
 		dev_pm_clear_wake_irq(dev);
-- 
2.25.1