linux-kernel - [PATCH v2 2/5] remoteproc: k3-dsp: Use devm

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Date: Mon, 5 Feb 2024 12:27:50 -0600
From: Andrew Davis <afd@...com>
To: Jai Luthra <j-luthra@...com>, Hari Nagalla <hnagalla@...com>,
        Bjorn
 Andersson <andersson@...nel.org>,
        Mathieu Poirier
	<mathieu.poirier@...aro.org>
CC: <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Andrew
 Davis <afd@...com>
Subject: [PATCH v2 2/5] remoteproc: k3-dsp: Use devm_kzalloc() helper

Use device lifecycle managed devm_kzalloc() helper function. This helps
prevent mistakes like freeing out of order in cleanup functions and
forgetting to free on all error paths.

Signed-off-by: Andrew Davis <afd@...com>
---
 drivers/remoteproc/ti_k3_dsp_remoteproc.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/remoteproc/ti_k3_dsp_remoteproc.c b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
index 64ec5759c4ec1..b9332c66a52ab 100644
--- a/drivers/remoteproc/ti_k3_dsp_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
@@ -659,7 +659,7 @@ struct ti_sci_proc *k3_dsp_rproc_of_get_tsp(struct device *dev,
 	if (ret < 0)
 		return ERR_PTR(ret);
 
-	tsp = kzalloc(sizeof(*tsp), GFP_KERNEL);
+	tsp = devm_kzalloc(dev, sizeof(*tsp), GFP_KERNEL);
 	if (!tsp)
 		return ERR_PTR(-ENOMEM);
 
@@ -730,7 +730,7 @@ static int k3_dsp_rproc_probe(struct platform_device *pdev)
 	ret = ti_sci_proc_request(kproc->tsp);
 	if (ret < 0) {
 		dev_err_probe(dev, ret, "ti_sci_proc_request failed\n");
-		goto free_tsp;
+		return ret;
 	}
 
 	ret = k3_dsp_rproc_of_get_memories(pdev, kproc);
@@ -797,8 +797,6 @@ static int k3_dsp_rproc_probe(struct platform_device *pdev)
 	ret1 = ti_sci_proc_release(kproc->tsp);
 	if (ret1)
 		dev_err(dev, "failed to release proc (%pe)\n", ERR_PTR(ret1));
-free_tsp:
-	kfree(kproc->tsp);
 	return ret;
 }
 
@@ -824,8 +822,6 @@ static void k3_dsp_rproc_remove(struct platform_device *pdev)
 	if (ret)
 		dev_err(dev, "failed to release proc (%pe)\n", ERR_PTR(ret));
 
-	kfree(kproc->tsp);
-
 	k3_dsp_reserved_mem_exit(kproc);
 }
 
-- 
2.39.2