On Thu, Aug 14, 2025 at 08:55:31AM -0500, Andrew Davis wrote:
> This helps prevent mistakes like freeing out of order in cleanup functions
> and forgetting to free on error paths.
>
> Signed-off-by: Andrew Davis <a...@ti.com>
> ---
> drivers/remoteproc/da8xx_remoteproc.c | 30 +++++++++++++--------------
> 1 file changed, 14 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/remoteproc/da8xx_remoteproc.c
> b/drivers/remoteproc/da8xx_remoteproc.c
> index 47df21bea5254..58b4f05283d92 100644
> --- a/drivers/remoteproc/da8xx_remoteproc.c
> +++ b/drivers/remoteproc/da8xx_remoteproc.c
> @@ -233,6 +233,13 @@ static int da8xx_rproc_get_internal_memories(struct
> platform_device *pdev,
> return 0;
> }
>
> +static void da8xx_rproc_mem_release(void *data)
> +{
> + struct device *dev = data;
> +
The check for dev->of_node from "free_mem" is missing. I can add it if you
agree.
> + of_reserved_mem_device_release(dev);
> +}
> +
> static int da8xx_rproc_probe(struct platform_device *pdev)
> {
> struct device *dev = &pdev->dev;
> @@ -274,14 +281,13 @@ static int da8xx_rproc_probe(struct platform_device
> *pdev)
> ret = of_reserved_mem_device_init(dev);
> if (ret)
> return dev_err_probe(dev, ret, "device does not have
> specific CMA pool\n");
> + devm_add_action_or_reset(&pdev->dev, da8xx_rproc_mem_release,
> &pdev->dev);
> }
>
> rproc = devm_rproc_alloc(dev, "dsp", &da8xx_rproc_ops, da8xx_fw_name,
> sizeof(*drproc));
> - if (!rproc) {
> - ret = -ENOMEM;
> - goto free_mem;
> - }
> + if (!rproc)
> + return -ENOMEM;
>
> /* error recovery is not supported at present */
> rproc->recovery_disabled = true;
> @@ -294,7 +300,7 @@ static int da8xx_rproc_probe(struct platform_device *pdev)
>
> ret = da8xx_rproc_get_internal_memories(pdev, drproc);
> if (ret)
> - goto free_mem;
> + return ret;
>
> platform_set_drvdata(pdev, rproc);
>
> @@ -304,7 +310,7 @@ static int da8xx_rproc_probe(struct platform_device *pdev)
> rproc);
> if (ret) {
> dev_err(dev, "devm_request_threaded_irq error: %d\n", ret);
> - goto free_mem;
> + return ret;
> }
>
> /*
> @@ -314,7 +320,7 @@ static int da8xx_rproc_probe(struct platform_device *pdev)
> */
> ret = reset_control_assert(dsp_reset);
> if (ret)
> - goto free_mem;
> + return ret;
>
> drproc->chipsig = chipsig;
> drproc->bootreg = bootreg;
> @@ -325,22 +331,16 @@ static int da8xx_rproc_probe(struct platform_device
> *pdev)
> ret = rproc_add(rproc);
> if (ret) {
> dev_err(dev, "rproc_add failed: %d\n", ret);
> - goto free_mem;
> + return ret;
> }
>
> return 0;
> -
> -free_mem:
> - if (dev->of_node)
> - of_reserved_mem_device_release(dev);
> - return ret;
> }
>
> static void da8xx_rproc_remove(struct platform_device *pdev)
> {
> struct rproc *rproc = platform_get_drvdata(pdev);
> struct da8xx_rproc *drproc = rproc->priv;
> - struct device *dev = &pdev->dev;
>
> /*
> * The devm subsystem might end up releasing things before
> @@ -350,8 +350,6 @@ static void da8xx_rproc_remove(struct platform_device
> *pdev)
> disable_irq(drproc->irq);
>
> rproc_del(rproc);
> - if (dev->of_node)
> - of_reserved_mem_device_release(dev);
> }
>
> static const struct of_device_id davinci_rproc_of_match[] __maybe_unused = {
> --
> 2.39.2
>
