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firmware: tegra: bpmp: Use scoped device node handling to simplify error paths

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Obtain the device node reference with scoped/cleanup.h to reduce error
handling and make the code a bit simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Krzysztof Kozlowski 2024-08-16 15:57:22 +02:00 committed by Thierry Reding
parent 9c3a62c20f
commit 8812b8689e
1 changed files with 5 additions and 9 deletions
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14
drivers/firmware/tegra/bpmp.c
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@ -3,6 +3,7 @@
* Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
*/
#include <linux/cleanup.h>
#include <linux/clk/tegra.h>
#include <linux/genalloc.h>
#include <linux/mailbox_client.h>
@ -34,29 +35,24 @@ channel_to_ops(struct tegra_bpmp_channel *channel)
struct tegra_bpmp *tegra_bpmp_get(struct device *dev)
{
struct device_node *np __free(device_node);
struct platform_device *pdev;
struct tegra_bpmp *bpmp;
struct device_node *np;
np = of_parse_phandle(dev->of_node, "nvidia,bpmp", 0);
if (!np)
return ERR_PTR(-ENOENT);
pdev = of_find_device_by_node(np);
if (!pdev) {
bpmp = ERR_PTR(-ENODEV);
goto put;
}
if (!pdev)
return ERR_PTR(-ENODEV);
bpmp = platform_get_drvdata(pdev);
if (!bpmp) {
bpmp = ERR_PTR(-EPROBE_DEFER);
put_device(&pdev->dev);
goto put;
return ERR_PTR(-EPROBE_DEFER);
}
put:
of_node_put(np);
return bpmp;
}
EXPORT_SYMBOL_GPL(tegra_bpmp_get);