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Message-ID: <20240827114607.4019972-8-ruanjinjie@huawei.com>
Date: Tue, 27 Aug 2024 19:46:06 +0800
From: Jinjie Ruan <ruanjinjie@...wei.com>
To: <andrew@...n.ch>, <sebastian.hesselbarth@...il.com>,
<gregory.clement@...tlin.com>, <herve.codina@...tlin.com>,
<qiang.zhao@....com>, <christophe.leroy@...roup.eu>,
<thierry.reding@...il.com>, <jonathanh@...dia.com>, <nm@...com>,
<ssantosh@...nel.org>, <petlozup@...dia.com>, <pshete@...dia.com>,
<ruanjinjie@...wei.com>, <christophe.jaillet@...adoo.fr>,
<ulf.hansson@...aro.org>, <linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <linuxppc-dev@...ts.ozlabs.org>,
<linux-tegra@...r.kernel.org>, <krzk@...nel.org>, <jic23@...nel.org>
Subject: [PATCH -next 7/8] soc: ti: knav_dma: Simplify with scoped for each OF child loop
Use scoped for_each_child_of_node_scoped() when iterating over device
nodes to make code a bit simpler.
And use the dev_err_probe() helper to simplify error handling during
probe. This also handle scenario, when EDEFER is returned and useless
error is printed.
Signed-off-by: Jinjie Ruan <ruanjinjie@...wei.com>
---
drivers/soc/ti/knav_dma.c | 16 +++++-----------
1 file changed, 5 insertions(+), 11 deletions(-)
diff --git a/drivers/soc/ti/knav_dma.c b/drivers/soc/ti/knav_dma.c
index fb0746d8caad..eeec422a46f0 100644
--- a/drivers/soc/ti/knav_dma.c
+++ b/drivers/soc/ti/knav_dma.c
@@ -706,20 +706,15 @@ static int knav_dma_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *node = pdev->dev.of_node;
- struct device_node *child;
int ret = 0;
- if (!node) {
- dev_err(&pdev->dev, "could not find device info\n");
- return -EINVAL;
- }
+ if (!node)
+ return dev_err_probe(&pdev->dev, -EINVAL, "could not find device info\n");
kdev = devm_kzalloc(dev,
sizeof(struct knav_dma_pool_device), GFP_KERNEL);
- if (!kdev) {
- dev_err(dev, "could not allocate driver mem\n");
- return -ENOMEM;
- }
+ if (!kdev)
+ return dev_err_probe(dev, -ENOMEM, "could not allocate driver mem\n");
kdev->dev = dev;
INIT_LIST_HEAD(&kdev->list);
@@ -732,10 +727,9 @@ static int knav_dma_probe(struct platform_device *pdev)
}
/* Initialise all packet dmas */
- for_each_child_of_node(node, child) {
+ for_each_child_of_node_scoped(node, child) {
ret = dma_init(node, child);
if (ret) {
- of_node_put(child);
dev_err(&pdev->dev, "init failed with %d\n", ret);
break;
}
--
2.34.1
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