Avoids the need for manual cleanup of_node_put() in early exits from the loop. Signed-off-by: Jinjie Ruan <ruanjinjie@xxxxxxxxxx> --- .../st/sti/c8sectpfe/c8sectpfe-core.c | 34 +++++++------------ 1 file changed, 12 insertions(+), 22 deletions(-) diff --git a/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c b/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c index 67d3d6e50d2e..40ae91f65848 100644 --- a/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c +++ b/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c @@ -658,7 +658,7 @@ static irqreturn_t c8sectpfe_error_irq_handler(int irq, void *priv) static int c8sectpfe_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct device_node *child, *np = dev->of_node; + struct device_node *np = dev->of_node; struct c8sectpfei *fei; struct resource *res; int ret, index = 0; @@ -742,17 +742,15 @@ static int c8sectpfe_probe(struct platform_device *pdev) return PTR_ERR(fei->pinctrl); } - for_each_child_of_node(np, child) { + for_each_child_of_node_scoped(np, child) { struct device_node *i2c_bus; fei->channel_data[index] = devm_kzalloc(dev, sizeof(struct channel_info), GFP_KERNEL); - if (!fei->channel_data[index]) { - ret = -ENOMEM; - goto err_node_put; - } + if (!fei->channel_data[index]) + return -ENOMEM; tsin = fei->channel_data[index]; @@ -761,7 +759,7 @@ static int c8sectpfe_probe(struct platform_device *pdev) ret = of_property_read_u32(child, "tsin-num", &tsin->tsin_id); if (ret) { dev_err(&pdev->dev, "No tsin_num found\n"); - goto err_node_put; + return ret; } /* sanity check value */ @@ -769,8 +767,7 @@ static int c8sectpfe_probe(struct platform_device *pdev) dev_err(&pdev->dev, "tsin-num %d specified greater than number\n\tof input block hw in SoC! (%d)", tsin->tsin_id, fei->hw_stats.num_ib); - ret = -EINVAL; - goto err_node_put; + return -EINVAL; } tsin->invert_ts_clk = of_property_read_bool(child, @@ -786,22 +783,20 @@ static int c8sectpfe_probe(struct platform_device *pdev) &tsin->dvb_card); if (ret) { dev_err(&pdev->dev, "No dvb-card found\n"); - goto err_node_put; + return ret; } i2c_bus = of_parse_phandle(child, "i2c-bus", 0); if (!i2c_bus) { dev_err(&pdev->dev, "No i2c-bus found\n"); - ret = -ENODEV; - goto err_node_put; + return -ENODEV; } tsin->i2c_adapter = of_find_i2c_adapter_by_node(i2c_bus); if (!tsin->i2c_adapter) { dev_err(&pdev->dev, "No i2c adapter found\n"); of_node_put(i2c_bus); - ret = -ENODEV; - goto err_node_put; + return -ENODEV; } of_node_put(i2c_bus); @@ -814,7 +809,7 @@ static int c8sectpfe_probe(struct platform_device *pdev) if (ret && ret != -EBUSY) { dev_err(dev, "Can't request tsin%d reset gpio\n", fei->channel_data[index]->tsin_id); - goto err_node_put; + return ret; } if (!ret) { @@ -856,10 +851,6 @@ static int c8sectpfe_probe(struct platform_device *pdev) c8sectpfe_debugfs_init(fei); return 0; - -err_node_put: - of_node_put(child); - return ret; } static void c8sectpfe_remove(struct platform_device *pdev) @@ -898,16 +889,15 @@ static void c8sectpfe_remove(struct platform_device *pdev) static int configure_channels(struct c8sectpfei *fei) { int index = 0, ret; - struct device_node *child, *np = fei->dev->of_node; + struct device_node *np = fei->dev->of_node; /* iterate round each tsin and configure memdma descriptor and IB hw */ - for_each_child_of_node(np, child) { + for_each_child_of_node_scoped(np, child) { ret = configure_memdma_and_inputblock(fei, fei->channel_data[index]); if (ret) { dev_err(fei->dev, "configure_memdma_and_inputblock failed\n"); - of_node_put(child); goto err_unmap; } index++; -- 2.34.1