| Message ID | 20240816-cleanup-h-of-node-put-memory-v2-1-9eed0ee16b78@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | memory: simplify with scoped/cleanup.h for device nodes | expand |
On Fri, 16 Aug 2024 12:54:25 +0200 Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> wrote: > 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> I'm not entirely keen on the increased scope for which the reference is held but doesn't really matter. Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> >
On 16/08/2024 at 12:54, Krzysztof Kozlowski wrote: > 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> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> Best regards, Nicolas > > --- > > Changes in v2: > 1. Wrap line before of_parse_phandle() > --- > drivers/memory/atmel-ebi.c | 29 ++++++++++------------------- > 1 file changed, 10 insertions(+), 19 deletions(-) > > diff --git a/drivers/memory/atmel-ebi.c b/drivers/memory/atmel-ebi.c > index e8bb5f37f5cb..8f5b3302ee30 100644 > --- a/drivers/memory/atmel-ebi.c > +++ b/drivers/memory/atmel-ebi.c > @@ -6,6 +6,7 @@ > * Copyright (C) 2013 Jean-Jacques Hiblot <jjhiblot@traphandler.com> > */ > > +#include <linux/cleanup.h> > #include <linux/clk.h> > #include <linux/io.h> > #include <linux/mfd/syscon.h> > @@ -517,7 +518,7 @@ static int atmel_ebi_dev_disable(struct atmel_ebi *ebi, struct device_node *np) > static int atmel_ebi_probe(struct platform_device *pdev) > { > struct device *dev = &pdev->dev; > - struct device_node *child, *np = dev->of_node, *smc_np; > + struct device_node *child, *np = dev->of_node; > struct atmel_ebi *ebi; > int ret, reg_cells; > struct clk *clk; > @@ -541,30 +542,24 @@ static int atmel_ebi_probe(struct platform_device *pdev) > > ebi->clk = clk; > > - smc_np = of_parse_phandle(dev->of_node, "atmel,smc", 0); > + struct device_node *smc_np __free(device_node) = > + of_parse_phandle(dev->of_node, "atmel,smc", 0); > > ebi->smc.regmap = syscon_node_to_regmap(smc_np); > - if (IS_ERR(ebi->smc.regmap)) { > - ret = PTR_ERR(ebi->smc.regmap); > - goto put_node; > - } > + if (IS_ERR(ebi->smc.regmap)) > + return PTR_ERR(ebi->smc.regmap); > > ebi->smc.layout = atmel_hsmc_get_reg_layout(smc_np); > - if (IS_ERR(ebi->smc.layout)) { > - ret = PTR_ERR(ebi->smc.layout); > - goto put_node; > - } > + if (IS_ERR(ebi->smc.layout)) > + return PTR_ERR(ebi->smc.layout); > > ebi->smc.clk = of_clk_get(smc_np, 0); > if (IS_ERR(ebi->smc.clk)) { > - if (PTR_ERR(ebi->smc.clk) != -ENOENT) { > - ret = PTR_ERR(ebi->smc.clk); > - goto put_node; > - } > + if (PTR_ERR(ebi->smc.clk) != -ENOENT) > + return PTR_ERR(ebi->smc.clk); > > ebi->smc.clk = NULL; > } > - of_node_put(smc_np); > ret = clk_prepare_enable(ebi->smc.clk); > if (ret) > return ret; > @@ -615,10 +610,6 @@ static int atmel_ebi_probe(struct platform_device *pdev) > } > > return of_platform_populate(np, NULL, NULL, dev); > - > -put_node: > - of_node_put(smc_np); > - return ret; > } > > static __maybe_unused int atmel_ebi_resume(struct device *dev) > > -- > 2.43.0 >
diff --git a/drivers/memory/atmel-ebi.c b/drivers/memory/atmel-ebi.c index e8bb5f37f5cb..8f5b3302ee30 100644 --- a/drivers/memory/atmel-ebi.c +++ b/drivers/memory/atmel-ebi.c @@ -6,6 +6,7 @@ * Copyright (C) 2013 Jean-Jacques Hiblot <jjhiblot@traphandler.com> */ +#include <linux/cleanup.h> #include <linux/clk.h> #include <linux/io.h> #include <linux/mfd/syscon.h> @@ -517,7 +518,7 @@ static int atmel_ebi_dev_disable(struct atmel_ebi *ebi, struct device_node *np) static int atmel_ebi_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct device_node *child, *np = dev->of_node, *smc_np; + struct device_node *child, *np = dev->of_node; struct atmel_ebi *ebi; int ret, reg_cells; struct clk *clk; @@ -541,30 +542,24 @@ static int atmel_ebi_probe(struct platform_device *pdev) ebi->clk = clk; - smc_np = of_parse_phandle(dev->of_node, "atmel,smc", 0); + struct device_node *smc_np __free(device_node) = + of_parse_phandle(dev->of_node, "atmel,smc", 0); ebi->smc.regmap = syscon_node_to_regmap(smc_np); - if (IS_ERR(ebi->smc.regmap)) { - ret = PTR_ERR(ebi->smc.regmap); - goto put_node; - } + if (IS_ERR(ebi->smc.regmap)) + return PTR_ERR(ebi->smc.regmap); ebi->smc.layout = atmel_hsmc_get_reg_layout(smc_np); - if (IS_ERR(ebi->smc.layout)) { - ret = PTR_ERR(ebi->smc.layout); - goto put_node; - } + if (IS_ERR(ebi->smc.layout)) + return PTR_ERR(ebi->smc.layout); ebi->smc.clk = of_clk_get(smc_np, 0); if (IS_ERR(ebi->smc.clk)) { - if (PTR_ERR(ebi->smc.clk) != -ENOENT) { - ret = PTR_ERR(ebi->smc.clk); - goto put_node; - } + if (PTR_ERR(ebi->smc.clk) != -ENOENT) + return PTR_ERR(ebi->smc.clk); ebi->smc.clk = NULL; } - of_node_put(smc_np); ret = clk_prepare_enable(ebi->smc.clk); if (ret) return ret; @@ -615,10 +610,6 @@ static int atmel_ebi_probe(struct platform_device *pdev) } return of_platform_populate(np, NULL, NULL, dev); - -put_node: - of_node_put(smc_np); - return ret; } static __maybe_unused int atmel_ebi_resume(struct device *dev)
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> --- Changes in v2: 1. Wrap line before of_parse_phandle() --- drivers/memory/atmel-ebi.c | 29 ++++++++++------------------- 1 file changed, 10 insertions(+), 19 deletions(-)