* [PATCH] pinctrl: nuvoton: Add missing fwnode_handle_put in wpcm450_gpio_register
@ 2022-04-21 5:53 ` Peng Wu
0 siblings, 0 replies; 4+ messages in thread
From: Peng Wu @ 2022-04-21 5:53 UTC (permalink / raw)
To: j.neuschaefer, linus.walleij
Cc: openbmc, linux-gpio, linux-kernel, wupeng58, liwei391
In one of the error paths of the device_for_each_child_node() loop
in wpcm450_gpio_register, add missing call to fwnode_handle_put.
Signed-off-by: Peng Wu <wupeng58@huawei.com>
---
drivers/pinctrl/nuvoton/pinctrl-wpcm450.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)
diff --git a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
index 0dbeb91f0bf2..de4388b512d7 100644
--- a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
+++ b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
@@ -1038,15 +1038,19 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
continue;
ret = fwnode_property_read_u32(child, "reg", ®);
- if (ret < 0)
+ if (ret < 0) {
+ fwnode_handle_put(child);
return ret;
+ }
gpio = &pctrl->gpio_bank[reg];
gpio->pctrl = pctrl;
- if (reg >= WPCM450_NUM_BANKS)
+ if (reg >= WPCM450_NUM_BANKS) {
+ fwnode_handle_put(child);
return dev_err_probe(dev, -EINVAL,
- "GPIO index %d out of range!\n", reg);
+ "GPIO index %d out of range!\n", reg);
+ }
bank = &wpcm450_banks[reg];
gpio->bank = bank;
@@ -1060,8 +1064,10 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
}
ret = bgpio_init(&gpio->gc, dev, 4,
dat, set, NULL, dirout, NULL, flags);
- if (ret < 0)
+ if (ret < 0) {
+ fwnode_handle_put(child);
return dev_err_probe(dev, ret, "GPIO initialization failed\n");
+ }
gpio->gc.ngpio = bank->length;
gpio->gc.set_config = wpcm450_gpio_set_config;
@@ -1074,8 +1080,11 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
girq->parent_handler = wpcm450_gpio_irqhandler;
girq->parents = devm_kcalloc(dev, WPCM450_NUM_GPIO_IRQS,
sizeof(*girq->parents), GFP_KERNEL);
- if (!girq->parents)
+ if (!girq->parents) {
+ fwnode_handle_put(child);
return -ENOMEM;
+ }
+
girq->default_type = IRQ_TYPE_NONE;
girq->handler = handle_bad_irq;
@@ -1091,8 +1100,10 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
}
ret = devm_gpiochip_add_data(dev, &gpio->gc, gpio);
- if (ret)
+ if (ret) {
+ fwnode_handle_put(child);
return dev_err_probe(dev, ret, "Failed to add GPIO chip\n");
+ }
}
return 0;
--
2.17.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH] pinctrl: nuvoton: Add missing fwnode_handle_put in wpcm450_gpio_register
@ 2022-04-21 5:53 ` Peng Wu
0 siblings, 0 replies; 4+ messages in thread
From: Peng Wu @ 2022-04-21 5:53 UTC (permalink / raw)
To: j.neuschaefer, linus.walleij
Cc: wupeng58, linux-gpio, openbmc, liwei391, linux-kernel
In one of the error paths of the device_for_each_child_node() loop
in wpcm450_gpio_register, add missing call to fwnode_handle_put.
Signed-off-by: Peng Wu <wupeng58@huawei.com>
---
drivers/pinctrl/nuvoton/pinctrl-wpcm450.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)
diff --git a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
index 0dbeb91f0bf2..de4388b512d7 100644
--- a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
+++ b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
@@ -1038,15 +1038,19 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
continue;
ret = fwnode_property_read_u32(child, "reg", ®);
- if (ret < 0)
+ if (ret < 0) {
+ fwnode_handle_put(child);
return ret;
+ }
gpio = &pctrl->gpio_bank[reg];
gpio->pctrl = pctrl;
- if (reg >= WPCM450_NUM_BANKS)
+ if (reg >= WPCM450_NUM_BANKS) {
+ fwnode_handle_put(child);
return dev_err_probe(dev, -EINVAL,
- "GPIO index %d out of range!\n", reg);
+ "GPIO index %d out of range!\n", reg);
+ }
bank = &wpcm450_banks[reg];
gpio->bank = bank;
@@ -1060,8 +1064,10 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
}
ret = bgpio_init(&gpio->gc, dev, 4,
dat, set, NULL, dirout, NULL, flags);
- if (ret < 0)
+ if (ret < 0) {
+ fwnode_handle_put(child);
return dev_err_probe(dev, ret, "GPIO initialization failed\n");
+ }
gpio->gc.ngpio = bank->length;
gpio->gc.set_config = wpcm450_gpio_set_config;
@@ -1074,8 +1080,11 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
girq->parent_handler = wpcm450_gpio_irqhandler;
girq->parents = devm_kcalloc(dev, WPCM450_NUM_GPIO_IRQS,
sizeof(*girq->parents), GFP_KERNEL);
- if (!girq->parents)
+ if (!girq->parents) {
+ fwnode_handle_put(child);
return -ENOMEM;
+ }
+
girq->default_type = IRQ_TYPE_NONE;
girq->handler = handle_bad_irq;
@@ -1091,8 +1100,10 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
}
ret = devm_gpiochip_add_data(dev, &gpio->gc, gpio);
- if (ret)
+ if (ret) {
+ fwnode_handle_put(child);
return dev_err_probe(dev, ret, "Failed to add GPIO chip\n");
+ }
}
return 0;
--
2.17.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] pinctrl: nuvoton: Add missing fwnode_handle_put in wpcm450_gpio_register
2022-04-21 5:53 ` Peng Wu
@ 2022-04-21 7:32 ` Jonathan Neuschäfer
-1 siblings, 0 replies; 4+ messages in thread
From: Jonathan Neuschäfer @ 2022-04-21 7:32 UTC (permalink / raw)
To: Peng Wu
Cc: j.neuschaefer, linus.walleij, openbmc, linux-gpio, linux-kernel,
liwei391
[-- Attachment #1: Type: text/plain, Size: 3186 bytes --]
Hello,
thank you for your patch!
On Thu, Apr 21, 2022 at 05:53:56AM +0000, Peng Wu wrote:
> In one of the error paths of the device_for_each_child_node() loop
> in wpcm450_gpio_register, add missing call to fwnode_handle_put.
Your patch changes multiple error patches, not just one of them. Please
change the commit message accordingly.
To make it easier to understand for the unfamiliar, please also mention:
- Where fwnode is acquired (in device_for_each_child_node?)
- Where the fwnode is released or used in the success (non-error) path.
I think (part of) the answer is: It is assigned to gpio->gc.fwnode
>
> Signed-off-by: Peng Wu <wupeng58@huawei.com>
> ---
> drivers/pinctrl/nuvoton/pinctrl-wpcm450.c | 23 +++++++++++++++++------
> 1 file changed, 17 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
> index 0dbeb91f0bf2..de4388b512d7 100644
> --- a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
> +++ b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
> @@ -1038,15 +1038,19 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
> if (!fwnode_property_read_bool(child, "gpio-controller"))
> continue;
Does the 'continue' also need a fwnode_handle_put call?
>
> ret = fwnode_property_read_u32(child, "reg", ®);
> - if (ret < 0)
> + if (ret < 0) {
> + fwnode_handle_put(child);
> return ret;
> + }
>
> gpio = &pctrl->gpio_bank[reg];
> gpio->pctrl = pctrl;
>
> - if (reg >= WPCM450_NUM_BANKS)
> + if (reg >= WPCM450_NUM_BANKS) {
> + fwnode_handle_put(child);
> return dev_err_probe(dev, -EINVAL,
> - "GPIO index %d out of range!\n", reg);
> + "GPIO index %d out of range!\n", reg);
Please leave the indentation as is, in this line.
> + }
>
> bank = &wpcm450_banks[reg];
> gpio->bank = bank;
> @@ -1060,8 +1064,10 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
> }
> ret = bgpio_init(&gpio->gc, dev, 4,
> dat, set, NULL, dirout, NULL, flags);
> - if (ret < 0)
> + if (ret < 0) {
> + fwnode_handle_put(child);
> return dev_err_probe(dev, ret, "GPIO initialization failed\n");
> + }
>
> gpio->gc.ngpio = bank->length;
> gpio->gc.set_config = wpcm450_gpio_set_config;
> @@ -1074,8 +1080,11 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
> girq->parent_handler = wpcm450_gpio_irqhandler;
> girq->parents = devm_kcalloc(dev, WPCM450_NUM_GPIO_IRQS,
> sizeof(*girq->parents), GFP_KERNEL);
> - if (!girq->parents)
> + if (!girq->parents) {
> + fwnode_handle_put(child);
> return -ENOMEM;
> + }
> +
> girq->default_type = IRQ_TYPE_NONE;
> girq->handler = handle_bad_irq;
>
> @@ -1091,8 +1100,10 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
> }
>
> ret = devm_gpiochip_add_data(dev, &gpio->gc, gpio);
> - if (ret)
> + if (ret) {
> + fwnode_handle_put(child);
> return dev_err_probe(dev, ret, "Failed to add GPIO chip\n");
> + }
> }
>
> return 0;
> --
> 2.17.1
>
Thanks,
Jonathan
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] pinctrl: nuvoton: Add missing fwnode_handle_put in wpcm450_gpio_register
@ 2022-04-21 7:32 ` Jonathan Neuschäfer
0 siblings, 0 replies; 4+ messages in thread
From: Jonathan Neuschäfer @ 2022-04-21 7:32 UTC (permalink / raw)
To: Peng Wu
Cc: linus.walleij, j.neuschaefer, linux-kernel, linux-gpio, liwei391,
openbmc
[-- Attachment #1: Type: text/plain, Size: 3186 bytes --]
Hello,
thank you for your patch!
On Thu, Apr 21, 2022 at 05:53:56AM +0000, Peng Wu wrote:
> In one of the error paths of the device_for_each_child_node() loop
> in wpcm450_gpio_register, add missing call to fwnode_handle_put.
Your patch changes multiple error patches, not just one of them. Please
change the commit message accordingly.
To make it easier to understand for the unfamiliar, please also mention:
- Where fwnode is acquired (in device_for_each_child_node?)
- Where the fwnode is released or used in the success (non-error) path.
I think (part of) the answer is: It is assigned to gpio->gc.fwnode
>
> Signed-off-by: Peng Wu <wupeng58@huawei.com>
> ---
> drivers/pinctrl/nuvoton/pinctrl-wpcm450.c | 23 +++++++++++++++++------
> 1 file changed, 17 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
> index 0dbeb91f0bf2..de4388b512d7 100644
> --- a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
> +++ b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
> @@ -1038,15 +1038,19 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
> if (!fwnode_property_read_bool(child, "gpio-controller"))
> continue;
Does the 'continue' also need a fwnode_handle_put call?
>
> ret = fwnode_property_read_u32(child, "reg", ®);
> - if (ret < 0)
> + if (ret < 0) {
> + fwnode_handle_put(child);
> return ret;
> + }
>
> gpio = &pctrl->gpio_bank[reg];
> gpio->pctrl = pctrl;
>
> - if (reg >= WPCM450_NUM_BANKS)
> + if (reg >= WPCM450_NUM_BANKS) {
> + fwnode_handle_put(child);
> return dev_err_probe(dev, -EINVAL,
> - "GPIO index %d out of range!\n", reg);
> + "GPIO index %d out of range!\n", reg);
Please leave the indentation as is, in this line.
> + }
>
> bank = &wpcm450_banks[reg];
> gpio->bank = bank;
> @@ -1060,8 +1064,10 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
> }
> ret = bgpio_init(&gpio->gc, dev, 4,
> dat, set, NULL, dirout, NULL, flags);
> - if (ret < 0)
> + if (ret < 0) {
> + fwnode_handle_put(child);
> return dev_err_probe(dev, ret, "GPIO initialization failed\n");
> + }
>
> gpio->gc.ngpio = bank->length;
> gpio->gc.set_config = wpcm450_gpio_set_config;
> @@ -1074,8 +1080,11 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
> girq->parent_handler = wpcm450_gpio_irqhandler;
> girq->parents = devm_kcalloc(dev, WPCM450_NUM_GPIO_IRQS,
> sizeof(*girq->parents), GFP_KERNEL);
> - if (!girq->parents)
> + if (!girq->parents) {
> + fwnode_handle_put(child);
> return -ENOMEM;
> + }
> +
> girq->default_type = IRQ_TYPE_NONE;
> girq->handler = handle_bad_irq;
>
> @@ -1091,8 +1100,10 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
> }
>
> ret = devm_gpiochip_add_data(dev, &gpio->gc, gpio);
> - if (ret)
> + if (ret) {
> + fwnode_handle_put(child);
> return dev_err_probe(dev, ret, "Failed to add GPIO chip\n");
> + }
> }
>
> return 0;
> --
> 2.17.1
>
Thanks,
Jonathan
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2022-04-26 2:05 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2022-04-21 5:53 [PATCH] pinctrl: nuvoton: Add missing fwnode_handle_put in wpcm450_gpio_register Peng Wu
2022-04-21 5:53 ` Peng Wu
2022-04-21 7:32 ` Jonathan Neuschäfer
2022-04-21 7:32 ` Jonathan Neuschäfer
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