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SubjectRe: [PATCH -next] gpio: mockup: remove gpio debugfs when remove device
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On 2022/8/19 20:49, Bartosz Golaszewski wrote:
> On Tue, Aug 16, 2022 at 4:34 PM Wei Yongjun <weiyongjun1@huawei.com> wrote:
>> GPIO mockup debugfs is created in gpio_mockup_probe() but
>> forgot to remove when remove device. This patch add a devm
>> managed callback for removing them.
>>
> The tag -next is for patches that address issues that are in next but
> not yet in master.


Got it. Thanks.


>
>> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
>> ---
>> drivers/gpio/gpio-mockup.c | 11 +++++++++++
>> 1 file changed, 11 insertions(+)
>>
>> diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c
>> index 8943cea92764..1fdc444b093b 100644
>> --- a/drivers/gpio/gpio-mockup.c
>> +++ b/drivers/gpio/gpio-mockup.c
>> @@ -373,6 +373,13 @@ static void gpio_mockup_debugfs_setup(struct device *dev,
>> }
>> }
>>
>> +static void gpio_mockup_debugfs_cleanup(void *data)
>> +{
>> + struct gpio_mockup_chip *chip = data;
>> +
>> + debugfs_remove_recursive(chip->dbg_dir);
>> +}
>> +
>> static void gpio_mockup_dispose_mappings(void *data)
>> {
>> struct gpio_mockup_chip *chip = data;
>> @@ -455,6 +462,10 @@ static int gpio_mockup_probe(struct platform_device *pdev)
>>
>> gpio_mockup_debugfs_setup(dev, chip);
>>
>> + rv = devm_add_action_or_reset(dev, gpio_mockup_debugfs_cleanup, chip);
>> + if (rv)
>> + return rv;
>> +
> Please return that function directly.


Will fix it.


>
>> return 0;
>> }
>>
>> --
>> 2.34.1
>>
> This isn't very relevant as the module needs to be unloaded anyway in
> order to reconfigure the simulated device but I'll apply it as it's
> technically correct. Did you see we have a new one - gpio-sim - that
> uses configfs?
>

gpio-mockup is used for testing other drivers with overlay dts, and
triggered

this issue. I though gpio-sim not work with dts, but it should works well.

I will have a try to using the new gpio-sim module.


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