Re: [PATCH 2/6] mfd: cros_ec: free IRQ automatically
From: Enric Balletbo Serra
Date: Tue Feb 20 2018 - 03:52:29 EST
Hi Vincent,
2018-02-20 9:00 GMT+01:00 Vincent Palatin <vpalatin@xxxxxxxxxxxx>:
> On Mon, Feb 19, 2018 at 11:40 PM, Enric Balletbo i Serra
> <enric.balletbo@xxxxxxxxxxxxx> wrote:
>> From: Vincent Palatin <vpalatin@xxxxxxxxxxxx>
>>
>> Free the IRQ we might have requested when removing the cros_ec device,
>> so we can unload and reload the driver properly.
>>
>> Signed-off-by: Vincent Palatin <vpalatin@xxxxxxxxxxxx>
>> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
>> ---
>> drivers/mfd/cros_ec.c | 17 ++++++-----------
>> 1 file changed, 6 insertions(+), 11 deletions(-)
>>
>> diff --git a/drivers/mfd/cros_ec.c b/drivers/mfd/cros_ec.c
>> index 74780f2964a1..d1a4fbee9380 100644
>> --- a/drivers/mfd/cros_ec.c
>> +++ b/drivers/mfd/cros_ec.c
>> @@ -119,9 +119,9 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
>> }
>>
>> if (ec_dev->irq) {
>> - err = request_threaded_irq(ec_dev->irq, NULL, ec_irq_thread,
>> - IRQF_TRIGGER_LOW | IRQF_ONESHOT,
>> - "chromeos-ec", ec_dev);
>> + err = devm_request_threaded_irq(dev, ec_dev->irq, NULL,
>> + ec_irq_thread, IRQF_TRIGGER_LOW | IRQF_ONESHOT,
>> + "chromeos-ec", ec_dev);
>> if (err) {
>> dev_err(dev, "Failed to request IRQ %d: %d",
>> ec_dev->irq, err);
>> @@ -135,7 +135,7 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
>> dev_err(dev,
>> "Failed to register Embedded Controller subdevice %d\n",
>> err);
>> - goto fail_mfd;
>> + return err;
>> }
>>
>> if (ec_dev->max_passthru) {
>> @@ -153,7 +153,7 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
>> dev_err(dev,
>> "Failed to register Power Delivery subdevice %d\n",
>> err);
>> - goto fail_mfd;
>> + return err;
>> }
>> }
>>
>> @@ -162,7 +162,7 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
>> if (err) {
>> mfd_remove_devices(dev);
>> dev_err(dev, "Failed to register sub-devices\n");
>> - goto fail_mfd;
>> + return err;
>> }
>> }
>>
>> @@ -180,11 +180,6 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
>> cros_ec_acpi_install_gpe_handler(dev);
>>
>> return 0;
>> -
>> -fail_mfd:
>> - if (ec_dev->irq)
>> - free_irq(ec_dev->irq, ec_dev);
>> - return err;
>> }
>> EXPORT_SYMBOL(cros_ec_register);
>
>
> You need to remove the "free_irq(ec_dev->irq, ec_dev);" in cros_ec_remove() too.
> as done there:
> https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/866858/15/drivers/mfd/cros_ec.c
>
> it was missing originally but was added by: 'f58b14e6632a mfd:
> cros_ec: Free IRQ on exit'
>
Many thanks to catch this. I'll wait a bit more for if I receive more
feedback on the other patches and send a second version of this
patchset.
Regards,
Enric
>
>>
>> --
>> 2.16.1
>>