Re: [Xenomai] how to bring gpio to user space

2018-05-02 Thread Greg Gallagher 
No problem, I think the rest of the log was from the panic and may not
be an issue after this fix.

On Wed, May 2, 2018 at 9:56 AM, Шевченко Тарас Григорьевич
 wrote:
> yes, sorry for this and thanks for help
>
> С уважением и надеждой на сотрудничество,
> Шевченко Т.Г.
>
> - Исходное сообщение -
> От: "Greg Gallagher" 
> Кому: "Шевченко Тарас Григорьевич" 
> Копия: "xenomai" , "Olej" 
> Отправленные: Среда, 2 Май 2018 г 16:47:57
> Тема: Re: how to bring gpio to user space
>
> It looks like you are calling rtdm_dev_register twice, so the second
> one complains that it already exists.  Take out the second call and
> see what happens.
>
>
> // rtdm_sem_init(&sem, 0);// init the global semaphore
>rtdm_printk("gpio TRY register Driver \n");
>err=rtdm_dev_register(&device);
> if ((err=rtdm_dev_register(&device))!=0){
> // gpio_free(GPIO_PIN);
> rtdm_printk("err number = %d\n",err);
> if(err == -EINVAL)
> rtdm_printk("err EINVAL = %d\n",err);
> if(err == -EEXIST)
> rtdm_printk("err EEXIST = %d\n",err);
>  if(err == -ENOMEM)
> rtdm_printk("err ENOMEM = %d\n",err);
>  if(err == -EAGAIN)
> rtdm_printk("err EAGAIN = %d\n",err);
>  if(err == -ENOSYS)
> rtdm_printk("err ENOSYS = %d\n",err);
>  if(err == -ENXIO)
> rtdm_printk("err ENXIO = %d\n",err);
>
> kfree(&device);
> return err;
> }
>
> -Greg
>
> On Wed, May 2, 2018 at 4:42 AM, Шевченко Тарас Григорьевич
>  wrote:
>> HI Community
>> I try to register simple rtdm gpio driver
>>
>> but get the error EEXIST  ? could you explain what is wrong or missing ?
>> and what daes it mean  "invalid opcode:  [#1] SMP" ?
>>
>> [ 1415.642644] gpio Driver Init
>> [ 1415.642646] gpio TRY register Driver
>> [ 1415.642881] err number = -17
>> [ 1415.642885] err EEXIST = -17
>> [ 1415.642922] [ cut here ]
>> [ 1415.643010] kernel BUG at mm/slub.c:3873!
>> [ 1415.643066] invalid opcode:  [#1] SMP
>>

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Re: [Xenomai] how to bring gpio to user space

2018-05-02 Thread Шевченко Тарас Григорьевич 
yes, sorry for this and thanks for help

С уважением и надеждой на сотрудничество,
Шевченко Т.Г.

- Исходное сообщение -
От: "Greg Gallagher" 
Кому: "Шевченко Тарас Григорьевич" 
Копия: "xenomai" , "Olej" 
Отправленные: Среда, 2 Май 2018 г 16:47:57
Тема: Re: how to bring gpio to user space

It looks like you are calling rtdm_dev_register twice, so the second
one complains that it already exists.  Take out the second call and
see what happens.


// rtdm_sem_init(&sem, 0);// init the global semaphore
   rtdm_printk("gpio TRY register Driver \n");
   err=rtdm_dev_register(&device);
if ((err=rtdm_dev_register(&device))!=0){
// gpio_free(GPIO_PIN);
rtdm_printk("err number = %d\n",err);
if(err == -EINVAL)
rtdm_printk("err EINVAL = %d\n",err);
if(err == -EEXIST)
rtdm_printk("err EEXIST = %d\n",err);
 if(err == -ENOMEM)
rtdm_printk("err ENOMEM = %d\n",err);
 if(err == -EAGAIN)
rtdm_printk("err EAGAIN = %d\n",err);
 if(err == -ENOSYS)
rtdm_printk("err ENOSYS = %d\n",err);
 if(err == -ENXIO)
rtdm_printk("err ENXIO = %d\n",err);

kfree(&device);
return err;
}

-Greg

On Wed, May 2, 2018 at 4:42 AM, Шевченко Тарас Григорьевич
 wrote:
> HI Community
> I try to register simple rtdm gpio driver
>
> but get the error EEXIST  ? could you explain what is wrong or missing ?
> and what daes it mean  "invalid opcode:  [#1] SMP" ?
>
> [ 1415.642644] gpio Driver Init
> [ 1415.642646] gpio TRY register Driver
> [ 1415.642881] err number = -17
> [ 1415.642885] err EEXIST = -17
> [ 1415.642922] [ cut here ]
> [ 1415.643010] kernel BUG at mm/slub.c:3873!
> [ 1415.643066] invalid opcode:  [#1] SMP
>

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Re: [Xenomai] how to bring gpio to user space

2018-05-02 Thread Greg Gallagher 
It looks like you are calling rtdm_dev_register twice, so the second
one complains that it already exists.  Take out the second call and
see what happens.


// rtdm_sem_init(&sem, 0);// init the global semaphore
   rtdm_printk("gpio TRY register Driver \n");
   err=rtdm_dev_register(&device);
if ((err=rtdm_dev_register(&device))!=0){
// gpio_free(GPIO_PIN);
rtdm_printk("err number = %d\n",err);
if(err == -EINVAL)
rtdm_printk("err EINVAL = %d\n",err);
if(err == -EEXIST)
rtdm_printk("err EEXIST = %d\n",err);
 if(err == -ENOMEM)
rtdm_printk("err ENOMEM = %d\n",err);
 if(err == -EAGAIN)
rtdm_printk("err EAGAIN = %d\n",err);
 if(err == -ENOSYS)
rtdm_printk("err ENOSYS = %d\n",err);
 if(err == -ENXIO)
rtdm_printk("err ENXIO = %d\n",err);

kfree(&device);
return err;
}

-Greg

On Wed, May 2, 2018 at 4:42 AM, Шевченко Тарас Григорьевич
 wrote:
> HI Community
> I try to register simple rtdm gpio driver
>
> but get the error EEXIST  ? could you explain what is wrong or missing ?
> and what daes it mean  "invalid opcode:  [#1] SMP" ?
>
> [ 1415.642644] gpio Driver Init
> [ 1415.642646] gpio TRY register Driver
> [ 1415.642881] err number = -17
> [ 1415.642885] err EEXIST = -17
> [ 1415.642922] [ cut here ]
> [ 1415.643010] kernel BUG at mm/slub.c:3873!
> [ 1415.643066] invalid opcode:  [#1] SMP
>

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[Xenomai] how to bring gpio to user space

2018-05-02 Thread Шевченко Тарас Григорьевич 
HI Community
I try to register simple rtdm gpio driver

but get the error EEXIST  ? could you explain what is wrong or missing ?
and what daes it mean  "invalid opcode:  [#1] SMP" ?

[ 1415.642644] gpio Driver Init
[ 1415.642646] gpio TRY register Driver 
[ 1415.642881] err number = -17
[ 1415.642885] err EEXIST = -17
[ 1415.642922] [ cut here ]
[ 1415.643010] kernel BUG at mm/slub.c:3873!
[ 1415.643066] invalid opcode:  [#1] SMP

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