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SubjectRe: [PATCH v6] tpm: fix reference counting for struct tpm_chip
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Hi,

On 19.02.21 at 10:13, Jarkko Sakkinen wrote:

>> + rc = cdev_device_add(&chip->cdevs, &chip->devs);
>> + if (rc) {
>> + dev_err(&chip->devs,
>> + "unable to cdev_device_add() %s, major %d, minor %d, err=%d\n",
>> + dev_name(&chip->devs), MAJOR(chip->devs.devt),
>> + MINOR(chip->devs.devt), rc);
>> + goto out_put_devs;
>> + }
>> +
>> + return 0;
>> +
>> +out_put_devs:
>
> A nit:
>
> 1. You have already del_cdev:
> 2. Here you use a differing convention with out prefix.
>
> I'd suggest that you put err_ to both:
>
> 1. err_del_cdev
> 2. err_put_devs
>
> It's quite coherent what we have already:
>
> linux-tpmdd on  next took 8s
> ❯ git grep "^err_.*" drivers/char/tpm/ | wc -l
> 17
>


The label del_cdev is indeed a bit inconsistent with the rest of the code.
But AFAICS out_put_devs is not:
1. all labels in tpm2-space.c start with out_
2. there are more hits for out_ across the whole TPM code (i.e. with the same command
you used above I get 31 hits for _out) than for err_.

I suggest to rename del_cdev to something like out_del_cdev or maybe out_cdev which
seems to be even closer to the existing naming scheme for labels.


Regards,
Lino


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