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Re: [PATCH 05/13] libnvdimm, blk: use devm_add_action to release bdev resources

From Dan Williams <dan.j.williams@intel.com>
Newsgroups linux.kernel
Subject Re: [PATCH 05/13] libnvdimm, blk: use devm_add_action to release bdev resources
Date 2016-03-24 16:20 +0100
Message-ID <rgfdg-4ss-21@gated-at.bofh.it> (permalink)
References <rg2g1-3vC-3@gated-at.bofh.it> <rg2g3-3vC-25@gated-at.bofh.it> <rgbW2-25h-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Thu, Mar 24, 2016 at 4:48 AM, Johannes Thumshirn <jthumshirn@suse.de> wrote:
> On Mittwoch, 23. März 2016 18:25:47 CET Dan Williams wrote:
>> Register a callback to clean up the request_queue and put the gendisk at
>> driver disable time.
>>
>> Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
>> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
>
> [...]
>
>>
>>  static int nd_blk_remove(struct device *dev)
>>  {
>> -     struct nd_blk_device *blk_dev = dev_get_drvdata(dev);
>> -
>>       if (is_nd_btt(dev))
>>               nvdimm_namespace_detach_btt(to_nd_btt(dev));
>> -     else
>> -             nd_blk_detach_disk(blk_dev);
>> -     kfree(blk_dev);
>> -
>>       return 0;
>>  }
>>
>
> Can't this be void?
>

That's not how the core defines this:

struct device_driver {
...
        int (*remove) (struct device *dev);
...
};

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[PATCH 05/13] libnvdimm,  blk: use devm_add_action to release bdev resources Dan Williams <dan.j.williams@intel.com> - 2016-03-24 02:30 +0100
  Re: [PATCH 05/13] libnvdimm, blk: use devm_add_action to release bdev resources Johannes Thumshirn <jthumshirn@suse.de> - 2016-03-24 12:50 +0100
    Re: [PATCH 05/13] libnvdimm, blk: use devm_add_action to release bdev resources Dan Williams <dan.j.williams@intel.com> - 2016-03-24 16:20 +0100
      Re: [PATCH 05/13] libnvdimm, blk: use devm_add_action to release bdev resources Johannes Thumshirn <jthumshirn@suse.de> - 2016-03-24 16:20 +0100
        Re: [PATCH 05/13] libnvdimm, blk: use devm_add_action to release bdev resources Dan Williams <dan.j.williams@intel.com> - 2016-03-24 16:30 +0100

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