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Message-Id: <20220901101649.3499848-1-jiasheng@iscas.ac.cn>
Date: Thu, 1 Sep 2022 18:16:49 +0800
From: Jiasheng Jiang <jiasheng@...as.ac.cn>
To: gregkh@...uxfoundation.org
Cc: hdegoede@...hat.com, arnd@...db.de, linux-kernel@...r.kernel.org,
Jiasheng Jiang <jiasheng@...as.ac.cn>
Subject: Re: Re: [PATCH v2 1/2] virt: vbox: Add check for device_create_file
On Thu, Sep 01, 2022 at 05:39:46PM +0800, Greg KH wrote:
>> - device_create_file(dev, &dev_attr_host_version);
>> - device_create_file(dev, &dev_attr_host_features);
>> +
>> + ret = device_create_file(gdev->dev, &dev_attr_host_features);
>> + if (ret)
>> + goto err_unregister_misc_device_user;
>> + ret = device_create_file(gdev->dev, &dev_attr_host_version);
>> + if (ret)
>> + goto err_remove_file_features;
>>
>> vbg_info("vboxguest: misc device minor %d, IRQ %d, I/O port %x, MMIO at %pap (size %pap)\n",
>> gdev->misc_device.minor, pci->irq, gdev->io_port,
>> @@ -399,6 +404,8 @@ static int vbg_pci_probe(struct pci_dev *pci, const struct pci_device_id *id)
>>
>> return 0;
>>
>> +err_remove_file_features:
>> + device_remove_file(gdev->dev, &dev_attr_host_features);
> Please make a patch series that is linked together, the one you just did
> was not properly threaded at all (hint, use git send-email).
>
> And again, this is not the correct way to solve this issue, use a
> default attribute group for the driver instead. No driver should ever
> be adding or removing files individually like this.
Need I use the group to replace the individually removal in
vbg_pci_remove() too?
Thanks,
Jiang
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