linux-kernel - Re: [PATCH v2] staging: media: atomisp: remove debug sysfs attributes active_bo and free

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Message-ID: <5ce9dac3-0b7a-45d1-8313-2f65165b50e7@suswa.mountain>
Date: Tue, 24 Jun 2025 20:32:26 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Abdelrahman Fekry <abdelrahmanfekry375@...il.com>
Cc: andy@...nel.org, hdegoede@...hat.com, mchehab@...nel.org,
	sakari.ailus@...ux.intel.com, gregkh@...uxfoundation.org,
	linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
	linux-staging@...ts.linux.dev, skhan@...uxfoundation.org,
	linux-kernel-mentees@...ts.linux.dev
Subject: Re: [PATCH v2] staging: media: atomisp: remove debug sysfs
 attributes active_bo and free_bo

On Tue, Jun 24, 2025 at 07:51:10PM +0300, Abdelrahman Fekry wrote:
> On Tue, Jun 24, 2025 at 7:31 PM Dan Carpenter <dan.carpenter@...aro.org> wrote:
> >
> > On Tue, Jun 24, 2025 at 05:49:43PM +0300, Abdelrahman Fekry wrote:
> > >  int hmm_init(void)
> > >  {
> > >       int ret;
> > > @@ -130,14 +48,6 @@ int hmm_init(void)
> > >        */
> > >       dummy_ptr = hmm_alloc(1);
> > >
> > > -     if (!ret) {
> > > -             ret = sysfs_create_group(&atomisp_dev->kobj,
> > > -                                      atomisp_attribute_group);
> > > -             if (ret)
> > > -                     dev_err(atomisp_dev,
> > > -                             "%s Failed to create sysfs\n", __func__);
> > > -     }
> > > -
> > >       return ret;
> >
> >
> > It's really unclear how this "return ret;" is supposed to work.  Was
> > that part of the sysfs_create_group()?
> >
> yes , but still it can be set by hmm_bo_device_init so even after removing
> sysfs_create_group , ret value depends on another function.
> 

You're in too big of a hurry.  Wait for a day between resending patches.
I have looked at this some more and it turns out that nothing checks the
error code so the "return ret;" doesn't work.  What do you think we
should do?

regards,
dan carpenter