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Re: [Freedreno] [PATCH RFC v1 00/52] drm/crtc: Rename struct drm_crtc::dev to drm_dev



Hi

Am 12.07.23 um 20:31 schrieb Sean Paul:
On Wed, Jul 12, 2023 at 10:52 AM Jani Nikula <jani.nikula@xxxxxxxxx> wrote:

On Wed, 12 Jul 2023, Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx> wrote:
Hello,

while I debugged an issue in the imx-lcdc driver I was constantly
irritated about struct drm_device pointer variables being named "dev"
because with that name I usually expect a struct device pointer.

I think there is a big benefit when these are all renamed to "drm_dev".
I have no strong preference here though, so "drmdev" or "drm" are fine
for me, too. Let the bikesheding begin!

Some statistics:

$ git grep -ohE 'struct drm_device *\* *[^ (),;]*' v6.5-rc1 | sort | uniq -c | 
sort -n
       1 struct drm_device *adev_to_drm
       1 struct drm_device *drm_
       1 struct drm_device          *drm_dev
       1 struct drm_device        *drm_dev
       1 struct drm_device *pdev
       1 struct drm_device *rdev
       1 struct drm_device *vdev
       2 struct drm_device *dcss_drv_dev_to_drm
       2 struct drm_device **ddev
       2 struct drm_device *drm_dev_alloc
       2 struct drm_device *mock
       2 struct drm_device *p_ddev
       5 struct drm_device *device
       9 struct drm_device * dev
      25 struct drm_device *d
      95 struct drm_device *
     216 struct drm_device *ddev
     234 struct drm_device *drm_dev
     611 struct drm_device *drm
    4190 struct drm_device *dev

This series starts with renaming struct drm_crtc::dev to drm_dev. If
it's not only me and others like the result of this effort it should be
followed up by adapting the other structs and the individual usages in
the different drivers.

I think this is an unnecessary change. In drm, a dev is usually a drm
device, i.e. struct drm_device *. As shown by the numbers above.


I'd really prefer this patch (series or single) is not accepted. This
will cause problems for everyone cherry-picking patches to a
downstream kernel (LTS or distro tree). I usually wouldn't expect
sympathy here, but the questionable benefit does not outweigh the cost
IM[biased]O.

I agree.


Sean

If folks insist on following through with this anyway, I'm firmly in the
camp the name should be "drm" and nothing else.


BR,
Jani.


--
Jani Nikula, Intel Open Source Graphics Center

--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)

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