[Intel-gfx] [PATCH v7 0/4] drm: Move struct drm_device.pdev to legacy

[Thomas Zimmermann]

Hi Jani

Am 27.04.21 um 14:04 schrieb Jani Nikula:
> On Tue, 27 Apr 2021, Thomas Zimmermann <tzimmermann at suse.de> wrote:
>> V7 of the patchset fixes some bitrot in the intel driver.
>>
>> The pdev field in struct drm_device points to a PCI device structure and
>> goes back to UMS-only days when all DRM drivers were for PCI devices.
>> Meanwhile we also support USB, SPI and platform devices. Each of those
>> uses the generic device stored in struct drm_device.dev.
>>
>> To reduce duplication and remove the special case of PCI, this patchset
>> converts all modesetting drivers from pdev to dev and makes pdev a field
>> for legacy UMS drivers.
>>
>> For PCI devices, the pointer in struct drm_device.dev can be upcasted to
>> struct pci_device; or tested for PCI with dev_is_pci(). In several places
>> the code can use the dev field directly.
>>
>> After converting all drivers and the DRM core, the pdev fields becomes
>> only relevant for legacy drivers. In a later patchset, we may want to
>> convert these as well and remove pdev entirely.
> 
> On the series,
> 
> Reviewed-by: Jani Nikula <jani.nikula at intel.com>
> 
> How should we merge these?

Thanks for the quick reply.

There is another pdev patch that I just sent out. [1] It has to go into 
the intel tree. After it landed, I want to get this patchset into 
drm-misc-next ASAP. Otherwise, drm-tip would stop building.

This should fix things in the correct order and finally remove pdev for 
current drivers.

Best regards
Thomas

[1] 
https://lore.kernel.org/dri-devel/20210427110747.2065-1-tzimmermann@suse.de/T/#u

> 
> 
> 
>>
>> v7:
>> 	* fix instances of pdev that have benn added under i915/
>> v6:
>> 	* also remove assignment in i915/selftests in later patch (Chris)
>> v5:
>> 	* remove assignment in later patch (Chris)
>> v4:
>> 	* merged several patches
>> 	* moved core changes into separate patch
>> 	* vmwgfx build fix
>> v3:
>> 	* merged several patches
>> 	* fix one pdev reference in nouveau (Jeremy)
>> 	* rebases
>> v2:
>> 	* move whitespace fixes into separate patches (Alex, Sam)
>> 	* move i915 gt/ and gvt/ changes into separate patches (Joonas)
>>
>> Thomas Zimmermann (4):
>>    drm/i915/gt: Remove reference to struct drm_device.pdev
>>    drm/i915: Remove reference to struct drm_device.pdev
>>    drm/i915: Don't assign to struct drm_device.pdev
>>    drm: Move struct drm_device.pdev to legacy section
>>
>>   drivers/gpu/drm/i915/gt/intel_region_lmem.c      | 2 +-
>>   drivers/gpu/drm/i915/i915_drv.c                  | 1 -
>>   drivers/gpu/drm/i915/intel_runtime_pm.h          | 2 +-
>>   drivers/gpu/drm/i915/selftests/mock_gem_device.c | 1 -
>>   include/drm/drm_device.h                         | 6 +++---
>>   5 files changed, 5 insertions(+), 7 deletions(-)
>>
>> --
>> 2.31.1
>>
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer

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