[PATCH v2 1/7] drm/xe: Introduce const cast helper

[Lucas De Marchi]

On Wed, Jul 17, 2024 at 09:51:49PM GMT, Michal Wajdeczko wrote:
>Typically we want to preserve pointer constness when converting
>from one xe pointer to another, but in some rare cases, like kunit
>parameter conversions, we might want to discard this constness.
>Add a helper that we will use to clearly indicate our intention.
>
>Signed-off-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
>---
> drivers/gpu/drm/xe/xe_device.h | 5 +++++
> 1 file changed, 5 insertions(+)
>
>diff --git a/drivers/gpu/drm/xe/xe_device.h b/drivers/gpu/drm/xe/xe_device.h
>index 0a2a3e7fd402..c2b1f9f066bd 100644
>--- a/drivers/gpu/drm/xe/xe_device.h
>+++ b/drivers/gpu/drm/xe/xe_device.h
>@@ -20,6 +20,11 @@ static inline struct xe_device *pdev_to_xe_device(struct pci_dev *pdev)
> 	return pci_get_drvdata(pdev);
> }
>
>+static inline struct xe_device *xe_device_const_cast(const struct xe_device *xe)
>+{
>+	return pdev_to_xe_device(to_pci_dev(xe->drm.dev));

why are you going through pdev_to_xe_device() rather than doing what the
function name says and just remove the const?

Lucas De Marchi

>+}
>+
> static inline struct xe_device *ttm_to_xe_device(struct ttm_device *ttm)
> {
> 	return container_of(ttm, struct xe_device, ttm);
>-- 
>2.43.0
>