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# 57a4e3a9 11-Mar-2024 Jani Nikula <[email protected]>

Revert "drm/panthor: Fix undefined panthor_device_suspend/resume symbol issue"

This reverts commit 674dc7f61aefea81901c21402946074927e63f1a.

The commit causes a recursive dependency in kconfig:

dr

Revert "drm/panthor: Fix undefined panthor_device_suspend/resume symbol issue"

This reverts commit 674dc7f61aefea81901c21402946074927e63f1a.

The commit causes a recursive dependency in kconfig:

drivers/iommu/Kconfig:14:error: recursive dependency detected!
drivers/iommu/Kconfig:14: symbol IOMMU_SUPPORT is selected by DRM_PANTHOR
drivers/gpu/drm/panthor/Kconfig:3: symbol DRM_PANTHOR depends on PM
kernel/power/Kconfig:183: symbol PM is selected by PM_SLEEP
kernel/power/Kconfig:117: symbol PM_SLEEP depends on HIBERNATE_CALLBACKS
kernel/power/Kconfig:35: symbol HIBERNATE_CALLBACKS is selected by XEN_SAVE_RESTORE
arch/x86/xen/Kconfig:67: symbol XEN_SAVE_RESTORE depends on XEN
arch/x86/xen/Kconfig:6: symbol XEN depends on PARAVIRT
arch/x86/Kconfig:781: symbol PARAVIRT is selected by HYPERV
drivers/hv/Kconfig:5: symbol HYPERV depends on X86_LOCAL_APIC
arch/x86/Kconfig:1106: symbol X86_LOCAL_APIC depends on X86_UP_APIC
arch/x86/Kconfig:1081: symbol X86_UP_APIC prompt is visible depending on PCI_MSI
drivers/pci/Kconfig:39: symbol PCI_MSI is selected by AMD_IOMMU
drivers/iommu/amd/Kconfig:3: symbol AMD_IOMMU depends on IOMMU_SUPPORT
For a resolution refer to Documentation/kbuild/kconfig-language.rst
subsection "Kconfig recursive dependency limitations"

Fixes: 674dc7f61aef ("drm/panthor: Fix undefined panthor_device_suspend/resume symbol issue")
Cc: Boris Brezillon <[email protected]>
Cc: Liviu Dudau <[email protected]>
Cc: Steven Price <[email protected]>
Acked-by: Boris Brezillon <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Jani Nikula <[email protected]>

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Revision tags: v6.8
# 674dc7f6 04-Mar-2024 Boris Brezillon <[email protected]>

drm/panthor: Fix undefined panthor_device_suspend/resume symbol issue

panthor_device_resume/suspend() are only compiled when CONFIG_PM is
enabled but panthro_drv.c doesn't use the pm_ptr() macro to

drm/panthor: Fix undefined panthor_device_suspend/resume symbol issue

panthor_device_resume/suspend() are only compiled when CONFIG_PM is
enabled but panthro_drv.c doesn't use the pm_ptr() macro to conditionally
discard resume/suspend assignments, which causes undefined symbol
errors at link time when !PM.

We could fix that by using pm_ptr(), but supporting the !PM case makes
little sense (the whole point of these embedded GPUs is to be low power,
so proper PM is a basic requirement in that case). So let's just enforce
the presence of CONFIG_PM with a Kconfig dependency instead.

If someone needs to relax this dependency, it can be done in a follow-up.

Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Signed-off-by: Boris Brezillon <[email protected]>
Reviewed-by: Liviu Dudau <[email protected]>
Reviewed-by: Steven Price <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

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Revision tags: v6.8-rc7
# d72f0490 29-Feb-2024 Boris Brezillon <[email protected]>

drm/panthor: Allow driver compilation

Now that all blocks are available, we can add/update Kconfig/Makefile
files to allow compilation.

v6:
- Add Maxime's and Heiko's acks
- Keep source files alpha

drm/panthor: Allow driver compilation

Now that all blocks are available, we can add/update Kconfig/Makefile
files to allow compilation.

v6:
- Add Maxime's and Heiko's acks
- Keep source files alphabetically ordered in the Makefile

v4:
- Add Steve's R-b

v3:
- Add a dep on DRM_GPUVM
- Fix dependencies in Kconfig
- Expand help text to (hopefully) describe which GPUs are to be
supported by this driver and which are for panfrost.

Co-developed-by: Steven Price <[email protected]>
Signed-off-by: Steven Price <[email protected]>
Signed-off-by: Boris Brezillon <[email protected]>
Acked-by: Steven Price <[email protected]> # MIT+GPL2 relicensing,Arm
Acked-by: Grant Likely <[email protected]> # MIT+GPL2 relicensing,Linaro
Acked-by: Boris Brezillon <[email protected]> # MIT+GPL2 relicensing,Collabora
Reviewed-by: Steven Price <[email protected]>
Acked-by: Maxime Ripard <[email protected]>
Acked-by: Heiko Stuebner <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

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