Commit 12ec4f30 authored by Dr. David Alan Gilbert's avatar Dr. David Alan Gilbert Committed by Patrik Jakobsson
Browse files

drm/gma500: Remove unused psb_mmu_virtual_to_pfn 



psb_mmu_virtual_to_pfn() was added in 2011 by
commit 8c8f1c95 ("gma500: introduce the GTT and MMU handling logic")
but hasn't been used.

Remove it.

Signed-off-by: default avatarDr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: default avatarPatrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250308234428.255164-1-linux@treblig.org
parent 62906756

drivers/gpu/drm/gma500/mmu.c

+0 −41
Original line number Diff line number Diff line
@@ -730,44 +730,3 @@ int psb_mmu_insert_pages(struct psb_mmu_pd *pd, struct page **pages, 


	return ret;

}
 


int psb_mmu_virtual_to_pfn(struct psb_mmu_pd *pd, uint32_t virtual,

			   unsigned long *pfn)

{

	int ret;

	struct psb_mmu_pt *pt;

	uint32_t tmp;

	spinlock_t *lock = &pd->driver->lock;



	down_read(&pd->driver->sem);

	pt = psb_mmu_pt_map_lock(pd, virtual);

	if (!pt) {

		uint32_t *v;



		spin_lock(lock);

		v = kmap_atomic(pd->p);

		tmp = v[psb_mmu_pd_index(virtual)];

		kunmap_atomic(v);

		spin_unlock(lock);



		if (tmp != pd->invalid_pde || !(tmp & PSB_PTE_VALID) ||

		    !(pd->invalid_pte & PSB_PTE_VALID)) {

			ret = -EINVAL;

			goto out;

		}

		ret = 0;

		*pfn = pd->invalid_pte >> PAGE_SHIFT;

		goto out;

	}

	tmp = pt->v[psb_mmu_pt_index(virtual)];

	if (!(tmp & PSB_PTE_VALID)) {

		ret = -EINVAL;

	} else {

		ret = 0;

		*pfn = tmp >> PAGE_SHIFT;

	}

	psb_mmu_pt_unmap_unlock(pt);

out:

	up_read(&pd->driver->sem);

	return ret;

}

drivers/gpu/drm/gma500/mmu.h

+0 −2
Original line number Diff line number Diff line
@@ -71,8 +71,6 @@ extern int psb_mmu_insert_pfn_sequence(struct psb_mmu_pd *pd, 
				       uint32_t start_pfn,

				       unsigned long address,

				       uint32_t num_pages, int type);

extern int psb_mmu_virtual_to_pfn(struct psb_mmu_pd *pd, uint32_t virtual,

				  unsigned long *pfn);

extern void psb_mmu_set_pd_context(struct psb_mmu_pd *pd, int hw_context);

extern int psb_mmu_insert_pages(struct psb_mmu_pd *pd, struct page **pages,

				unsigned long address, uint32_t num_pages,