Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/gma500: Remove unused psb_mmu_virtual_to_pfn
psb_mmu_virtual_to_pfn() was added in 2011 by
commit 8c8f1c958ab5 ("gma500: introduce the GTT and MMU handling logic")
but hasn't been used.
Remove it.
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250308234428.255164-1-linux@treblig.org
authored by
Dr. David Alan Gilbert
and committed by
Patrik Jakobsson
12ec4f30
62906756
-43
-41
drivers/gpu/drm/gma500/mmu.c
-41
drivers/gpu/drm/gma500/mmu.c
···
730
730
731
731
return ret;
732
732
}
733
-
734
-
int psb_mmu_virtual_to_pfn(struct psb_mmu_pd *pd, uint32_t virtual,
735
-
unsigned long *pfn)
736
-
{
737
-
int ret;
738
-
struct psb_mmu_pt *pt;
739
-
uint32_t tmp;
740
-
spinlock_t *lock = &pd->driver->lock;
741
-
742
-
down_read(&pd->driver->sem);
743
-
pt = psb_mmu_pt_map_lock(pd, virtual);
744
-
if (!pt) {
745
-
uint32_t *v;
746
-
747
-
spin_lock(lock);
748
-
v = kmap_atomic(pd->p);
749
-
tmp = v[psb_mmu_pd_index(virtual)];
750
-
kunmap_atomic(v);
751
-
spin_unlock(lock);
752
-
753
-
if (tmp != pd->invalid_pde || !(tmp & PSB_PTE_VALID) ||
754
-
!(pd->invalid_pte & PSB_PTE_VALID)) {
755
-
ret = -EINVAL;
756
-
goto out;
757
-
}
758
-
ret = 0;
759
-
*pfn = pd->invalid_pte >> PAGE_SHIFT;
760
-
goto out;
761
-
}
762
-
tmp = pt->v[psb_mmu_pt_index(virtual)];
763
-
if (!(tmp & PSB_PTE_VALID)) {
764
-
ret = -EINVAL;
765
-
} else {
766
-
ret = 0;
767
-
*pfn = tmp >> PAGE_SHIFT;
768
-
}
769
-
psb_mmu_pt_unmap_unlock(pt);
770
-
out:
771
-
up_read(&pd->driver->sem);
772
-
return ret;
773
-
}
-2
drivers/gpu/drm/gma500/mmu.h
-2
drivers/gpu/drm/gma500/mmu.h
···
71
71
uint32_t start_pfn,
72
72
unsigned long address,
73
73
uint32_t num_pages, int type);
74
-
extern int psb_mmu_virtual_to_pfn(struct psb_mmu_pd *pd, uint32_t virtual,
75
-
unsigned long *pfn);
76
74
extern void psb_mmu_set_pd_context(struct psb_mmu_pd *pd, int hw_context);
77
75
extern int psb_mmu_insert_pages(struct psb_mmu_pd *pd, struct page **pages,
78
76
unsigned long address, uint32_t num_pages,