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

diff --git a/drivers/gpu/drm/gma500/mmu.c b/drivers/gpu/drm/gma500/mmu.c
index 4d78b33eaa8230419aeab56510c58b475763301a..e6753282e70eb7459b9f7a1c8a171597b473d7cc 100644 (file)
--- a/drivers/gpu/drm/gma500/mmu.c
+++ b/drivers/gpu/drm/gma500/mmu.c
@@ -730,44 +730,3 @@ out:
 
        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;
-}

diff --git a/drivers/gpu/drm/gma500/mmu.h b/drivers/gpu/drm/gma500/mmu.h
index d4b5720ef08e7f9d21fdac589d2e348311c1df4e..e6d39703718c49a7c6345f8787593acd049e0130 100644 (file)
--- a/drivers/gpu/drm/gma500/mmu.h
+++ b/drivers/gpu/drm/gma500/mmu.h
@@ -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,