drm/gma500: Remove struct psb_gem_object.npage

Calculate the number of pages in the BO's backing storage from
the size. Remove the npage field.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220308195222.13471-2-tzimmermann@suse.de

diff --git a/drivers/gpu/drm/gma500/gem.c b/drivers/gpu/drm/gma500/gem.c
index 8d65af8..fe7d242 100644 (file)
--- a/drivers/gpu/drm/gma500/gem.c
+++ b/drivers/gpu/drm/gma500/gem.c
@@ -51,7 +51,6 @@ int psb_gem_pin(struct psb_gem_object *pobj)
                             (gpu_base + pobj->offset), npages, 0, 0,
                             PSB_MMU_CACHED_MEMORY);
 
-       pobj->npage = npages;
        pobj->pages = pages;
 
 out:
@@ -71,6 +70,7 @@ void psb_gem_unpin(struct psb_gem_object *pobj)
        struct drm_device *dev = obj->dev;
        struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
        u32 gpu_base = dev_priv->gtt.gatt_start;
+       unsigned long npages;
 
        mutex_lock(&dev_priv->gtt_mutex);
 
@@ -81,16 +81,17 @@ void psb_gem_unpin(struct psb_gem_object *pobj)
        if (pobj->in_gart || pobj->stolen)
                goto out;
 
+       npages = obj->size / PAGE_SIZE;
+
        psb_mmu_remove_pages(psb_mmu_get_default_pd(dev_priv->mmu),
-                            (gpu_base + pobj->offset), pobj->npage, 0, 0);
+                            (gpu_base + pobj->offset), npages, 0, 0);
        psb_gtt_remove_pages(dev_priv, &pobj->resource);
 
        /* Reset caching flags */
-       set_pages_array_wb(pobj->pages, pobj->npage);
+       set_pages_array_wb(pobj->pages, npages);
 
        drm_gem_put_pages(obj, pobj->pages, true, false);
        pobj->pages = NULL;
-       pobj->npage = 0;
 
 out:
        mutex_unlock(&dev_priv->gtt_mutex);

diff --git a/drivers/gpu/drm/gma500/gem.h b/drivers/gpu/drm/gma500/gem.h
index 79cced4..96ef864 100644 (file)
--- a/drivers/gpu/drm/gma500/gem.h
+++ b/drivers/gpu/drm/gma500/gem.h
@@ -23,7 +23,6 @@ struct psb_gem_object {
        bool stolen;                    /* Backed from stolen RAM */
        bool mmapping;                  /* Is mmappable */
        struct page **pages;            /* Backing pages if present */
-       int npage;                      /* Number of backing pages */
 };
 
 static inline struct psb_gem_object *to_psb_gem_object(struct drm_gem_object *obj)

diff --git a/drivers/gpu/drm/gma500/gma_display.c b/drivers/gpu/drm/gma500/gma_display.c
index 60ba7de..dd80140 100644 (file)
--- a/drivers/gpu/drm/gma500/gma_display.c
+++ b/drivers/gpu/drm/gma500/gma_display.c
@@ -391,11 +391,9 @@ int gma_crtc_cursor_set(struct drm_crtc *crtc,
                        goto unref_cursor;
                }
 
-               /* Prevent overflow */
-               if (pobj->npage > 4)
-                       cursor_pages = 4;
-               else
-                       cursor_pages = pobj->npage;
+               cursor_pages = obj->size / PAGE_SIZE;
+               if (cursor_pages > 4)
+                       cursor_pages = 4; /* Prevent overflow */
 
                /* Copy the cursor to cursor mem */
                tmp_dst = dev_priv->vram_addr + cursor_pobj->offset;