drm/vmwgfx: Fix a couple of compile / sparse warnings and errors

Fixes
 *) an implicit function declaration on mips,
 *) a defined but not used label on !CONFIG_INTEL_IOMMU
 *) Hopefully a couple of sparse warnings where we implicitly typecast
    integer to __le32 and vice versa.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

2 files changed, 13 insertions, 3 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 0b5c7818ebfb..a278581ca276 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -453,12 +453,13 @@ static void vmw_get_initial_size(struct vmw_private *dev_priv)
  */
 static int vmw_dma_select_mode(struct vmw_private *dev_priv)
 {
-        const struct dma_map_ops *dma_ops = get_dma_ops(dev_priv->dev->dev);
         static const char *names[vmw_dma_map_max] = {
                 [vmw_dma_phys] = "Using physical TTM page addresses.",
                 [vmw_dma_alloc_coherent] = "Using coherent TTM pages.",
                 [vmw_dma_map_populate] = "Keeping DMA mappings.",
                 [vmw_dma_map_bind] = "Giving up DMA mappings early."};
+#ifdef CONFIG_X86
+        const struct dma_map_ops *dma_ops = get_dma_ops(dev_priv->dev->dev);
 
 #ifdef CONFIG_INTEL_IOMMU
         if (intel_iommu_enabled) {
@@ -482,7 +483,9 @@ static int vmw_dma_select_mode(struct vmw_private *dev_priv)
                 dev_priv->map_mode = vmw_dma_map_populate;
 #endif
 
+#ifdef CONFIG_INTEL_IOMMU
 out_fixup:
+#endif
         if (dev_priv->map_mode == vmw_dma_map_populate &&
             vmw_restrict_iommu)
                 dev_priv->map_mode = vmw_dma_map_bind;
@@ -498,6 +501,10 @@ out_fixup:
                 return -EINVAL;
 #endif
 
+#else /* CONFIG_X86 */
+        dev_priv->map_mode = vmw_dma_map_populate;
+#endif /* CONFIG_X86 */
+
         DRM_INFO("DMA map mode: %s\n", names[dev_priv->map_mode]);
 
         return 0;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c b/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c
index 6d0952366f91..6ef0b035becb 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c
@@ -145,7 +145,9 @@ static void vmw_gmr_free_descriptors(struct device *dev, dma_addr_t desc_dma,
                 }
 
                 page_virtual = kmap_atomic(page);
-                desc_dma = page_virtual[desc_per_page].ppn << PAGE_SHIFT;
+                desc_dma = (dma_addr_t)
+                        le32_to_cpu(page_virtual[desc_per_page].ppn) <<
+                        PAGE_SHIFT;
                 kunmap_atomic(page_virtual);
 
                 __free_page(page);
@@ -217,7 +219,8 @@ static int vmw_gmr_build_descriptors(struct device *dev,
         desc_dma = 0;
         list_for_each_entry_reverse(page, desc_pages, lru) {
                 page_virtual = kmap_atomic(page);
-                page_virtual[desc_per_page].ppn = desc_dma >> PAGE_SHIFT;
+                page_virtual[desc_per_page].ppn = cpu_to_le32
+                        (desc_dma >> PAGE_SHIFT);
                 kunmap_atomic(page_virtual);
                 desc_dma = dma_map_page(dev, page, 0, PAGE_SIZE,
                                         DMA_TO_DEVICE);