drm/i915: Split GEN6 PPGTT cleanup

This cleanup is similar to the GEN8 cleanup (though less necessary).
Having everything split will make cleaning the initialization path error
paths easier to understand.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 1b20cf7b323b364b6a96a77fe7d2ca4d043e7cea..6b027f5cbd9a7aacfc0f477e03ef0dc319676fc1 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -1001,22 +1001,21 @@ static void gen6_ppgtt_insert_entries(struct i915_address_space *vm,
                kunmap_atomic(pt_vaddr);
 }
 
-static void gen6_ppgtt_cleanup(struct i915_address_space *vm)
+static void gen6_ppgtt_unmap_pages(struct i915_hw_ppgtt *ppgtt)
 {
-       struct i915_hw_ppgtt *ppgtt =
-               container_of(vm, struct i915_hw_ppgtt, base);
        int i;
 
-       list_del(&vm->global_link);
-       drm_mm_takedown(&ppgtt->base.mm);
-       drm_mm_remove_node(&ppgtt->node);
-
        if (ppgtt->pt_dma_addr) {
                for (i = 0; i < ppgtt->num_pd_entries; i++)
                        pci_unmap_page(ppgtt->base.dev->pdev,
                                       ppgtt->pt_dma_addr[i],
                                       4096, PCI_DMA_BIDIRECTIONAL);
        }
+}
+
+static void gen6_ppgtt_free(struct i915_hw_ppgtt *ppgtt)
+{
+       int i;
 
        kfree(ppgtt->pt_dma_addr);
        for (i = 0; i < ppgtt->num_pd_entries; i++)
@@ -1024,6 +1023,19 @@ static void gen6_ppgtt_cleanup(struct i915_address_space *vm)
        kfree(ppgtt->pt_pages);
 }
 
+static void gen6_ppgtt_cleanup(struct i915_address_space *vm)
+{
+       struct i915_hw_ppgtt *ppgtt =
+               container_of(vm, struct i915_hw_ppgtt, base);
+
+       list_del(&vm->global_link);
+       drm_mm_takedown(&ppgtt->base.mm);
+       drm_mm_remove_node(&ppgtt->node);
+
+       gen6_ppgtt_unmap_pages(ppgtt);
+       gen6_ppgtt_free(ppgtt);
+}
+
 static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt)
 {
 #define GEN6_PD_ALIGN (PAGE_SIZE * 16)