From: Tomi Valkeinen <tomi.valkei...@ti.com>

Allow NULL to be passed in 'dma_addr' for omap_gem_pin(), in case the
caller does not need the dma_addr.

Signed-off-by: Tomi Valkeinen <tomi.valkei...@ti.com>
Reviewed-by: Jean-Jacques Hiblot <jjhib...@ti.com>
---
 drivers/gpu/drm/omapdrm/omap_gem.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c 
b/drivers/gpu/drm/omapdrm/omap_gem.c
index 9201c21e206f..a6562d23d314 100644
--- a/drivers/gpu/drm/omapdrm/omap_gem.c
+++ b/drivers/gpu/drm/omapdrm/omap_gem.c
@@ -819,9 +819,11 @@ int omap_gem_pin(struct drm_gem_object *obj, dma_addr_t 
*dma_addr)
                        refcount_inc(&omap_obj->dma_addr_cnt);
                }
 
-               *dma_addr = omap_obj->dma_addr;
+               if (dma_addr)
+                       *dma_addr = omap_obj->dma_addr;
        } else if (omap_gem_is_contiguous(omap_obj)) {
-               *dma_addr = omap_obj->dma_addr;
+               if (dma_addr)
+                       *dma_addr = omap_obj->dma_addr;
        } else {
                ret = -EINVAL;
                goto fail;
-- 
2.17.1

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