Re: [v3,3/8] drm/omap: accept NULL for dma_addr in omap_gem_pin

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On 07/10/2019 13:25, Jean-Jacques Hiblot wrote:
From: Tomi Valkeinen <tomi.valkeinen@xxxxxx>

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.valkeinen@xxxxxx>
---
  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;
Reviewed-by: Jean-Jacques Hiblot <jjhiblot@xxxxxx>
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