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| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2015-11-27 12:00:37 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2016-11-02 11:38:28 +0300 |
| commit | 6cb096562e36009d9d6427851a6b441edabe66ab (patch) | |
| tree | b5a46fd87537e0226bac48e0a6ee880789f1cf25 /drivers | |
| parent | a7e8cd39af6ac815736c31a65898a9951d9d2bd3 (diff) | |
| download | linux-6cb096562e36009d9d6427851a6b441edabe66ab.tar.xz | |
drm/omap: omap_gem: Do not try to unmap page which is not mapped
It might be possible that the page has been unmapped already in
omap_gem_cpu_sync() so check before calling dma_unmap_page().
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/omap_gem.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c index 505dee0db973..d4e1e11466f8 100644 --- a/drivers/gpu/drm/omapdrm/omap_gem.c +++ b/drivers/gpu/drm/omapdrm/omap_gem.c @@ -336,8 +336,10 @@ static void omap_gem_detach_pages(struct drm_gem_object *obj) if (omap_obj->flags & (OMAP_BO_WC|OMAP_BO_UNCACHED)) { int i, npages = obj->size >> PAGE_SHIFT; for (i = 0; i < npages; i++) { - dma_unmap_page(obj->dev->dev, omap_obj->addrs[i], - PAGE_SIZE, DMA_BIDIRECTIONAL); + if (omap_obj->addrs[i]) + dma_unmap_page(obj->dev->dev, + omap_obj->addrs[i], + PAGE_SIZE, DMA_BIDIRECTIONAL); } } |