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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2017-04-21 00:33:57 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2017-06-02 10:57:07 +0300 |
| commit | 930dc19c0b7278c26c85f05f92cb417f2bd28aa3 (patch) | |
| tree | 7a7694930ad10791e9c19f8b1d0fdd9a0a879a32 /drivers/gpu/drm/omapdrm/omap_gem.c | |
| parent | 24fbaca0e20acebfcdf7468f03465d5b1966c314 (diff) | |
| download | linux-930dc19c0b7278c26c85f05f92cb417f2bd28aa3.tar.bz2 | |
drm: omapdrm: DMA-unmap pages for all buffer types when freeing buffers
Both coherent (uncached) and non-coherent (cached) buffers can have
their pages mapped to the device through the DMA mapping API. Make sure
to unmap any mapped page when freeing a buffer, regardless of its type.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/gpu/drm/omapdrm/omap_gem.c')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/omap_gem.c | 17 |
1 files changed, 6 insertions, 11 deletions
diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c index eb02a1399a10..94aef52c36ad 100644 --- a/drivers/gpu/drm/omapdrm/omap_gem.c +++ b/drivers/gpu/drm/omapdrm/omap_gem.c @@ -316,18 +316,13 @@ static int get_pages(struct drm_gem_object *obj, struct page ***pages) static void omap_gem_detach_pages(struct drm_gem_object *obj) { struct omap_gem_object *omap_obj = to_omap_bo(obj); + unsigned int npages = obj->size >> PAGE_SHIFT; + unsigned int i; - /* for non-cached buffers, ensure the new pages are clean because - * DSS, GPU, etc. are not cache coherent: - */ - if (omap_obj->flags & (OMAP_BO_WC|OMAP_BO_UNCACHED)) { - int i, npages = obj->size >> PAGE_SHIFT; - for (i = 0; i < npages; i++) { - if (omap_obj->dma_addrs[i]) - dma_unmap_page(obj->dev->dev, - omap_obj->dma_addrs[i], - PAGE_SIZE, DMA_BIDIRECTIONAL); - } + for (i = 0; i < npages; i++) { + if (omap_obj->dma_addrs[i]) + dma_unmap_page(obj->dev->dev, omap_obj->dma_addrs[i], + PAGE_SIZE, DMA_BIDIRECTIONAL); } kfree(omap_obj->dma_addrs); |