linux-kernel - [PATCH] dma-buf: fix sanity check in dma_buf

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Date:   Wed,  8 Aug 2018 08:25:40 +0200
From:   Gerd Hoffmann <kraxel@...hat.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     Chris Wilson <chris@...is-wilson.co.uk>,
        Gerd Hoffmann <kraxel@...hat.com>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        linux-media@...r.kernel.org (open list:DMA BUFFER SHARING FRAMEWORK),
        linaro-mm-sig@...ts.linaro.org (moderated list:DMA BUFFER SHARING
        FRAMEWORK), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] dma-buf: fix sanity check in dma_buf_export

Commit 09ea0dfbf972 made map_atomic and map function pointers optional,
but didn't adapt the sanity check in dma_buf_export.  Fix that.

Note that the atomic map interface has been removed altogether meanwhile
(commit f664a52695), therefore we have to remove the map check only.

Signed-off-by: Gerd Hoffmann <kraxel@...hat.com>
---
 drivers/dma-buf/dma-buf.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 13884474d1..02f7f9a899 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -405,7 +405,6 @@ struct dma_buf *dma_buf_export(const struct dma_buf_export_info *exp_info)
 			  || !exp_info->ops->map_dma_buf
 			  || !exp_info->ops->unmap_dma_buf
 			  || !exp_info->ops->release
-			  || !exp_info->ops->map
 			  || !exp_info->ops->mmap)) {
 		return ERR_PTR(-EINVAL);
 	}
-- 
2.9.3