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31 lines
1.0 KiB
Diff
31 lines
1.0 KiB
Diff
From 4542b5d7b4e00b11dd37d93986b624c58b198765 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.org>
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Date: Mon, 7 Oct 2019 14:02:57 +0100
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Subject: [PATCH] staging: bcm2835-codec: Fix imbalance in
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dma_buf_get/dma_buf_put
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When represented with a dmabuf buffer that had previously been
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imported, there was a call to dma_buf_get without a matching
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dma_buf_put. This left dmabufs in limbo after all users had
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supposedly released them.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
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---
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.../staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c | 5 +++++
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1 file changed, 5 insertions(+)
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--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
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+++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
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@@ -2112,6 +2112,11 @@ static int bcm2835_codec_buf_prepare(str
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}
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buf->mmal.dma_buf = dma_buf;
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+ } else {
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+ /* We already have a reference count on the dmabuf, so
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+ * release the one we acquired above.
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+ */
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+ dma_buf_put(dma_buf);
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}
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ret = 0;
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break;
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