diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0326-staging-bcm2835-codec-Fix-imbalance-in-dma_buf_get-d.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0326-staging-bcm2835-codec-Fix-imbalance-in-dma_buf_get-d.patch | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0326-staging-bcm2835-codec-Fix-imbalance-in-dma_buf_get-d.patch b/target/linux/bcm27xx/patches-5.4/950-0326-staging-bcm2835-codec-Fix-imbalance-in-dma_buf_get-d.patch new file mode 100644 index 0000000000..f0fdfd29c8 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0326-staging-bcm2835-codec-Fix-imbalance-in-dma_buf_get-d.patch @@ -0,0 +1,30 @@ +From 0c941589b9bfb07cd31c792b445e630817e956d1 Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.org> +Date: Mon, 7 Oct 2019 14:02:57 +0100 +Subject: [PATCH] staging: bcm2835-codec: Fix imbalance in + dma_buf_get/dma_buf_put + +When represented with a dmabuf buffer that had previously been +imported, there was a call to dma_buf_get without a matching +dma_buf_put. This left dmabufs in limbo after all users had +supposedly released them. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> +--- + .../staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c | 5 +++++ + 1 file changed, 5 insertions(+) + +--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c ++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c +@@ -2112,6 +2112,11 @@ static int bcm2835_codec_buf_prepare(str + } + + buf->mmal.dma_buf = dma_buf; ++ } else { ++ /* We already have a reference count on the dmabuf, so ++ * release the one we acquired above. ++ */ ++ dma_buf_put(dma_buf); + } + ret = 0; + break; |