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Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0690-Revert-media-vb2-Allow-reqbufs-0-with-in-use-MMAP-bu.patch')
-rw-r--r--target/linux/brcm2708/patches-4.19/950-0690-Revert-media-vb2-Allow-reqbufs-0-with-in-use-MMAP-bu.patch55
1 files changed, 0 insertions, 55 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0690-Revert-media-vb2-Allow-reqbufs-0-with-in-use-MMAP-bu.patch b/target/linux/brcm2708/patches-4.19/950-0690-Revert-media-vb2-Allow-reqbufs-0-with-in-use-MMAP-bu.patch
deleted file mode 100644
index 32e4cd705c..0000000000
--- a/target/linux/brcm2708/patches-4.19/950-0690-Revert-media-vb2-Allow-reqbufs-0-with-in-use-MMAP-bu.patch
+++ /dev/null
@@ -1,55 +0,0 @@
-From db26693701ac11d20a16ca455886d810a6b67c2c Mon Sep 17 00:00:00 2001
-From: Dave Stevenson <dave.stevenson@raspberrypi.org>
-Date: Fri, 28 Jun 2019 11:30:49 +0100
-Subject: [PATCH 690/773] Revert "media: vb2: Allow reqbufs(0) with "in use"
- MMAP buffers"
-
-This reverts commit a2c73e18c1f657de6d654f51effa0a94863abbd8.
-An alternative version was accepted upstream. Revert this patch to
-apply that one.
-
-Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
----
- .../media/common/videobuf2/videobuf2-core.c | 23 +++++++++++++++++++
- 1 file changed, 23 insertions(+)
-
---- a/drivers/media/common/videobuf2/videobuf2-core.c
-+++ b/drivers/media/common/videobuf2/videobuf2-core.c
-@@ -554,6 +554,20 @@ bool vb2_buffer_in_use(struct vb2_queue
- }
- EXPORT_SYMBOL(vb2_buffer_in_use);
-
-+/*
-+ * __buffers_in_use() - return true if any buffers on the queue are in use and
-+ * the queue cannot be freed (by the means of REQBUFS(0)) call
-+ */
-+static bool __buffers_in_use(struct vb2_queue *q)
-+{
-+ unsigned int buffer;
-+ for (buffer = 0; buffer < q->num_buffers; ++buffer) {
-+ if (vb2_buffer_in_use(q, q->bufs[buffer]))
-+ return true;
-+ }
-+ return false;
-+}
-+
- void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb)
- {
- call_void_bufop(q, fill_user_buffer, q->bufs[index], pb);
-@@ -665,7 +679,16 @@ int vb2_core_reqbufs(struct vb2_queue *q
-
- if (*count == 0 || q->num_buffers != 0 ||
- (q->memory != VB2_MEMORY_UNKNOWN && q->memory != memory)) {
-+ /*
-+ * We already have buffers allocated, so first check if they
-+ * are not in use and can be freed.
-+ */
- mutex_lock(&q->mmap_lock);
-+ if (q->memory == VB2_MEMORY_MMAP && __buffers_in_use(q)) {
-+ mutex_unlock(&q->mmap_lock);
-+ dprintk(1, "memory in use, cannot free\n");
-+ return -EBUSY;
-+ }
-
- /*
- * Call queue_cancel to clean up any buffers in the PREPARED or