From c16218402a000bb25c1277c43ae98c11bcb59bd1 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Mon, 4 May 2015 07:51:06 -0300 Subject: [PATCH] [media] videobuf2: return -EPIPE from DQBUF after the last buffer If the last buffer was dequeued from a capture queue, let poll return immediately and let DQBUF return -EPIPE to signal there will no more buffers to dequeue until STREAMOFF. The driver signals the last buffer by setting the V4L2_BUF_FLAG_LAST. To reenable dequeuing on the capture queue, the driver must explicitly call vb2_clear_last_buffer_queued. The last buffer queued flag is cleared automatically during STREAMOFF. Signed-off-by: Philipp Zabel Acked-by: Hans Verkuil Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab --- Reading git-format-patch failed