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Subject: [media] tw686x: Specify that the DMA is 32 bits Author: Ezequiel Garcia <[email protected]> Date: Fri Apr 1 19:38:21 2016 -0300 Set vb2_queue.gfp_flags to GFP_DMA32. Otherwise it will start to create bounce buffers which is something you want to avoid since those are in limited supply. Without this patch, DMA scatter-gather may not work because machines can ran out of buffers easily. Signed-off-by: Ezequiel Garcia <[email protected]> Signed-off-by: Hans Verkuil <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> drivers/media/pci/tw686x/tw686x-video.c | 1 + 1 file changed, 1 insertion(+) --- diff --git a/drivers/media/pci/tw686x/tw686x-video.c b/drivers/media/pci/tw686x/tw686x-video.c index 2356fa2e951d..118e9fac9f28 100644 --- a/drivers/media/pci/tw686x/tw686x-video.c +++ b/drivers/media/pci/tw686x/tw686x-video.c @@ -848,6 +848,7 @@ int tw686x_video_init(struct tw686x_dev *dev) vc->vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; vc->vidq.min_buffers_needed = 2; vc->vidq.lock = &vc->vb_mutex; + vc->vidq.gfp_flags = GFP_DMA32; err = vb2_queue_init(&vc->vidq); if (err) { _______________________________________________ linuxtv-commits mailing list [email protected] http://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
