diff options
| author | Xinyu Chen <b03824@freescale.com> | 2011-12-09 13:06:43 +0800 |
|---|---|---|
| committer | Xinyu Chen <b03824@freescale.com> | 2011-12-09 13:06:43 +0800 |
| commit | bb41d1842fd9ba9af646794ab9939149548fc82b (patch) | |
| tree | aa3095b4a2315ea7918867781d8253893ea58a55 | |
| parent | 81a6b232b673a40424f4f62fbd5ce9ef088f3557 (diff) | |
ENGR00169880 v4l2 capture: reserve dummy framebuffer for 8M on probe
On GB with 512MB DDR size, when we taking 5M pixel picture,
the v4l2 capture will first allocate a 8M continuous memory for
first frame, which may cause allocation failed.
Reserve this buffer on probe when safe.
Signed-off-by: Xinyu Chen <xinyu.chen@freescale.com>
| -rw-r--r-- | drivers/media/video/mxc/capture/mxc_v4l2_capture.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/media/video/mxc/capture/mxc_v4l2_capture.c b/drivers/media/video/mxc/capture/mxc_v4l2_capture.c index 64443c22d999..35fa5ada92ce 100644 --- a/drivers/media/video/mxc/capture/mxc_v4l2_capture.c +++ b/drivers/media/video/mxc/capture/mxc_v4l2_capture.c @@ -2589,6 +2589,14 @@ static void init_camera_struct(cam_data *cam, struct platform_device *pdev) init_waitqueue_head(&cam->power_queue); spin_lock_init(&cam->queue_int_lock); spin_lock_init(&cam->dqueue_int_lock); + + cam->dummy_frame.vaddress = dma_alloc_coherent(0, + SZ_8M, &cam->dummy_frame.paddress, + GFP_DMA | GFP_KERNEL); + if (cam->dummy_frame.vaddress == 0) + pr_err("ERROR: v4l2 capture: Allocate dummy frame " + "failed.\n"); + cam->dummy_frame.buffer.length = SZ_8M; } static ssize_t show_streaming(struct device *dev, |