media: staging: rkisp1: cap: fix return values from pm functions

If no errors occurs, pm functions return usage counters, so they can
return positive numbers.
This happens when streaming from multiple capture devices (mainpath and
selfpath).

Fix simultaneous streaming from mainpath and selfpath by not failing
when pm usage counters returns a positive number.

Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

diff --git a/drivers/staging/media/rkisp1/rkisp1-capture.c b/drivers/staging/media/rkisp1/rkisp1-capture.c
index 7e3d498d0b4f88bc6c34525d4e04eaef216ecd89..b371bbd70d63f5c5f98b1abaa971afac30101e5d 100644 (file)
--- a/drivers/staging/media/rkisp1/rkisp1-capture.c
+++ b/drivers/staging/media/rkisp1/rkisp1-capture.c
@@ -892,7 +892,7 @@ static void rkisp1_vb2_stop_streaming(struct vb2_queue *queue)
 
        v4l2_pipeline_pm_put(&node->vdev.entity);
        ret = pm_runtime_put(rkisp1->dev);
-       if (ret)
+       if (ret < 0)
                dev_err(rkisp1->dev, "power down failed error:%d\n", ret);
 
        rkisp1_dummy_buf_destroy(cap);
@@ -945,7 +945,7 @@ rkisp1_vb2_start_streaming(struct vb2_queue *queue, unsigned int count)
                goto err_ret_buffers;
 
        ret = pm_runtime_get_sync(cap->rkisp1->dev);
-       if (ret) {
+       if (ret < 0) {
                dev_err(cap->rkisp1->dev, "power up failed %d\n", ret);
                goto err_destroy_dummy;
        }