M865SW-742: media: isi: add status checking when open video device

Add ISI stream status checking when user try to open it.

Signed-off-by: Guoniu.zhou <guoniu.zhou@nxp.com>
Reviewed-by: Robby Cai <robby.cai@nxp.com>

diff --git a/drivers/staging/media/imx/imx8-isi-cap.c b/drivers/staging/media/imx/imx8-isi-cap.c
index e7b42a4..ae736a8 100644 (file)
--- a/drivers/staging/media/imx/imx8-isi-cap.c
+++ b/drivers/staging/media/imx/imx8-isi-cap.c
@@ -751,7 +751,7 @@ static int mxc_isi_capture_open(struct file *file)
        }
        mutex_unlock(&isi_cap->lock);
 
-       if (mxc_isi->m2m_enabled) {
+       if (mxc_isi->m2m_enabled || isi_cap->is_streaming[isi_cap->id]) {
                dev_err(dev, "ISI channel[%d] is busy\n", isi_cap->id);
                return ret;
        }