[PATCH 1/3] media: ivsc: csi: don't count privacy on as error

[Wentong Wu <wentong.wu@intel.com>]

Prior to the ongoing command privacy is on, it would return -1 to
indicate the current privacy status, and the ongoing command would
be well executed by firmware as well, so this is not error. This
patch changes its behavior to notify privacy on directly by V4L2
privacy control instead of reporting error.

Fixes: 29006e196a56 ("media: pci: intel: ivsc: Add CSI submodule")
Reported-by: Hao Yao <hao.yao@intel.com>
Signed-off-by: Wentong Wu <wentong.wu@intel.com>
Tested-by: Jason Chen <jason.z.chen@intel.com>
---
 drivers/media/pci/intel/ivsc/mei_csi.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/media/pci/intel/ivsc/mei_csi.c b/drivers/media/pci/intel/ivsc/mei_csi.c
index 89b582a221ab..004ebab0b814 100644
--- a/drivers/media/pci/intel/ivsc/mei_csi.c
+++ b/drivers/media/pci/intel/ivsc/mei_csi.c
@@ -190,7 +190,11 @@ static int mei_csi_send(struct mei_csi *csi, u8 *buf, size_t len)
 
 	/* command response status */
 	ret = csi->cmd_response.status;
-	if (ret) {
+	if (ret == -1) {
+		/* notify privacy on instead of reporting error */
+		ret = 0;
+		v4l2_ctrl_s_ctrl(csi->privacy_ctrl, CSI_PRIVACY_ON);
+	} else if (ret) {
 		ret = -EINVAL;
 		goto out;
 	}
-- 
2.34.1