[PATCH 1/7][Unstable] UBUNTU: SAUCE: media: ivsc: csi: don't count privacy on as error

[You-Sheng Yang]

From: Wentong Wu <wentong.wu at intel.com>

BugLink: https://bugs.launchpad.net/bugs/2067364

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 at intel.com>
Signed-off-by: Wentong Wu <wentong.wu at intel.com>
Tested-by: Jason Chen <jason.z.chen at intel.com>
(cherry picked from https://lore.kernel.org/r/all/20240607132547.2820515-2-wentong.wu@intel.com)
Signed-off-by: You-Sheng Yang <vicamo.yang at canonical.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 f04a89584334..24060ac2c3a0 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, 1);
+	} else if (ret) {
 		ret = -EINVAL;
 		goto out;
 	}
-- 
2.43.0