Currently if starting stream goes with privacy mode on, the whole pipeline will fail because MEI CSI counts privacy mode on as error. In fact, the ongoing MEI command is well executed by firmware as well even if privacy mode is turned on. The status (-1) of command response is just to indicate current privacy on status instead of failed to execute command by firmware. This patch set changes the behavior to notify privacy mode on via v4l2 privacy controlinstead of fail the ongoing MEI command. This patch set adds one dedicated lock for v4l2 control handler to avoid dead locking issue as well. And the useless privacy status in struct mei_csi is removed to make code clean. --- v1 -> v2: 1. switch `CSI_PRIVACY_ON` to `notif.cont.cont == CSI_PRIVACY_ON` Wentong Wu (3): media: ivsc: csi: don't count privacy on as error media: ivsc: csi: add separate lock for v4l2 control handler media: ivsc: csi: remove privacy status in struct mei_csi drivers/media/pci/intel/ivsc/mei_csi.c | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) -- 2.34.1
