From: Hans Verkuil Date: Mon, 24 Jun 2024 09:52:59 +0000 (+0300) Subject: media: vivid: don't set HDMI TX controls if there are no HDMI outputs X-Git-Tag: v6.11-rc1~142^2~52 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=17763960b1784578e8fe915304b330922f646209;p=thirdparty%2Fkernel%2Flinux.git media: vivid: don't set HDMI TX controls if there are no HDMI outputs When setting the EDID it would attempt to update two controls that are only present if there is an HDMI output configured. If there isn't any (e.g. when the vivid module is loaded with node_types=1), then calling VIDIOC_S_EDID would crash. Fix this by first checking if outputs are present. Signed-off-by: Hans Verkuil --- diff --git a/drivers/media/test-drivers/vivid/vivid-vid-cap.c b/drivers/media/test-drivers/vivid/vivid-vid-cap.c index 3a3041a0378f1..afa0dc5bcdae1 100644 --- a/drivers/media/test-drivers/vivid/vivid-vid-cap.c +++ b/drivers/media/test-drivers/vivid/vivid-vid-cap.c @@ -1554,8 +1554,10 @@ int vidioc_s_edid(struct file *file, void *_fh, return -EINVAL; if (edid->blocks == 0) { dev->edid_blocks = 0; - v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, 0); - v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, 0); + if (dev->num_outputs) { + v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, 0); + v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, 0); + } phys_addr = CEC_PHYS_ADDR_INVALID; goto set_phys_addr; } @@ -1579,8 +1581,10 @@ int vidioc_s_edid(struct file *file, void *_fh, display_present |= dev->display_present[i] << j++; - v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, display_present); - v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, display_present); + if (dev->num_outputs) { + v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, display_present); + v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, display_present); + } set_phys_addr: /* TODO: a proper hotplug detect cycle should be emulated here */