Hi Renesas-ML Cc Saravana, Greg, Laurent, Geert I'm now testing v6.0.0-rc2 kernel on ULCB-KF board, and I noticed it doesn't probe sound card. I git-bisected and noticed that this patch breaks sound probe. commit 71066545b48e4259f89481199a0bbc7c35457738 ("driver core: Set fw_devlink.strict=1 by default") I could re-probe sound card if I reverted it. (My .config is using Y for all drivers) I'm not well understanding about this patch, but it seems it is related to deferred probe. My sound card needs many drivers to probe. HDMI Sound CPU Sound Codec x 2 (depends on I2C) Sound Card To probe "Sound Card", it needs other necessary drivers. But it seems some necessary drivers are not probed by above patch. In my quick check, "HDMI" and 1 of "Sound Codec" drivers are not probed. How can I solve this issue, or where I can check ? Thank you for your help !! Best regards --- Kuninori Morimoto