On Thu, 22 Sep 2022 14:28:02 +0900 Yoshihiro Shimoda wrote: > Add Renesas Ethernet Switch driver for R-Car S4-8 to be used as an > ethernet controller. Looks like we have a lot of sparse warnings here. Please try building the module with W=1 C=1 and make sure it builds cleanly. https://sparse.docs.kernel.org/en/latest/