Hi,

Here's the relevant bit of the build log: drivers/net/usb/smsc95xx.c: In function ‘smsc95xx_status’: drivers/net/usb/smsc95xx.c:625:3: error: implicit declaration of function ‘generic_handle_domain_irq’; did you mean ‘generic_handle_irq’? [-Werror =implicit-function-declaration] 625 | generic_handle_domain_irq(pdata->irqdomain, PHY_HWIRQ); | ^~~~~~~~~~~~~~~~~~~~~~~~~ | generic_handle_irq drivers/net/usb/smsc95xx.c: In function ‘smsc95xx_bind’: drivers/net/usb/smsc95xx.c:1136:21: error: implicit declaration of function ‘irq_domain_alloc_named_fwnode’ [-Werror=implicit-function-declaration ] 1136 | pdata->irqfwnode = irq_domain_alloc_named_fwnode(usb_path); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/usb/smsc95xx.c:1136:19: warning: assignment to ‘struct fwnode_handle *’ from ‘int’ makes pointer from integer without a cast [-Wint-co nversion] 1136 | pdata->irqfwnode = irq_domain_alloc_named_fwnode(usb_path); | ^ drivers/net/usb/smsc95xx.c:1142:21: error: implicit declaration of function ‘irq_domain_create_linear’ [-Werror=implicit-function-declaration] 1142 | pdata->irqdomain = irq_domain_create_linear(pdata->irqfwnode, | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/usb/smsc95xx.c:1144:12: error: ‘irq_domain_simple_ops’ undeclared (first use in this function); did you mean ‘irq_domain_ops’? 1144 | &irq_domain_simple_ops, | ^~~~~~~~~~~~~~~~~~~~~ | irq_domain_ops drivers/net/usb/smsc95xx.c:1144:12: note: each undeclared identifier is reported only once for each function it appears in drivers/net/usb/smsc95xx.c:1151:12: error: implicit declaration of function ‘irq_create_mapping’; did you mean ‘irq_dispose_mapping’? [-Werror=imp licit-function-declaration] 1151 | phy_irq = irq_create_mapping(pdata->irqdomain, PHY_HWIRQ); | ^~~~~~~~~~~~~~~~~~ | irq_dispose_mapping drivers/net/usb/smsc95xx.c:1245:2: error: implicit declaration of function ‘irq_domain_remove’ [-Werror=implicit-function-declaration] 1245 | irq_domain_remove(pdata->irqdomain); | ^~~~~~~~~~~~~~~~~ drivers/net/usb/smsc95xx.c:1248:2: error: implicit declaration of function ‘irq_domain_free_fwnode’; did you mean ‘irq_domain_get_of_node’? [-Werr or=implicit-function-declaration] 1248 | irq_domain_free_fwnode(pdata->irqfwnode); | ^~~~~~~~~~~~~~~~~~~~~~ | irq_domain_get_of_node drivers/net/usb/smsc95xx.c: In function ‘smsc95xx_unbind’: drivers/net/usb/smsc95xx.c:1262:22: error: implicit declaration of function ‘irq_find_mapping’; did you mean ‘irq_dispose_mapping’? [-Werror=impli cit-function-declaration] 1262 | irq_dispose_mapping(irq_find_mapping(pdata->irqdomain, PHY_HWIRQ)); | ^~~~~~~~~~~~~~~~ | irq_dispose_mapping

The build is for 32-bit x86, the defconfig can be found here: https://github.com/urjaman/i586con/blob/master/brext/board/linux.config

The build failure also happens with 5.15.62 and 63.