Change:
<del> diff -u -r a/src/wl/sys/wl_linux.c b/src/wl/sys/wl_linux.c --- a/src/wl/sys/wl_linux.c	2022-03-23 00:35:42.930416350 +0000 +++ b/src/wl/sys/wl_linux.c	2022-03-23 00:40:12.903771013 +0000 @@ -2980,7 +2980,11 @@ </del> <ins> From 31b7849092c43805c7fbaf7518b99874aa1b310c Mon Sep 17 00:00:00 2001 From: Joan Bruguera <joanbrugueram@gmail.com> Date: Wed, 12 Jan 2022 20:49:20 +0100 Subject: [PATCH] Tentative fix for broadcom-wl 6.30.223.271 driver for Linux 5.17-rc1 Set netdev->dev_addr through dev_addr_mod + PDE_DATA fix Since Linux 5.17 netdev->dev_addr is const and must be changed through dev_addr_mod, otherwise a warning is logged in dmesg and bad things may happen. NB: The #if is not wrong, dev_addr_mod is defined since Linux 5.15-rc1 Plus a trivial fix for PDE_DATA. Applies on top of all the patches applied to broadcom-wl-dkms 6.30.223.271-28 on Arch Linux. See also: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=adeef3e32146a8d2a73c399dc6f5d76a449131b1 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=359745d78351c6f5442435f81549f0207ece28aa --- src/wl/sys/wl_linux.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/src/wl/sys/wl_linux.c b/src/wl/sys/wl_linux.c index e491df7..e4614fb 100644 --- a/src/wl/sys/wl_linux.c +++ b/src/wl/sys/wl_linux.c @@ -93,6 +93,10 @@ struct iw_statistics *wl_get_wireless_stats(struct net_device *dev); #include <wlc_wowl.h> +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 17, 0)) +#define PDE_DATA pde_data +#endif + #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0) static void wl_timer(struct timer_list *tl); #else @@ -490,6 +494,12 @@ wl_if_setup(struct net_device *dev) #endif } +#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 15, 0) +static inline void eth_hw_addr_set(struct net_device *dev, const void *addr) { +	memcpy(dev->dev_addr, addr, ETHER_ADDR_LEN); +} +#endif + static wl_info_t * wl_attach(uint16 vendor, uint16 device, ulong regs, uint bustype, void *btparam, uint irq, uchar* bar1_addr, uint32 bar1_size) @@ -634,7 +644,7 @@ wl_attach(uint16 vendor, uint16 device, ulong regs, WL_ERROR(("wl%d: Error setting MAC ADDRESSn", unit)); } #endif -	bcopy(&wl->pub->cur_etheraddr, dev->dev_addr, ETHER_ADDR_LEN); +	eth_hw_addr_set(dev, wl->pub->cur_etheraddr.octet); online_cpus = 1; @@ -1835,7 +1845,7 @@ wl_set_mac_address(struct net_device *dev, void *addr) WL_LOCK(wl); -	bcopy(sa->sa_data, dev->dev_addr, ETHER_ADDR_LEN); +	eth_hw_addr_set(dev, sa->sa_data); err = wlc_iovar_op(wl->wlc, "cur_etheraddr", NULL, 0, sa->sa_data, ETHER_ADDR_LEN, IOV_SET, (WL_DEV_IF(dev))->wlcif); WL_UNLOCK(wl); @@ -3010,7 +3020,7 @@ _wl_add_monitor_if(wl_task_t *task) </ins> else dev->type = ARPHRD_IEEE80211_RADIOTAP; <del> +#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 17, 0) bcopy(wl->dev->dev_addr, dev->dev_addr, ETHER_ADDR_LEN); +#else +	eth_hw_addr_set(wl->dev, dev->dev_addr); +#endif </del> <ins> -	bcopy(wl->dev->dev_addr, dev->dev_addr, ETHER_ADDR_LEN); +	eth_hw_addr_set(dev, wl->dev->dev_addr); </ins> #if defined(WL_USE_NETDEV_OPS) dev->netdev_ops = &wl_netdev_monitor_ops; <del> @@ -3261,7 +3265,11 @@ static ssize_t wl_proc_read(struct file *filp, char __user *buffer, size_t length, loff_t *offp) { +#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 17, 0) wl_info_t * wl = PDE_DATA(file_inode(filp)); +#else +	wl_info_t * wl = pde_data(file_inode(filp)); +#endif #endif int bcmerror, len; int to_user = 0; @@ -3318,7 +3326,11 @@ static ssize_t wl_proc_write(struct file *filp, const char __user *buff, size_t length, loff_t *offp) { +#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 17, 0) wl_info_t * wl = PDE_DATA(file_inode(filp)); +#else +	wl_info_t * wl = pde_data(file_inode(filp)); +#endif #endif int from_user = 0; int bcmerror; </del> <ins> -- 2.35.1 </ins>

Discussion:
Building fails when rebuilding system configuration. System configuration should build successfully with on kernel 5.18 There are no current maintainers. This appears to be a repetition of
Arch Linux appears to have a new patch here: Attempting to apply it has failed for me. I tried this block: Maybe someone who helped solve this the last time can comment?
Already have a PR up .
Looks like an issue with the patch for 5.17. Try replacing it with this one:
This issue has been mentioned on NixOS Discourse. There might be relevant details there: