[BUG] # macsmc_hwmon: NULL-deref in resume freezes Intel Macs on suspend/resume (carrying code t2linux already reverted)

### Pre-flight checklist - [x] I have searched existing issues and this is not a duplicate. - [x] I have read the [Contributing Guidelines](https://github.com/CachyOS/linux-cachyos/blob/master/CONTRIBUTING.md). - [x] I have verified the issue is reproducible with the latest available CachyOS kernel. - [x] I have tried to reproduce the issue on Arch Linux's `linux` kernel. ### Upstream / vanilla kernel check I have not tested with a vanilla/upstream kernel ### Kernel variant linux-cachyos (EEVDF, Clang) ### System information (cachyos-bugreport.sh) ```text https://paste.cachyos.org/p/79b543d.log ``` ### Manual system information (if cachyos-bugreport.sh is unavailable) ```text ``` ### Bug description `linux-cachyos` (via the `CachyOS/linux` fork tarball, tag `cachyos-7.1.2-3`) ships the experimental **macsmc-based Intel-Mac SMC** driver series. Its `macsmc_hwmon_resume()` dereferences a NULL pointer, hard-freezing the machine on resume from suspend on Intel Macs (reproduced on iMac19,1). The upstream source of these patches — **t2linux/linux-t2-patches — already reverted this entire series back to `applesmc`** on 2026-06-22 (commit `519ec3b` "Revert to applesmc"), before the `cachyos-7.1.2-3` build. CachyOS is carrying abandoned pre-revert code. ### Steps to reproduce 1. Suspend 2. Resume , happens every time on the 19,1 iMac. ### Expected behavior Resume should not crash. ### Actual behavior There's a crash and the system freezes. ### Logs / stack traces ```text Call Trace: <TASK> oops_end+0x3b/0xe0 page_fault_oops+0x3fc/0x460 ? ring_buffer_lock_reserve+0x2d0/0x380 exc_page_fault+0x66/0xd0 asm_exc_page_fault+0x26/0x30 RIP: 0010:macsmc_hwmon_resume+0x2b/0x160 [macsmc_hwmon] ? __pfx_macsmc_hwmon_resume+0x10/0x10 [macsmc_hwmon] ? __pfx_platform_pm_resume+0x10/0x10 device_resume+0x39c/0x990 dpm_resume+0x224/0x350 suspend_devices_and_enter+0x81b/0x9d0 pm_suspend+0x2c9/0x5a0 state_store+0x100/0x120 kernfs_fop_write_iter.llvm.5958117789424819207+0x186/0x1a0 __x64_sys_write+0x251/0x440 do_syscall_64+0xa6/0x3e0 ? __x64_sys_fcntl.cold+0x1ab/0x6f4 ? do_syscall_64+0xe4/0x3e0 ? __x64_sys_fcntl.cold+0x5d/0x6f4 ? get_close_on_exec+0x36/0x40 ? __x64_sys_fcntl.cold+0x419/0x6f4 ? do_syscall_64+0x65/0x3e0 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7fb13e2a7eca </TASK> ``` ### Additional system information _No response_