From 9cc63f8bcd560c760d0b12e15bba8f81c86237cf Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Fri, 14 Aug 2026 15:43:51 -0700 Subject: Merge branches 'expcb.2026.07.24a', 'misc.2026.07.30a', 'rcu-tasks.2026.07.30a', 'srcu.2026.08.11a' and 'torture.2026.08.14a' into HEAD Changes: Make expedited grace periods expedite normal RCU callbacks Miscellaneous fixes: * Improve diagnostic output with character task states. * Mark accesses to inform KCSAN of concurrency design. * Move from kmalloc() to kmalloc_obj(). * Documentation updates. * Improve handling of RCU deferred quiescent states. * Clean up unused function arguments and structure fields. * Reduce show_rcu_gp_kthreads() stack space. Tasks RCU updates: * Clean up after SRCU re-implementation of Tasks Trace RCU. * Mark accesses to inform KCSAN of concurrency design. * Add ->lazy_timer status to diagnostic output. * Remove an unnecessary memory barrier. * Fix a data race, courtesy of KCSAN. * Documentation updates. * Convert cond_resched_tasks_rcu_qs() from macro to static inline function. SRCU updates: * Add Rust helpers for SRCU. * Avoid losing queued work at cleanup_srcu_struct() time. Torture-test updates: * Preparation work for immediate RCU priority deboosting. * Test RCU readers from real interrupt handlers (as opposed to softirq). * Simplify code through use of cpumask_next_wrap(). * Improve diagnostic output with character task states. * Add rcutorture.nwriters parameter to allow lightweight stall testing, and rcutorture.stall_only to make doing so easier. * Test an RCU Tasks Trace grace period implying an RCU grace period. * Make RCU Tasks Trace torturing track reader batches. * Fix a data race, courtesy of KCSAN. * Plug a shuffle_tmp_mask memory leak on kthread spawn failure. --- drivers/rtc/nvmem.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 drivers/rtc/nvmem.c (limited to 'drivers/rtc/nvmem.c') diff --git a/drivers/rtc/nvmem.c b/drivers/rtc/nvmem.c new file mode 100644 index 000000000..37df7e805 --- /dev/null +++ b/drivers/rtc/nvmem.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * RTC subsystem, nvmem interface + * + * Copyright (C) 2017 Alexandre Belloni + */ + +#include +#include +#include +#include + +int devm_rtc_nvmem_register(struct rtc_device *rtc, + struct nvmem_config *nvmem_config) +{ + struct device *dev = rtc->dev.parent; + struct nvmem_device *nvmem; + + if (!nvmem_config) + return -ENODEV; + + nvmem_config->dev = dev; + nvmem_config->owner = rtc->owner; + nvmem_config->add_legacy_fixed_of_cells = true; + nvmem = devm_nvmem_register(dev, nvmem_config); + if (IS_ERR(nvmem)) + dev_err(dev, "failed to register nvmem device for RTC\n"); + + return PTR_ERR_OR_ZERO(nvmem); +} +EXPORT_SYMBOL_GPL(devm_rtc_nvmem_register); -- cgit v1.3.1