diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c index 22190ad28e8b..0f492b0940b3 100644 --- a/drivers/rtc/class.c +++ b/drivers/rtc/class.c @@ -20,13 +20,13 @@ #include "rtc-core.h" - static DEFINE_IDA(rtc_ida); struct class *rtc_class; static void rtc_device_release(struct device *dev) { struct rtc_device *rtc = to_rtc_device(dev); + ida_simple_remove(&rtc_ida, rtc->id); kfree(rtc); } @@ -44,7 +44,6 @@ int rtc_hctosys_ret = -ENODEV; static struct timespec64 old_rtc, old_system, old_delta; - static int rtc_suspend(struct device *dev) { struct rtc_device *rtc = to_rtc_device(dev); @@ -68,7 +67,6 @@ static int rtc_suspend(struct device *dev) ktime_get_real_ts64(&old_system); old_rtc.tv_sec = rtc_tm_to_time64(&tm); - /* * To avoid drift caused by repeated suspend/resumes, * which each can add ~1 second drift error, @@ -80,7 +78,7 @@ static int rtc_suspend(struct device *dev) if (delta_delta.tv_sec < -2 || delta_delta.tv_sec >= 2) { /* * if delta_delta is too large, assume time correction - * has occured and set old_delta to the current delta. + * has occurred and set old_delta to the current delta. */ old_delta = delta; } else { @@ -133,7 +131,7 @@ static int rtc_resume(struct device *dev) * to keep things accurate. */ sleep_time = timespec64_sub(sleep_time, - timespec64_sub(new_system, old_system)); + timespec64_sub(new_system, old_system)); if (sleep_time.tv_sec >= 0) timekeeping_inject_sleeptime64(&sleep_time); @@ -394,9 +392,9 @@ EXPORT_SYMBOL_GPL(__rtc_register_device); * rtc_register_device instead */ struct rtc_device *devm_rtc_device_register(struct device *dev, - const char *name, - const struct rtc_class_ops *ops, - struct module *owner) + const char *name, + const struct rtc_class_ops *ops, + struct module *owner) { struct rtc_device *rtc; int err; diff --git a/drivers/rtc/dev.c b/drivers/rtc/dev.c index f68aae035b81..84feb2565abd 100644 --- a/drivers/rtc/dev.c +++ b/drivers/rtc/dev.c @@ -57,7 +57,7 @@ static void rtc_uie_task(struct work_struct *work) } else if (rtc->oldsecs != tm.tm_sec) { num = (tm.tm_sec + 60 - rtc->oldsecs) % 60; rtc->oldsecs = tm.tm_sec; - rtc->uie_timer.expires = jiffies + HZ - (HZ/10); + rtc->uie_timer.expires = jiffies + HZ - (HZ / 10); rtc->uie_timer_active = 1; rtc->uie_task_active = 0; add_timer(&rtc->uie_timer); @@ -68,6 +68,7 @@ static void rtc_uie_task(struct work_struct *work) if (num) rtc_handle_legacy_irq(rtc, num, RTC_UF); } + static void rtc_uie_timer(struct timer_list *t) { struct rtc_device *rtc = from_timer(rtc, t, uie_timer); @@ -199,14 +200,14 @@ static __poll_t rtc_dev_poll(struct file *file, poll_table *wait) } static long rtc_dev_ioctl(struct file *file, - unsigned int cmd, unsigned long arg) + unsigned int cmd, unsigned long arg) { int err = 0; struct rtc_device *rtc = file->private_data; const struct rtc_class_ops *ops = rtc->ops; struct rtc_time tm; struct rtc_wkalrm alarm; - void __user *uarg = (void __user *) arg; + void __user *uarg = (void __user *)arg; err = mutex_lock_interruptible(&rtc->ops_lock); if (err) @@ -230,7 +231,7 @@ static long rtc_dev_ioctl(struct file *file, case RTC_PIE_ON: if (rtc->irq_freq > rtc->max_user_freq && - !capable(CAP_SYS_RESOURCE)) + !capable(CAP_SYS_RESOURCE)) err = -EACCES; break; } @@ -387,8 +388,9 @@ static long rtc_dev_ioctl(struct file *file, err = ops->ioctl(rtc->dev.parent, cmd, arg); if (err == -ENOIOCTLCMD) err = -ENOTTY; - } else + } else { err = -ENOTTY; + } break; } @@ -400,6 +402,7 @@ static long rtc_dev_ioctl(struct file *file, static int rtc_dev_fasync(int fd, struct file *file, int on) { struct rtc_device *rtc = file->private_data; + return fasync_helper(fd, file, on, &rtc->async_queue); } diff --git a/drivers/rtc/hctosys.c b/drivers/rtc/hctosys.c index eacbe500c44b..a74d0d890600 100644 --- a/drivers/rtc/hctosys.c +++ b/drivers/rtc/hctosys.c @@ -30,7 +30,7 @@ static int __init rtc_hctosys(void) }; struct rtc_device *rtc = rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE); - if (rtc == NULL) { + if (!rtc) { pr_info("unable to open rtc device (%s)\n", CONFIG_RTC_HCTOSYS_DEVICE); goto err_open; @@ -41,7 +41,6 @@ static int __init rtc_hctosys(void) dev_err(rtc->dev.parent, "hctosys: unable to read the hardware clock\n"); goto err_read; - } tv64.tv_sec = rtc_tm_to_time64(&tm); diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index 28bd767e03a0..ccb7d6b4da3b 100644 --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c @@ -84,11 +84,12 @@ static int rtc_valid_range(struct rtc_device *rtc, struct rtc_time *tm) static int __rtc_read_time(struct rtc_device *rtc, struct rtc_time *tm) { int err; - if (!rtc->ops) + + if (!rtc->ops) { err = -ENODEV; - else if (!rtc->ops->read_time) + } else if (!rtc->ops->read_time) { err = -EINVAL; - else { + } else { memset(tm, 0, sizeof(struct rtc_time)); err = rtc->ops->read_time(rtc->dev.parent, tm); if (err < 0) { @@ -144,14 +145,13 @@ int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm) err = -ENODEV; else if (rtc->ops->set_time) err = rtc->ops->set_time(rtc->dev.parent, tm); - else if (rtc->ops->set_mmss64) { - time64_t secs64 = rtc_tm_to_time64(tm); - - err = rtc->ops->set_mmss64(rtc->dev.parent, secs64); - } else if (rtc->ops->set_mmss) { - time64_t secs64 = rtc_tm_to_time64(tm); - err = rtc->ops->set_mmss(rtc->dev.parent, secs64); - } else + else if (rtc->ops->set_mmss64) + err = rtc->ops->set_mmss64(rtc->dev.parent, + rtc_tm_to_time64(tm)); + else if (rtc->ops->set_mmss) + err = rtc->ops->set_mmss(rtc->dev.parent, + rtc_tm_to_time64(tm)); + else err = -EINVAL; pm_stay_awake(rtc->dev.parent); @@ -164,7 +164,8 @@ int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm) } EXPORT_SYMBOL_GPL(rtc_set_time); -static int rtc_read_alarm_internal(struct rtc_device *rtc, struct rtc_wkalrm *alarm) +static int rtc_read_alarm_internal(struct rtc_device *rtc, + struct rtc_wkalrm *alarm) { int err; @@ -172,11 +173,11 @@ static int rtc_read_alarm_internal(struct rtc_device *rtc, struct rtc_wkalrm *al if (err) return err; - if (rtc->ops == NULL) + if (!rtc->ops) { err = -ENODEV; - else if (!rtc->ops->read_alarm) + } else if (!rtc->ops->read_alarm) { err = -EINVAL; - else { + } else { alarm->enabled = 0; alarm->pending = 0; alarm->time.tm_sec = -1; @@ -204,7 +205,7 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) int first_time = 1; time64_t t_now, t_alm; enum { none, day, month, year } missing = none; - unsigned days; + unsigned int days; /* The lower level RTC driver may return -1 in some fields, * creating invalid alarm->time values, for reasons like: @@ -273,10 +274,10 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) return err; /* note that tm_sec is a "don't care" value here: */ - } while ( before.tm_min != now.tm_min - || before.tm_hour != now.tm_hour - || before.tm_mon != now.tm_mon - || before.tm_year != now.tm_year); + } while (before.tm_min != now.tm_min || + before.tm_hour != now.tm_hour || + before.tm_mon != now.tm_mon || + before.tm_year != now.tm_year); /* Fill in the missing alarm fields using the timestamp; we * know there's at least one since alarm->time is invalid. @@ -293,7 +294,7 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) alarm->time.tm_mday = now.tm_mday; missing = day; } - if ((unsigned)alarm->time.tm_mon >= 12) { + if ((unsigned int)alarm->time.tm_mon >= 12) { alarm->time.tm_mon = now.tm_mon; if (missing == none) missing = month; @@ -318,7 +319,6 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) goto done; switch (missing) { - /* 24 hour rollover ... if it's now 10am Monday, an alarm that * that will trigger at 5am will do so at 5am Tuesday, which * could also be in the next month or year. This is a common @@ -338,14 +338,14 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) case month: dev_dbg(&rtc->dev, "alarm rollover: %s\n", "month"); do { - if (alarm->time.tm_mon < 11) + if (alarm->time.tm_mon < 11) { alarm->time.tm_mon++; - else { + } else { alarm->time.tm_mon = 0; alarm->time.tm_year++; } days = rtc_month_days(alarm->time.tm_mon, - alarm->time.tm_year); + alarm->time.tm_year); } while (days < alarm->time.tm_mday); break; @@ -354,8 +354,8 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) dev_dbg(&rtc->dev, "alarm rollover: %s\n", "year"); do { alarm->time.tm_year++; - } while (!is_leap_year(alarm->time.tm_year + 1900) - && rtc_valid_tm(&alarm->time) != 0); + } while (!is_leap_year(alarm->time.tm_year + 1900) && + rtc_valid_tm(&alarm->time) != 0); break; default: @@ -366,7 +366,8 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) done: if (err) - dev_warn(&rtc->dev, "invalid alarm value: %ptR\n", &alarm->time); + dev_warn(&rtc->dev, "invalid alarm value: %ptR\n", + &alarm->time); return err; } @@ -378,11 +379,11 @@ int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) err = mutex_lock_interruptible(&rtc->ops_lock); if (err) return err; - if (rtc->ops == NULL) + if (!rtc->ops) { err = -ENODEV; - else if (!rtc->ops->read_alarm) + } else if (!rtc->ops->read_alarm) { err = -EINVAL; - else { + } else { memset(alarm, 0, sizeof(struct rtc_wkalrm)); alarm->enabled = rtc->aie_timer.enabled; alarm->time = rtc_ktime_to_tm(rtc->aie_timer.node.expires); @@ -491,7 +492,6 @@ int rtc_initialize_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) /* Alarm has to be enabled & in the future for us to enqueue it */ if (alarm->enabled && (rtc_tm_to_ktime(now) < rtc->aie_timer.node.expires)) { - rtc->aie_timer.enabled = 1; timerqueue_add(&rtc->timerqueue, &rtc->aie_timer.node); trace_rtc_timer_enqueue(&rtc->aie_timer); @@ -503,7 +503,9 @@ EXPORT_SYMBOL_GPL(rtc_initialize_alarm); int rtc_alarm_irq_enable(struct rtc_device *rtc, unsigned int enabled) { - int err = mutex_lock_interruptible(&rtc->ops_lock); + int err; + + err = mutex_lock_interruptible(&rtc->ops_lock); if (err) return err; @@ -532,7 +534,9 @@ EXPORT_SYMBOL_GPL(rtc_alarm_irq_enable); int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled) { - int err = mutex_lock_interruptible(&rtc->ops_lock); + int err; + + err = mutex_lock_interruptible(&rtc->ops_lock); if (err) return err; @@ -561,8 +565,9 @@ int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled) rtc->uie_rtctimer.node.expires = ktime_add(now, onesec); rtc->uie_rtctimer.period = ktime_set(1, 0); err = rtc_timer_enqueue(rtc, &rtc->uie_rtctimer); - } else + } else { rtc_timer_remove(rtc, &rtc->uie_rtctimer); + } out: mutex_unlock(&rtc->ops_lock); @@ -577,11 +582,9 @@ int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled) err = rtc_dev_update_irq_enable_emul(rtc, enabled); #endif return err; - } EXPORT_SYMBOL_GPL(rtc_update_irq_enable); - /** * rtc_handle_legacy_irq - AIE, UIE and PIE event hook * @rtc: pointer to the rtc device @@ -596,14 +599,13 @@ void rtc_handle_legacy_irq(struct rtc_device *rtc, int num, int mode) /* mark one irq of the appropriate mode */ spin_lock_irqsave(&rtc->irq_lock, flags); - rtc->irq_data = (rtc->irq_data + (num << 8)) | (RTC_IRQF|mode); + rtc->irq_data = (rtc->irq_data + (num << 8)) | (RTC_IRQF | mode); spin_unlock_irqrestore(&rtc->irq_lock, flags); wake_up_interruptible(&rtc->irq_queue); kill_fasync(&rtc->async_queue, SIGIO, POLL_IN); } - /** * rtc_aie_update_irq - AIE mode rtctimer hook * @rtc: pointer to the rtc_device @@ -615,7 +617,6 @@ void rtc_aie_update_irq(struct rtc_device *rtc) rtc_handle_legacy_irq(rtc, 1, RTC_AF); } - /** * rtc_uie_update_irq - UIE mode rtctimer hook * @rtc: pointer to the rtc_device @@ -627,7 +628,6 @@ void rtc_uie_update_irq(struct rtc_device *rtc) rtc_handle_legacy_irq(rtc, 1, RTC_UF); } - /** * rtc_pie_update_irq - PIE mode hrtimer hook * @timer: pointer to the pie mode hrtimer @@ -641,6 +641,7 @@ enum hrtimer_restart rtc_pie_update_irq(struct hrtimer *timer) struct rtc_device *rtc; ktime_t period; int count; + rtc = container_of(timer, struct rtc_device, pie_timer); period = NSEC_PER_SEC / rtc->irq_freq; @@ -659,7 +660,7 @@ enum hrtimer_restart rtc_pie_update_irq(struct hrtimer *timer) * Context: any */ void rtc_update_irq(struct rtc_device *rtc, - unsigned long num, unsigned long events) + unsigned long num, unsigned long events) { if (IS_ERR_OR_NULL(rtc)) return; @@ -808,6 +809,7 @@ static int rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer) if (!next || ktime_before(timer->node.expires, next->expires)) { struct rtc_wkalrm alarm; int err; + alarm.time = rtc_ktime_to_tm(timer->node.expires); alarm.enabled = 1; err = __rtc_set_alarm(rtc, &alarm); @@ -848,12 +850,14 @@ static void rtc_alarm_disable(struct rtc_device *rtc) static void rtc_timer_remove(struct rtc_device *rtc, struct rtc_timer *timer) { struct timerqueue_node *next = timerqueue_getnext(&rtc->timerqueue); + timerqueue_del(&rtc->timerqueue, &timer->node); trace_rtc_timer_dequeue(timer); timer->enabled = 0; if (next == &timer->node) { struct rtc_wkalrm alarm; int err; + next = timerqueue_getnext(&rtc->timerqueue); if (!next) { rtc_alarm_disable(rtc); @@ -926,9 +930,9 @@ void rtc_timer_do_work(struct work_struct *work) alarm.enabled = 1; reprogram: err = __rtc_set_alarm(rtc, &alarm); - if (err == -ETIME) + if (err == -ETIME) { goto again; - else if (err) { + } else if (err) { if (retry-- > 0) goto reprogram; @@ -939,14 +943,14 @@ void rtc_timer_do_work(struct work_struct *work) dev_err(&rtc->dev, "__rtc_set_alarm: err=%d\n", err); goto again; } - } else + } else { rtc_alarm_disable(rtc); + } pm_relax(rtc->dev.parent); mutex_unlock(&rtc->ops_lock); } - /* rtc_timer_init - Initializes an rtc_timer * @timer: timer to be intiialized * @f: function pointer to be called when timer fires @@ -972,9 +976,10 @@ void rtc_timer_init(struct rtc_timer *timer, void (*f)(struct rtc_device *r), * Kernel interface to set an rtc_timer */ int rtc_timer_start(struct rtc_device *rtc, struct rtc_timer *timer, - ktime_t expires, ktime_t period) + ktime_t expires, ktime_t period) { int ret = 0; + mutex_lock(&rtc->ops_lock); if (timer->enabled) rtc_timer_remove(rtc, timer); diff --git a/drivers/rtc/lib.c b/drivers/rtc/lib.c index 3d0dc70ff7d8..e36c233455ee 100644 --- a/drivers/rtc/lib.c +++ b/drivers/rtc/lib.c @@ -22,7 +22,7 @@ static const unsigned short rtc_ydays[2][13] = { { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 } }; -#define LEAPS_THRU_END_OF(y) ((y)/4 - (y)/100 + (y)/400) +#define LEAPS_THRU_END_OF(y) ((y) / 4 - (y) / 100 + (y) / 400) /* * The number of days in the month. @@ -38,11 +38,10 @@ EXPORT_SYMBOL(rtc_month_days); */ int rtc_year_days(unsigned int day, unsigned int month, unsigned int year) { - return rtc_ydays[is_leap_year(year)][month] + day-1; + return rtc_ydays[is_leap_year(year)][month] + day - 1; } EXPORT_SYMBOL(rtc_year_days); - /* * rtc_time64_to_tm - Converts time64_t to rtc_time. * Convert seconds since 01-01-1970 00:00:00 to Gregorian date. @@ -94,13 +93,14 @@ EXPORT_SYMBOL(rtc_time64_to_tm); */ int rtc_valid_tm(struct rtc_time *tm) { - if (tm->tm_year < 70 - || ((unsigned)tm->tm_mon) >= 12 - || tm->tm_mday < 1 - || tm->tm_mday > rtc_month_days(tm->tm_mon, ((unsigned)tm->tm_year + 1900)) - || ((unsigned)tm->tm_hour) >= 24 - || ((unsigned)tm->tm_min) >= 60 - || ((unsigned)tm->tm_sec) >= 60) + if (tm->tm_year < 70 || + ((unsigned int)tm->tm_mon) >= 12 || + tm->tm_mday < 1 || + tm->tm_mday > rtc_month_days(tm->tm_mon, + ((unsigned int)tm->tm_year + 1900)) || + ((unsigned int)tm->tm_hour) >= 24 || + ((unsigned int)tm->tm_min) >= 60 || + ((unsigned int)tm->tm_sec) >= 60) return -EINVAL; return 0; @@ -113,7 +113,7 @@ EXPORT_SYMBOL(rtc_valid_tm); */ time64_t rtc_tm_to_time64(struct rtc_time *tm) { - return mktime64(((unsigned)tm->tm_year + 1900), tm->tm_mon + 1, + return mktime64(((unsigned int)tm->tm_year + 1900), tm->tm_mon + 1, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec); } EXPORT_SYMBOL(rtc_tm_to_time64); diff --git a/drivers/rtc/nvmem.c b/drivers/rtc/nvmem.c index 7481a4cd2753..4312096c7738 100644 --- a/drivers/rtc/nvmem.c +++ b/drivers/rtc/nvmem.c @@ -43,7 +43,7 @@ static int rtc_nvram_register(struct rtc_device *rtc, { int err; - rtc->nvram = kzalloc(sizeof(struct bin_attribute), GFP_KERNEL); + rtc->nvram = kzalloc(sizeof(*rtc->nvram), GFP_KERNEL); if (!rtc->nvram) return -ENOMEM; diff --git a/drivers/rtc/proc.c b/drivers/rtc/proc.c index a741c4d8f5a5..73344598fc1b 100644 --- a/drivers/rtc/proc.c +++ b/drivers/rtc/proc.c @@ -57,17 +57,17 @@ static int rtc_proc_show(struct seq_file *seq, void *offset) seq_printf(seq, "alrm_time\t: %ptRt\n", &alrm.time); seq_printf(seq, "alrm_date\t: %ptRd\n", &alrm.time); seq_printf(seq, "alarm_IRQ\t: %s\n", - alrm.enabled ? "yes" : "no"); + alrm.enabled ? "yes" : "no"); seq_printf(seq, "alrm_pending\t: %s\n", - alrm.pending ? "yes" : "no"); + alrm.pending ? "yes" : "no"); seq_printf(seq, "update IRQ enabled\t: %s\n", - (rtc->uie_rtctimer.enabled) ? "yes" : "no"); + (rtc->uie_rtctimer.enabled) ? "yes" : "no"); seq_printf(seq, "periodic IRQ enabled\t: %s\n", - (rtc->pie_enabled) ? "yes" : "no"); + (rtc->pie_enabled) ? "yes" : "no"); seq_printf(seq, "periodic IRQ frequency\t: %d\n", - rtc->irq_freq); + rtc->irq_freq); seq_printf(seq, "max user IRQ frequency\t: %d\n", - rtc->max_user_freq); + rtc->max_user_freq); } seq_printf(seq, "24hr\t\t: yes\n"); @@ -82,7 +82,7 @@ void rtc_proc_add_device(struct rtc_device *rtc) { if (is_rtc_hctosys(rtc)) proc_create_single_data("driver/rtc", 0, NULL, rtc_proc_show, - rtc); + rtc); } void rtc_proc_del_device(struct rtc_device *rtc) diff --git a/drivers/rtc/sysfs.c b/drivers/rtc/sysfs.c index 0d3dac557df5..be3531e7f868 100644 --- a/drivers/rtc/sysfs.c +++ b/drivers/rtc/sysfs.c @@ -11,7 +11,6 @@ #include "rtc-core.h" - /* device attributes */ /* @@ -83,7 +82,7 @@ max_user_freq_show(struct device *dev, struct device_attribute *attr, char *buf) static ssize_t max_user_freq_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t n) + const char *buf, size_t n) { struct rtc_device *rtc = to_rtc_device(dev); unsigned long val; @@ -113,12 +112,11 @@ hctosys_show(struct device *dev, struct device_attribute *attr, char *buf) { #ifdef CONFIG_RTC_HCTOSYS_DEVICE if (rtc_hctosys_ret == 0 && - strcmp(dev_name(&to_rtc_device(dev)->dev), - CONFIG_RTC_HCTOSYS_DEVICE) == 0) + strcmp(dev_name(&to_rtc_device(dev)->dev), + CONFIG_RTC_HCTOSYS_DEVICE) == 0) return sprintf(buf, "1\n"); - else #endif - return sprintf(buf, "0\n"); + return sprintf(buf, "0\n"); } static DEVICE_ATTR_RO(hctosys); @@ -172,15 +170,15 @@ wakealarm_store(struct device *dev, struct device_attribute *attr, if (*buf_ptr == '=') { buf_ptr++; push = 1; - } else + } else { adjust = 1; + } } retval = kstrtos64(buf_ptr, 0, &alarm); if (retval) return retval; - if (adjust) { + if (adjust) alarm += now; - } if (alarm > now || push) { /* Avoid accidentally clobbering active alarms; we can't * entirely prevent that here, without even the minimal