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Diffstat (limited to 'kernel/module.c')
-rw-r--r--kernel/module.c21
1 files changed, 4 insertions, 17 deletions
diff --git a/kernel/module.c b/kernel/module.c
index b049939177f6..cab4bce49c23 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2431,10 +2431,10 @@ static void kmemleak_load_module(const struct module *mod,
2431 kmemleak_scan_area(mod, sizeof(struct module), GFP_KERNEL); 2431 kmemleak_scan_area(mod, sizeof(struct module), GFP_KERNEL);
2432 2432
2433 for (i = 1; i < info->hdr->e_shnum; i++) { 2433 for (i = 1; i < info->hdr->e_shnum; i++) {
2434 const char *name = info->secstrings + info->sechdrs[i].sh_name; 2434 /* Scan all writable sections that's not executable */
2435 if (!(info->sechdrs[i].sh_flags & SHF_ALLOC)) 2435 if (!(info->sechdrs[i].sh_flags & SHF_ALLOC) ||
2436 continue; 2436 !(info->sechdrs[i].sh_flags & SHF_WRITE) ||
2437 if (!strstarts(name, ".data") && !strstarts(name, ".bss")) 2437 (info->sechdrs[i].sh_flags & SHF_EXECINSTR))
2438 continue; 2438 continue;
2439 2439
2440 kmemleak_scan_area((void *)info->sechdrs[i].sh_addr, 2440 kmemleak_scan_area((void *)info->sechdrs[i].sh_addr,
@@ -2769,24 +2769,11 @@ static void find_module_sections(struct module *mod, struct load_info *info)
2769 mod->trace_events = section_objs(info, "_ftrace_events", 2769 mod->trace_events = section_objs(info, "_ftrace_events",
2770 sizeof(*mod->trace_events), 2770 sizeof(*mod->trace_events),
2771 &mod->num_trace_events); 2771 &mod->num_trace_events);
2772 /*
2773 * This section contains pointers to allocated objects in the trace
2774 * code and not scanning it leads to false positives.
2775 */
2776 kmemleak_scan_area(mod->trace_events, sizeof(*mod->trace_events) *
2777 mod->num_trace_events, GFP_KERNEL);
2778#endif 2772#endif
2779#ifdef CONFIG_TRACING 2773#ifdef CONFIG_TRACING
2780 mod->trace_bprintk_fmt_start = section_objs(info, "__trace_printk_fmt", 2774 mod->trace_bprintk_fmt_start = section_objs(info, "__trace_printk_fmt",
2781 sizeof(*mod->trace_bprintk_fmt_start), 2775 sizeof(*mod->trace_bprintk_fmt_start),
2782 &mod->num_trace_bprintk_fmt); 2776 &mod->num_trace_bprintk_fmt);
2783 /*
2784 * This section contains pointers to allocated objects in the trace
2785 * code and not scanning it leads to false positives.
2786 */
2787 kmemleak_scan_area(mod->trace_bprintk_fmt_start,
2788 sizeof(*mod->trace_bprintk_fmt_start) *
2789 mod->num_trace_bprintk_fmt, GFP_KERNEL);
2790#endif 2777#endif
2791#ifdef CONFIG_FTRACE_MCOUNT_RECORD 2778#ifdef CONFIG_FTRACE_MCOUNT_RECORD
2792 /* sechdrs[0].sh_size is always zero */ 2779 /* sechdrs[0].sh_size is always zero */
ss="hl kwd">readl(ioaddr + RTC_ALARM_DATE_REG_OFFS); second = rtc_time & 0x7f; minute = (rtc_time >> RTC_MINUTES_OFFS) & 0x7f; hour = (rtc_time >> RTC_HOURS_OFFS) & 0x3f; /* assume 24 hours mode */ wday = (rtc_time >> RTC_WDAY_OFFS) & 0x7; day = rtc_date & 0x3f; month = (rtc_date >> RTC_MONTH_OFFS) & 0x3f; year = (rtc_date >> RTC_YEAR_OFFS) & 0xff; alm->time.tm_sec = bcd2bin(second); alm->time.tm_min = bcd2bin(minute); alm->time.tm_hour = bcd2bin(hour); alm->time.tm_mday = bcd2bin(day); alm->time.tm_wday = bcd2bin(wday); alm->time.tm_mon = bcd2bin(month) - 1; /* hw counts from year 2000, but tm_year is relative to 1900 */ alm->time.tm_year = bcd2bin(year) + 100; if (rtc_valid_tm(&alm->time) < 0) { dev_err(dev, "retrieved alarm date/time is not valid.\n"); rtc_time_to_tm(0, &alm->time); } alm->enabled = !!readl(ioaddr + RTC_ALARM_INTERRUPT_MASK_REG_OFFS); return 0; } static int mv_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) { struct rtc_plat_data *pdata = dev_get_drvdata(dev); void __iomem *ioaddr = pdata->ioaddr; u32 rtc_reg = 0; if (alm->time.tm_sec >= 0) rtc_reg |= (RTC_ALARM_VALID | bin2bcd(alm->time.tm_sec)) << RTC_SECONDS_OFFS; if (alm->time.tm_min >= 0) rtc_reg |= (RTC_ALARM_VALID | bin2bcd(alm->time.tm_min)) << RTC_MINUTES_OFFS; if (alm->time.tm_hour >= 0) rtc_reg |= (RTC_ALARM_VALID | bin2bcd(alm->time.tm_hour)) << RTC_HOURS_OFFS; writel(rtc_reg, ioaddr + RTC_ALARM_TIME_REG_OFFS); if (alm->time.tm_mday >= 0) rtc_reg = (RTC_ALARM_VALID | bin2bcd(alm->time.tm_mday)) << RTC_MDAY_OFFS; else rtc_reg = 0; if (alm->time.tm_mon >= 0) rtc_reg |= (RTC_ALARM_VALID | bin2bcd(alm->time.tm_mon + 1)) << RTC_MONTH_OFFS; if (alm->time.tm_year >= 0) rtc_reg |= (RTC_ALARM_VALID | bin2bcd(alm->time.tm_year % 100)) << RTC_YEAR_OFFS; writel(rtc_reg, ioaddr + RTC_ALARM_DATE_REG_OFFS); writel(0, ioaddr + RTC_ALARM_INTERRUPT_CASUE_REG_OFFS); writel(alm->enabled ? 1 : 0, ioaddr + RTC_ALARM_INTERRUPT_MASK_REG_OFFS); return 0; } static int mv_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) { struct platform_device *pdev = to_platform_device(dev); struct rtc_plat_data *pdata = platform_get_drvdata(pdev); void __iomem *ioaddr = pdata->ioaddr; if (pdata->irq < 0) return -EINVAL; /* fall back into rtc-dev's emulation */ if (enabled) writel(1, ioaddr + RTC_ALARM_INTERRUPT_MASK_REG_OFFS); else writel(0, ioaddr + RTC_ALARM_INTERRUPT_MASK_REG_OFFS); return 0; } static irqreturn_t mv_rtc_interrupt(int irq, void *data) { struct rtc_plat_data *pdata = data; void __iomem *ioaddr = pdata->ioaddr; /* alarm irq? */ if (!readl(ioaddr + RTC_ALARM_INTERRUPT_CASUE_REG_OFFS)) return IRQ_NONE; /* clear interrupt */ writel(0, ioaddr + RTC_ALARM_INTERRUPT_CASUE_REG_OFFS); rtc_update_irq(pdata->rtc, 1, RTC_IRQF | RTC_AF); return IRQ_HANDLED; } static const struct rtc_class_ops mv_rtc_ops = { .read_time = mv_rtc_read_time, .set_time = mv_rtc_set_time, }; static const struct rtc_class_ops mv_rtc_alarm_ops = { .read_time = mv_rtc_read_time, .set_time = mv_rtc_set_time, .read_alarm = mv_rtc_read_alarm, .set_alarm = mv_rtc_set_alarm, .alarm_irq_enable = mv_rtc_alarm_irq_enable, }; static int __devinit mv_rtc_probe(struct platform_device *pdev) { struct resource *res; struct rtc_plat_data *pdata; resource_size_t size; u32 rtc_time; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) return -ENODEV; pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) return -ENOMEM; size = resource_size(res); if (!devm_request_mem_region(&pdev->dev, res->start, size, pdev->name)) return -EBUSY; pdata->ioaddr = devm_ioremap(&pdev->dev, res->start, size); if (!pdata->ioaddr) return -ENOMEM; /* make sure the 24 hours mode is enabled */ rtc_time = readl(pdata->ioaddr + RTC_TIME_REG_OFFS); if (rtc_time & RTC_HOURS_12H_MODE) { dev_err(&pdev->dev, "24 Hours mode not supported.\n"); return -EINVAL; } /* make sure it is actually functional */ if (rtc_time == 0x01000000) { ssleep(1); rtc_time = readl(pdata->ioaddr + RTC_TIME_REG_OFFS); if (rtc_time == 0x01000000) { dev_err(&pdev->dev, "internal RTC not ticking\n"); return -ENODEV; } } pdata->irq = platform_get_irq(pdev, 0); platform_set_drvdata(pdev, pdata); if (pdata->irq >= 0) { device_init_wakeup(&pdev->dev, 1); pdata->rtc = rtc_device_register(pdev->name, &pdev->dev, &mv_rtc_alarm_ops, THIS_MODULE); } else pdata->rtc = rtc_device_register(pdev->name, &pdev->dev, &mv_rtc_ops, THIS_MODULE); if (IS_ERR(pdata->rtc)) return PTR_ERR(pdata->rtc); if (pdata->irq >= 0) { writel(0, pdata->ioaddr + RTC_ALARM_INTERRUPT_MASK_REG_OFFS); if (devm_request_irq(&pdev->dev, pdata->irq, mv_rtc_interrupt, IRQF_DISABLED | IRQF_SHARED, pdev->name, pdata) < 0) { dev_warn(&pdev->dev, "interrupt not available.\n"); pdata->irq = -1; } } return 0; } static int __exit mv_rtc_remove(struct platform_device *pdev) { struct rtc_plat_data *pdata = platform_get_drvdata(pdev); if (pdata->irq >= 0) device_init_wakeup(&pdev->dev, 0); rtc_device_unregister(pdata->rtc); return 0; } static struct platform_driver mv_rtc_driver = { .remove = __exit_p(mv_rtc_remove), .driver = { .name = "rtc-mv", .owner = THIS_MODULE, }, }; static __init int mv_init(void) { return platform_driver_probe(&mv_rtc_driver, mv_rtc_probe); } static __exit void mv_exit(void) { platform_driver_unregister(&mv_rtc_driver); } module_init(mv_init); module_exit(mv_exit); MODULE_AUTHOR("Saeed Bishara <saeed@marvell.com>"); MODULE_DESCRIPTION("Marvell RTC driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:rtc-mv");