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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-04 04:12:13 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-04 04:12:13 +0400 |
commit | 7f0ef0267e20d62d45d527911a993b1e998f4968 (patch) | |
tree | de51abc7da5903f59d83e23937f22420164c9477 /drivers/rtc/rtc-cmos.c | |
parent | 862f0012549110d6f2586bf54b52ed4540cbff3a (diff) | |
parent | 9307c29524502c21f0e8a6d96d850b2f5bc0bd9a (diff) | |
download | linux-7f0ef0267e20d62d45d527911a993b1e998f4968.tar.xz |
Merge branch 'akpm' (updates from Andrew Morton)
Merge first patch-bomb from Andrew Morton:
- various misc bits
- I'm been patchmonkeying ocfs2 for a while, as Joel and Mark have been
distracted. There has been quite a bit of activity.
- About half the MM queue
- Some backlight bits
- Various lib/ updates
- checkpatch updates
- zillions more little rtc patches
- ptrace
- signals
- exec
- procfs
- rapidio
- nbd
- aoe
- pps
- memstick
- tools/testing/selftests updates
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (445 commits)
tools/testing/selftests: don't assume the x bit is set on scripts
selftests: add .gitignore for kcmp
selftests: fix clean target in kcmp Makefile
selftests: add .gitignore for vm
selftests: add hugetlbfstest
self-test: fix make clean
selftests: exit 1 on failure
kernel/resource.c: remove the unneeded assignment in function __find_resource
aio: fix wrong comment in aio_complete()
drivers/w1/slaves/w1_ds2408.c: add magic sequence to disable P0 test mode
drivers/memstick/host/r592.c: convert to module_pci_driver
drivers/memstick/host/jmb38x_ms: convert to module_pci_driver
pps-gpio: add device-tree binding and support
drivers/pps/clients/pps-gpio.c: convert to module_platform_driver
drivers/pps/clients/pps-gpio.c: convert to devm_* helpers
drivers/parport/share.c: use kzalloc
Documentation/accounting/getdelays.c: avoid strncpy in accounting tool
aoe: update internal version number to v83
aoe: update copyright date
aoe: perform I/O completions in parallel
...
Diffstat (limited to 'drivers/rtc/rtc-cmos.c')
-rw-r--r-- | drivers/rtc/rtc-cmos.c | 41 |
1 files changed, 25 insertions, 16 deletions
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c index f1cb706445c7..be06d7150de5 100644 --- a/drivers/rtc/rtc-cmos.c +++ b/drivers/rtc/rtc-cmos.c @@ -326,7 +326,7 @@ static void cmos_irq_disable(struct cmos_rtc *cmos, unsigned char mask) static int cmos_set_alarm(struct device *dev, struct rtc_wkalrm *t) { struct cmos_rtc *cmos = dev_get_drvdata(dev); - unsigned char mon, mday, hrs, min, sec, rtc_control; + unsigned char mon, mday, hrs, min, sec, rtc_control; if (!is_valid_irq(cmos->irq)) return -EIO; @@ -556,17 +556,24 @@ static irqreturn_t cmos_interrupt(int irq, void *p) rtc_control = CMOS_READ(RTC_CONTROL); if (is_hpet_enabled()) irqstat = (unsigned long)irq & 0xF0; - irqstat &= (rtc_control & RTC_IRQMASK) | RTC_IRQF; + + /* If we were suspended, RTC_CONTROL may not be accurate since the + * bios may have cleared it. + */ + if (!cmos_rtc.suspend_ctrl) + irqstat &= (rtc_control & RTC_IRQMASK) | RTC_IRQF; + else + irqstat &= (cmos_rtc.suspend_ctrl & RTC_IRQMASK) | RTC_IRQF; /* All Linux RTC alarms should be treated as if they were oneshot. * Similar code may be needed in system wakeup paths, in case the * alarm woke the system. */ if (irqstat & RTC_AIE) { + cmos_rtc.suspend_ctrl &= ~RTC_AIE; rtc_control &= ~RTC_AIE; CMOS_WRITE(rtc_control, RTC_CONTROL); hpet_mask_rtc_irq_bit(RTC_AIE); - CMOS_READ(RTC_INTR_FLAGS); } spin_unlock(&rtc_lock); @@ -691,7 +698,7 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq) /* FIXME: * <asm-generic/rtc.h> doesn't know 12-hour mode either. */ - if (is_valid_irq(rtc_irq) && !(rtc_control & RTC_24H)) { + if (is_valid_irq(rtc_irq) && !(rtc_control & RTC_24H)) { dev_warn(dev, "only 24-hr supported\n"); retval = -ENXIO; goto cleanup1; @@ -839,21 +846,23 @@ static inline int cmos_poweroff(struct device *dev) static int cmos_resume(struct device *dev) { struct cmos_rtc *cmos = dev_get_drvdata(dev); - unsigned char tmp = cmos->suspend_ctrl; + unsigned char tmp; + + if (cmos->enabled_wake) { + if (cmos->wake_off) + cmos->wake_off(dev); + else + disable_irq_wake(cmos->irq); + cmos->enabled_wake = 0; + } + spin_lock_irq(&rtc_lock); + tmp = cmos->suspend_ctrl; + cmos->suspend_ctrl = 0; /* re-enable any irqs previously active */ if (tmp & RTC_IRQMASK) { unsigned char mask; - if (cmos->enabled_wake) { - if (cmos->wake_off) - cmos->wake_off(dev); - else - disable_irq_wake(cmos->irq); - cmos->enabled_wake = 0; - } - - spin_lock_irq(&rtc_lock); if (device_may_wakeup(dev)) hpet_rtc_timer_init(); @@ -873,8 +882,8 @@ static int cmos_resume(struct device *dev) tmp &= ~RTC_AIE; hpet_mask_rtc_irq_bit(RTC_AIE); } while (mask & RTC_AIE); - spin_unlock_irq(&rtc_lock); } + spin_unlock_irq(&rtc_lock); dev_dbg(dev, "resume, ctrl %02x\n", tmp); @@ -991,7 +1000,7 @@ static int cmos_pnp_probe(struct pnp_dev *pnp, const struct pnp_device_id *id) { cmos_wake_setup(&pnp->dev); - if (pnp_port_start(pnp,0) == 0x70 && !pnp_irq_valid(pnp,0)) + if (pnp_port_start(pnp, 0) == 0x70 && !pnp_irq_valid(pnp, 0)) /* Some machines contain a PNP entry for the RTC, but * don't define the IRQ. It should always be safe to * hardcode it in these cases |