Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

* 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (73 commits)
  arm: fix up some samsung merge sysdev conversion problems
  firmware: Fix an oops on reading fw_priv->fw in sysfs loading file
  Drivers:hv: Fix a bug in vmbus_driver_unregister()
  driver core: remove __must_check from device_create_file
  debugfs: add missing #ifdef HAS_IOMEM
  arm: time.h: remove device.h #include
  driver-core: remove sysdev.h usage.
  clockevents: remove sysdev.h
  arm: convert sysdev_class to a regular subsystem
  arm: leds: convert sysdev_class to a regular subsystem
  kobject: remove kset_find_obj_hinted()
  m86k: gpio - convert sysdev_class to a regular subsystem
  mips: txx9_sram - convert sysdev_class to a regular subsystem
  mips: 7segled - convert sysdev_class to a regular subsystem
  sh: dma - convert sysdev_class to a regular subsystem
  sh: intc - convert sysdev_class to a regular subsystem
  power: suspend - convert sysdev_class to a regular subsystem
  power: qe_ic - convert sysdev_class to a regular subsystem
  power: cmm - convert sysdev_class to a regular subsystem
  s390: time - convert sysdev_class to a regular subsystem
  ...

Fix up conflicts with 'struct sysdev' removal from various platform
drivers that got changed:
 - arch/arm/mach-exynos/cpu.c
 - arch/arm/mach-exynos/irq-eint.c
 - arch/arm/mach-s3c64xx/common.c
 - arch/arm/mach-s3c64xx/cpu.c
 - arch/arm/mach-s5p64x0/cpu.c
 - arch/arm/mach-s5pv210/common.c
 - arch/arm/plat-samsung/include/plat/cpu.h
 - arch/powerpc/kernel/sysfs.c
and fix up cpu_is_hotpluggable() as per Greg in include/linux/cpu.h

1 files changed, 31 insertions, 5 deletions

diff --git a/drivers/w1/slaves/w1_therm.c b/drivers/w1/slaves/w1_therm.c
index a1ef9b5b38cf..ff29ae747ee8 100644
--- a/drivers/w1/slaves/w1_therm.c
+++ b/drivers/w1/slaves/w1_therm.c
@@ -175,11 +175,13 @@ static ssize_t w1_therm_read(struct device *device,
 {
         struct w1_slave *sl = dev_to_w1_slave(device);
         struct w1_master *dev = sl->master;
-        u8 rom[9], crc, verdict;
+        u8 rom[9], crc, verdict, external_power;
         int i, max_trying = 10;
         ssize_t c = PAGE_SIZE;
 
-        mutex_lock(&dev->mutex);
+        i = mutex_lock_interruptible(&dev->mutex);
+        if (i != 0)
+                return i;
 
         memset(rom, 0, sizeof(rom));
 
@@ -190,13 +192,37 @@ static ssize_t w1_therm_read(struct device *device,
                 if (!w1_reset_select_slave(sl)) {
                         int count = 0;
                         unsigned int tm = 750;
+                        unsigned long sleep_rem;
+
+                        w1_write_8(dev, W1_READ_PSUPPLY);
+                        external_power = w1_read_8(dev);
+
+                        if (w1_reset_select_slave(sl))
+                                continue;
 
                         /* 750ms strong pullup (or delay) after the convert */
-                        if (w1_strong_pullup)
+                        if (!external_power && w1_strong_pullup)
                                 w1_next_pullup(dev, tm);
+
                         w1_write_8(dev, W1_CONVERT_TEMP);
-                        if (!w1_strong_pullup)
-                                msleep(tm);
+
+                        if (external_power) {
+                                mutex_unlock(&dev->mutex);
+
+                                sleep_rem = msleep_interruptible(tm);
+                                if (sleep_rem != 0)
+                                        return -EINTR;
+
+                                i = mutex_lock_interruptible(&dev->mutex);
+                                if (i != 0)
+                                        return i;
+                        } else if (!w1_strong_pullup) {
+                                sleep_rem = msleep_interruptible(tm);
+                                if (sleep_rem != 0) {
+                                        mutex_unlock(&dev->mutex);
+                                        return -EINTR;
+                                }
+                        }
 
                         if (!w1_reset_select_slave(sl)) {