Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (29 commits)
  powerpc/83xx: Move mcu_mpc8349emitx driver out of drivers/i2c/chips/
  powerpc/83xx: Make serial ports work on MPC8315E-RDB w/ FSL U-Boots
  powerpc/e500mc: Doorbells need to be taken w/exceptions disabled
  powerpc: Enable PS3 options and QPACE in ppc64_defconfig
  powerpc/powermac: Fix occasional SMP boot failure
  powerpc/cacheinfo: Rename cache_dir per-cpu variable
  hvc_console: Use kzalloc() instead of kmalloc() + memset()
  hvc_console: Do not set low_latency when using interrupts
  hvc_console: Call free_irq() only if request_irq() was successful
  hvc_console: Change an mb() to smp_mb() and add some comments
  powerpc: Cleanup from l64 to ll64 change: drivers/net
  powerpc: Cleanup from l64 to ll64 change: drivers/char
  powerpc: Cleanup from l64 to ll64 change: arch code
  powerpc: Change u64/s64 to a long long integer type
  powerpc/kexec: Check crash_base for relocatable kernel
  powerpc: Make dummy section a valid note header
  Xilinx: SPI: updated driver for device tree
  drivers/of: Add the of_find_i2c_device_by_node function.
  powerpc/xsysace: add compatible string for non-ipcore instance
  powerpc/mpc52xx: remove dead code from GPIO driver
  ...

3 files changed, 10 insertions, 8 deletions

diff --git a/drivers/char/bsr.c b/drivers/char/bsr.c
index 977dfb1096a0..f6094ae0ef33 100644
--- a/drivers/char/bsr.c
+++ b/drivers/char/bsr.c
@@ -103,7 +103,7 @@ static ssize_t
 bsr_len_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
         struct bsr_dev *bsr_dev = dev_get_drvdata(dev);
-        return sprintf(buf, "%lu\n", bsr_dev->bsr_len);
+        return sprintf(buf, "%llu\n", bsr_dev->bsr_len);
 }
 
 static struct device_attribute bsr_dev_attrs[] = {
diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index 5a8a4c28c867..09676b4e5d89 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -318,7 +318,8 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
         } /* else count == 0 */
 
         tty->driver_data = hp;
-        tty->low_latency = 1; /* Makes flushes to ldisc synchronous. */
+        if (!hp->irq_requested)
+                tty->low_latency = 1; /* Makes flushes to ldisc synchronous. */
 
         hp->tty = tty;
 
@@ -764,13 +765,11 @@ struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int data,
                         return ERR_PTR(err);
         }
 
-        hp = kmalloc(ALIGN(sizeof(*hp), sizeof(long)) + outbuf_size,
+        hp = kzalloc(ALIGN(sizeof(*hp), sizeof(long)) + outbuf_size,
                         GFP_KERNEL);
         if (!hp)
                 return ERR_PTR(-ENOMEM);
 
-        memset(hp, 0x00, sizeof(*hp));
-
         hp->vtermno = vtermno;
         hp->data = data;
         hp->ops = ops;
@@ -876,8 +875,11 @@ static int hvc_init(void)
                 goto stop_thread;
         }
 
-        /* FIXME: This mb() seems completely random.  Remove it. */
-        mb();
+        /*
+         * Make sure tty is fully registered before allowing it to be
+         * found by hvc_console_device.
+         */
+        smp_mb();
         hvc_driver = drv;
         return 0;
 
diff --git a/drivers/char/hvc_irq.c b/drivers/char/hvc_irq.c
index d09e5688d449..2623e177e8d6 100644
--- a/drivers/char/hvc_irq.c
+++ b/drivers/char/hvc_irq.c
@@ -37,7 +37,7 @@ int notifier_add_irq(struct hvc_struct *hp, int irq)
 
 void notifier_del_irq(struct hvc_struct *hp, int irq)
 {
-        if (!irq)
+        if (!hp->irq_requested)
                 return;
         free_irq(irq, hp);
         hp->irq_requested = 0;