Merge git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

* git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (53 commits)
  powerpc: Support for relocatable kdump kernel
  powerpc: Don't use a 16G page if beyond mem= limits
  powerpc: Add del_node() for early boot code to prune inapplicable devices.
  powerpc: Further compile fixup for STRICT_MM_TYPECHECKS
  powerpc: Remove empty #else from signal_64.c
  powerpc: Move memory size print into common show_cpuinfo for 32-bit
  hvc_console: Remove __devexit annotation of hvc_remove()
  hvc_console: Add support for tty window resizing
  hvc_console: Fix loop if put_char() returns 0
  hvc_console: Add tty driver flag TTY_DRIVER_RESET_TERMIOS
  hvc_console: Add a hangup notifier for backends
  powerpc/83xx: Add DS1339 RTC support for MPC8349E-mITX boards .dts
  powerpc/83xx: Add support for MCU microcontroller in .dts files
  powerpc/85xx: Move mpc8572ds.dts to address-cells/size-cells = <2>
  of/spi: Support specifying chip select as active high via device tree
  powerpc: Remove device_type = "board_control" properties in .dts files
  i2c-cpm: Suppress autoprobing for devices
  powerpc/85xx: Fix mpc8536ds dma interrupt numbers
  powerpc/85xx: Enable enhanced functions for 8536 TSEC
  powerpc: Delete unused prom_strtoul and prom_memparse
  ...

16 files changed, 185 insertions, 53 deletions

diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index bf70450a49cc..5b819b12675a 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -161,7 +161,7 @@ static void hvc_console_print(struct console *co, const char *b,
                         }
                 } else {
                         r = cons_ops[index]->put_chars(vtermnos[index], c, i);
-                        if (r < 0) {
+                        if (r <= 0) {
                                 /* throw away chars on error */
                                 i = 0;
                         } else if (r > 0) {
@@ -374,6 +374,9 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
                 if (hp->ops->notifier_del)
                         hp->ops->notifier_del(hp, hp->data);
 
+                /* cancel pending tty resize work */
+                cancel_work_sync(&hp->tty_resize);
+
                 /*
                  * Chain calls chars_in_buffer() and returns immediately if
                  * there is no buffered data otherwise sleeps on a wait queue
@@ -399,6 +402,9 @@ static void hvc_hangup(struct tty_struct *tty)
         if (!hp)
                 return;
 
+        /* cancel pending tty resize work */
+        cancel_work_sync(&hp->tty_resize);
+
         spin_lock_irqsave(&hp->lock, flags);
 
         /*
@@ -418,8 +424,8 @@ static void hvc_hangup(struct tty_struct *tty)
 
         spin_unlock_irqrestore(&hp->lock, flags);
 
-        if (hp->ops->notifier_del)
-                        hp->ops->notifier_del(hp, hp->data);
+        if (hp->ops->notifier_hangup)
+                        hp->ops->notifier_hangup(hp, hp->data);
 
         while(temp_open_count) {
                 --temp_open_count;
@@ -431,7 +437,7 @@ static void hvc_hangup(struct tty_struct *tty)
  * Push buffered characters whether they were just recently buffered or waiting
  * on a blocked hypervisor.  Call this function with hp->lock held.
  */
-static void hvc_push(struct hvc_struct *hp)
+static int hvc_push(struct hvc_struct *hp)
 {
         int n;
 
@@ -439,7 +445,7 @@ static void hvc_push(struct hvc_struct *hp)
         if (n <= 0) {
                 if (n == 0) {
                         hp->do_wakeup = 1;
-                        return;
+                        return 0;
                 }
                 /* throw away output on error; this happens when
                    there is no session connected to the vterm. */
@@ -450,6 +456,8 @@ static void hvc_push(struct hvc_struct *hp)
                 memmove(hp->outbuf, hp->outbuf + n, hp->n_outbuf);
         else
                 hp->do_wakeup = 1;
+
+        return n;
 }
 
 static int hvc_write(struct tty_struct *tty, const unsigned char *buf, int count)
@@ -492,6 +500,39 @@ static int hvc_write(struct tty_struct *tty, const unsigned char *buf, int count
         return written;
 }
 
+/**
+ * hvc_set_winsz() - Resize the hvc tty terminal window.
+ * @work:       work structure.
+ *
+ * The routine shall not be called within an atomic context because it
+ * might sleep.
+ *
+ * Locking:     hp->lock
+ */
+static void hvc_set_winsz(struct work_struct *work)
+{
+        struct hvc_struct *hp;
+        unsigned long hvc_flags;
+        struct tty_struct *tty;
+        struct winsize ws;
+
+        hp = container_of(work, struct hvc_struct, tty_resize);
+        if (!hp)
+                return;
+
+        spin_lock_irqsave(&hp->lock, hvc_flags);
+        if (!hp->tty) {
+                spin_unlock_irqrestore(&hp->lock, hvc_flags);
+                return;
+        }
+        ws  = hp->ws;
+        tty = tty_kref_get(hp->tty);
+        spin_unlock_irqrestore(&hp->lock, hvc_flags);
+
+        tty_do_resize(tty, tty, &ws);
+        tty_kref_put(tty);
+}
+
 /*
  * This is actually a contract between the driver and the tty layer outlining
  * how much write room the driver can guarantee will be sent OR BUFFERED.  This
@@ -538,16 +579,20 @@ int hvc_poll(struct hvc_struct *hp)
         char buf[N_INBUF] __ALIGNED__;
         unsigned long flags;
         int read_total = 0;
+        int written_total = 0;
 
         spin_lock_irqsave(&hp->lock, flags);
 
         /* Push pending writes */
         if (hp->n_outbuf > 0)
-                hvc_push(hp);
+                written_total = hvc_push(hp);
 
         /* Reschedule us if still some write pending */
-        if (hp->n_outbuf > 0)
+        if (hp->n_outbuf > 0) {
                 poll_mask |= HVC_POLL_WRITE;
+                /* If hvc_push() was not able to write, sleep a few msecs */
+                timeout = (written_total) ? 0 : MIN_TIMEOUT;
+        }
 
         /* No tty attached, just skip */
         tty = hp->tty;
@@ -632,6 +677,24 @@ int hvc_poll(struct hvc_struct *hp)
 }
 EXPORT_SYMBOL_GPL(hvc_poll);
 
+/**
+ * hvc_resize() - Update terminal window size information.
+ * @hp:         HVC console pointer
+ * @ws:         Terminal window size structure
+ *
+ * Stores the specified window size information in the hvc structure of @hp.
+ * The function schedule the tty resize update.
+ *
+ * Locking:     Locking free; the function MUST be called holding hp->lock
+ */
+void hvc_resize(struct hvc_struct *hp, struct winsize ws)
+{
+        if ((hp->ws.ws_row != ws.ws_row) || (hp->ws.ws_col != ws.ws_col)) {
+                hp->ws = ws;
+                schedule_work(&hp->tty_resize);
+        }
+}
+
 /*
  * This kthread is either polling or interrupt driven.  This is determined by
  * calling hvc_poll() who determines whether a console adapter support
@@ -659,10 +722,6 @@ static int khvcd(void *unused)
                         poll_mask |= HVC_POLL_READ;
                 if (hvc_kicked)
                         continue;
-                if (poll_mask & HVC_POLL_WRITE) {
-                        yield();
-                        continue;
-                }
                 set_current_state(TASK_INTERRUPTIBLE);
                 if (!hvc_kicked) {
                         if (poll_mask == 0)
@@ -718,6 +777,7 @@ struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int data,
 
         kref_init(&hp->kref);
 
+        INIT_WORK(&hp->tty_resize, hvc_set_winsz);
         spin_lock_init(&hp->lock);
         spin_lock(&hvc_structs_lock);
 
@@ -743,7 +803,7 @@ struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int data,
 }
 EXPORT_SYMBOL_GPL(hvc_alloc);
 
-int __devexit hvc_remove(struct hvc_struct *hp)
+int hvc_remove(struct hvc_struct *hp)
 {
         unsigned long flags;
         struct tty_struct *tty;
@@ -796,7 +856,7 @@ static int hvc_init(void)
         drv->minor_start = HVC_MINOR;
         drv->type = TTY_DRIVER_TYPE_SYSTEM;
         drv->init_termios = tty_std_termios;
-        drv->flags = TTY_DRIVER_REAL_RAW;
+        drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS;
         tty_set_operations(drv, &hvc_ops);
 
         /* Always start the kthread because there can be hotplug vty adapters
diff --git a/drivers/char/hvc_console.h b/drivers/char/hvc_console.h
index 9790201718ae..8297dbc2e6ec 100644
--- a/drivers/char/hvc_console.h
+++ b/drivers/char/hvc_console.h
@@ -27,6 +27,7 @@
 #ifndef HVC_CONSOLE_H
 #define HVC_CONSOLE_H
 #include <linux/kref.h>
+#include <linux/tty.h>
 
 /*
  * This is the max number of console adapters that can/will be found as
@@ -56,6 +57,8 @@ struct hvc_struct {
         struct hv_ops *ops;
         int irq_requested;
         int data;
+        struct winsize ws;
+        struct work_struct tty_resize;
         struct list_head next;
         struct kref kref; /* ref count & hvc_struct lifetime */
 };
@@ -65,9 +68,10 @@ struct hv_ops {
         int (*get_chars)(uint32_t vtermno, char *buf, int count);
         int (*put_chars)(uint32_t vtermno, const char *buf, int count);
 
-        /* Callbacks for notification. Called in open and close */
+        /* Callbacks for notification. Called in open, close and hangup */
         int (*notifier_add)(struct hvc_struct *hp, int irq);
         void (*notifier_del)(struct hvc_struct *hp, int irq);
+        void (*notifier_hangup)(struct hvc_struct *hp, int irq);
 };
 
 /* Register a vterm and a slot index for use as a console (console_init) */
@@ -77,15 +81,19 @@ extern int hvc_instantiate(uint32_t vtermno, int index, struct hv_ops *ops);
 extern struct hvc_struct * __devinit hvc_alloc(uint32_t vtermno, int data,
                                 struct hv_ops *ops, int outbuf_size);
 /* remove a vterm from hvc tty operation (module_exit or hotplug remove) */
-extern int __devexit hvc_remove(struct hvc_struct *hp);
+extern int hvc_remove(struct hvc_struct *hp);
 
 /* data available */
 int hvc_poll(struct hvc_struct *hp);
 void hvc_kick(void);
 
+/* Resize hvc tty terminal window */
+extern void hvc_resize(struct hvc_struct *hp, struct winsize ws);
+
 /* default notifier for irq based notification */
 extern int notifier_add_irq(struct hvc_struct *hp, int data);
 extern void notifier_del_irq(struct hvc_struct *hp, int data);
+extern void notifier_hangup_irq(struct hvc_struct *hp, int data);
 
 
 #if defined(CONFIG_XMON) && defined(CONFIG_SMP)
diff --git a/drivers/char/hvc_irq.c b/drivers/char/hvc_irq.c
index 73a59cdb8947..d09e5688d449 100644
--- a/drivers/char/hvc_irq.c
+++ b/drivers/char/hvc_irq.c
@@ -42,3 +42,8 @@ void notifier_del_irq(struct hvc_struct *hp, int irq)
         free_irq(irq, hp);
         hp->irq_requested = 0;
 }
+
+void notifier_hangup_irq(struct hvc_struct *hp, int irq)
+{
+        notifier_del_irq(hp, irq);
+}
diff --git a/drivers/char/hvc_iseries.c b/drivers/char/hvc_iseries.c
index b71c610fe5ae..b74a2f8ab908 100644
--- a/drivers/char/hvc_iseries.c
+++ b/drivers/char/hvc_iseries.c
@@ -202,6 +202,7 @@ static struct hv_ops hvc_get_put_ops = {
         .put_chars = put_chars,
         .notifier_add = notifier_add_irq,
         .notifier_del = notifier_del_irq,
+        .notifier_hangup = notifier_hangup_irq,
 };
 
 static int __devinit hvc_vio_probe(struct vio_dev *vdev,
diff --git a/drivers/char/hvc_vio.c b/drivers/char/hvc_vio.c
index 93f3840c1682..019e0b58593d 100644
--- a/drivers/char/hvc_vio.c
+++ b/drivers/char/hvc_vio.c
@@ -82,6 +82,7 @@ static struct hv_ops hvc_get_put_ops = {
         .put_chars = hvc_put_chars,
         .notifier_add = notifier_add_irq,
         .notifier_del = notifier_del_irq,
+        .notifier_hangup = notifier_hangup_irq,
 };
 
 static int __devinit hvc_vio_probe(struct vio_dev *vdev,
diff --git a/drivers/char/hvc_xen.c b/drivers/char/hvc_xen.c
index 538ceea5e7df..eba999f8598d 100644
--- a/drivers/char/hvc_xen.c
+++ b/drivers/char/hvc_xen.c
@@ -102,6 +102,7 @@ static struct hv_ops hvc_ops = {
         .put_chars = write_console,
         .notifier_add = notifier_add_irq,
         .notifier_del = notifier_del_irq,
+        .notifier_hangup = notifier_hangup_irq,
 };
 
 static int __init xen_init(void)
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index d0f4eb6fdb7f..3fb0d2c88ba5 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -198,6 +198,7 @@ static int __devinit virtcons_probe(struct virtio_device *dev)
         virtio_cons.put_chars = put_chars;
         virtio_cons.notifier_add = notifier_add_vio;
         virtio_cons.notifier_del = notifier_del_vio;
+        virtio_cons.notifier_hangup = notifier_del_vio;
 
         /* The first argument of hvc_alloc() is the virtual console number, so
          * we use zero.  The second argument is the parameter for the
diff --git a/drivers/i2c/busses/i2c-cpm.c b/drivers/i2c/busses/i2c-cpm.c
index 8164de1f4d72..228f75723063 100644
--- a/drivers/i2c/busses/i2c-cpm.c
+++ b/drivers/i2c/busses/i2c-cpm.c
@@ -423,7 +423,6 @@ static const struct i2c_adapter cpm_ops = {
         .owner          = THIS_MODULE,
         .name           = "i2c-cpm",
         .algo           = &cpm_i2c_algo,
-        .class          = I2C_CLASS_HWMON | I2C_CLASS_SPD,
 };
 
 static int __devinit cpm_i2c_setup(struct cpm_i2c *cpm)
diff --git a/drivers/net/fec_mpc52xx_phy.c b/drivers/net/fec_mpc52xx_phy.c
index 08e18bcb970f..45dd9bdc5d62 100644
--- a/drivers/net/fec_mpc52xx_phy.c
+++ b/drivers/net/fec_mpc52xx_phy.c
@@ -2,6 +2,7 @@
  * Driver for the MPC5200 Fast Ethernet Controller - MDIO bus driver
  *
  * Copyright (C) 2007  Domen Puncer, Telargo, Inc.
+ * Copyright (C) 2008  Wolfram Sang, Pengutronix
  *
  * This file is licensed under the terms of the GNU General Public License
  * version 2. This program is licensed "as is" without any warranty of any
@@ -21,58 +22,45 @@ struct mpc52xx_fec_mdio_priv {
         struct mpc52xx_fec __iomem *regs;
 };
 
-static int mpc52xx_fec_mdio_read(struct mii_bus *bus, int phy_id, int reg)
+static int mpc52xx_fec_mdio_transfer(struct mii_bus *bus, int phy_id,
+                int reg, u32 value)
 {
         struct mpc52xx_fec_mdio_priv *priv = bus->priv;
         struct mpc52xx_fec __iomem *fec;
         int tries = 100;
-        u32 request = FEC_MII_READ_FRAME;
+
+        value |= (phy_id << FEC_MII_DATA_PA_SHIFT) & FEC_MII_DATA_PA_MSK;
+        value |= (reg << FEC_MII_DATA_RA_SHIFT) & FEC_MII_DATA_RA_MSK;
 
         fec = priv->regs;
         out_be32(&fec->ievent, FEC_IEVENT_MII);
-
-        request |= (phy_id << FEC_MII_DATA_PA_SHIFT) & FEC_MII_DATA_PA_MSK;
-        request |= (reg << FEC_MII_DATA_RA_SHIFT) & FEC_MII_DATA_RA_MSK;
-
-        out_be32(&priv->regs->mii_data, request);
+        out_be32(&priv->regs->mii_data, value);
 
         /* wait for it to finish, this takes about 23 us on lite5200b */
         while (!(in_be32(&fec->ievent) & FEC_IEVENT_MII) && --tries)
                 udelay(5);
 
-        if (tries == 0)
+        if (!tries)
                 return -ETIMEDOUT;
 
-        return in_be32(&priv->regs->mii_data) & FEC_MII_DATA_DATAMSK;
+        return value & FEC_MII_DATA_OP_RD ?
+                in_be32(&priv->regs->mii_data) & FEC_MII_DATA_DATAMSK : 0;
 }
 
-static int mpc52xx_fec_mdio_write(struct mii_bus *bus, int phy_id, int reg, u16 data)
+static int mpc52xx_fec_mdio_read(struct mii_bus *bus, int phy_id, int reg)
 {
-        struct mpc52xx_fec_mdio_priv *priv = bus->priv;
-        struct mpc52xx_fec __iomem *fec;
-        u32 value = data;
-        int tries = 100;
-
-        fec = priv->regs;
-        out_be32(&fec->ievent, FEC_IEVENT_MII);
-
-        value |= FEC_MII_WRITE_FRAME;
-        value |= (phy_id << FEC_MII_DATA_PA_SHIFT) & FEC_MII_DATA_PA_MSK;
-        value |= (reg << FEC_MII_DATA_RA_SHIFT) & FEC_MII_DATA_RA_MSK;
-
-        out_be32(&priv->regs->mii_data, value);
-
-        /* wait for request to finish */
-        while (!(in_be32(&fec->ievent) & FEC_IEVENT_MII) && --tries)
-                udelay(5);
-
-        if (tries == 0)
-                return -ETIMEDOUT;
+        return mpc52xx_fec_mdio_transfer(bus, phy_id, reg, FEC_MII_READ_FRAME);
+}
 
-        return 0;
+static int mpc52xx_fec_mdio_write(struct mii_bus *bus, int phy_id, int reg,
+                u16 data)
+{
+        return mpc52xx_fec_mdio_transfer(bus, phy_id, reg,
+                data | FEC_MII_WRITE_FRAME);
 }
 
-static int mpc52xx_fec_mdio_probe(struct of_device *of, const struct of_device_id *match)
+static int mpc52xx_fec_mdio_probe(struct of_device *of,
+                const struct of_device_id *match)
 {
         struct device *dev = &of->dev;
         struct device_node *np = of->node;
@@ -131,7 +119,8 @@ static int mpc52xx_fec_mdio_probe(struct of_device *of, const struct of_device_i
         dev_set_drvdata(dev, bus);
 
         /* set MII speed */
-        out_be32(&priv->regs->mii_speed, ((mpc52xx_find_ipb_freq(of->node) >> 20) / 5) << 1);
+        out_be32(&priv->regs->mii_speed,
+                ((mpc52xx_find_ipb_freq(of->node) >> 20) / 5) << 1);
 
         /* enable MII interrupt */
         out_be32(&priv->regs->imask, in_be32(&priv->regs->imask) | FEC_IMASK_MII);
diff --git a/drivers/net/ibm_newemac/core.c b/drivers/net/ibm_newemac/core.c
index efcf21c9f5c7..2ee2622258f5 100644
--- a/drivers/net/ibm_newemac/core.c
+++ b/drivers/net/ibm_newemac/core.c
@@ -2604,8 +2604,16 @@ static int __devinit emac_init_config(struct emac_instance *dev)
                 if (of_device_is_compatible(np, "ibm,emac-440ep") ||
                     of_device_is_compatible(np, "ibm,emac-440gr"))
                         dev->features |= EMAC_FTR_440EP_PHY_CLK_FIX;
-                if (of_device_is_compatible(np, "ibm,emac-405ez"))
+                if (of_device_is_compatible(np, "ibm,emac-405ez")) {
+#ifdef CONFIG_IBM_NEW_EMAC_NO_FLOW_CONTROL
                         dev->features |= EMAC_FTR_NO_FLOW_CONTROL_40x;
+#else
+                        printk(KERN_ERR "%s: Flow control not disabled!\n",
+                                        np->full_name);
+                        return -ENXIO;
+#endif
+                }
+
         }
 
         /* Fixup some feature bits based on the device tree */
diff --git a/drivers/net/ibm_newemac/mal.c b/drivers/net/ibm_newemac/mal.c
index 1839d3f154a3..ecf9798987fa 100644
--- a/drivers/net/ibm_newemac/mal.c
+++ b/drivers/net/ibm_newemac/mal.c
@@ -280,9 +280,11 @@ static irqreturn_t mal_txeob(int irq, void *dev_instance)
         mal_schedule_poll(mal);
         set_mal_dcrn(mal, MAL_TXEOBISR, r);
 
+#ifdef CONFIG_PPC_DCR_NATIVE
         if (mal_has_feature(mal, MAL_FTR_CLEAR_ICINTSTAT))
                 mtdcri(SDR0, DCRN_SDR_ICINTSTAT,
                                 (mfdcri(SDR0, DCRN_SDR_ICINTSTAT) | ICINTSTAT_ICTX));
+#endif
 
         return IRQ_HANDLED;
 }
@@ -298,9 +300,11 @@ static irqreturn_t mal_rxeob(int irq, void *dev_instance)
         mal_schedule_poll(mal);
         set_mal_dcrn(mal, MAL_RXEOBISR, r);
 
+#ifdef CONFIG_PPC_DCR_NATIVE
         if (mal_has_feature(mal, MAL_FTR_CLEAR_ICINTSTAT))
                 mtdcri(SDR0, DCRN_SDR_ICINTSTAT,
                                 (mfdcri(SDR0, DCRN_SDR_ICINTSTAT) | ICINTSTAT_ICRX));
+#endif
 
         return IRQ_HANDLED;
 }
@@ -572,9 +576,18 @@ static int __devinit mal_probe(struct of_device *ofdev,
                 goto fail;
         }
 
-        if (of_device_is_compatible(ofdev->node, "ibm,mcmal-405ez"))
+        if (of_device_is_compatible(ofdev->node, "ibm,mcmal-405ez")) {
+#if defined(CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT) && \
+                defined(CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR)
                 mal->features |= (MAL_FTR_CLEAR_ICINTSTAT |
                                 MAL_FTR_COMMON_ERR_INT);
+#else
+                printk(KERN_ERR "%s: Support for 405EZ not enabled!\n",
+                                ofdev->node->full_name);
+                err = -ENODEV;
+                goto fail;
+#endif
+        }
 
         mal->txeob_irq = irq_of_parse_and_map(ofdev->node, 0);
         mal->rxeob_irq = irq_of_parse_and_map(ofdev->node, 1);
diff --git a/drivers/of/of_i2c.c b/drivers/of/of_i2c.c
index 6a98dc8aa30b..24bbef777c19 100644
--- a/drivers/of/of_i2c.c
+++ b/drivers/of/of_i2c.c
@@ -41,7 +41,7 @@ void of_register_i2c_devices(struct i2c_adapter *adap,
 
                 info.addr = *addr;
 
-                request_module(info.type);
+                request_module("%s", info.type);
 
                 result = i2c_new_device(adap, &info);
                 if (result == NULL) {
diff --git a/drivers/of/of_spi.c b/drivers/of/of_spi.c
index b01eec026f68..bed0ed6dcdc1 100644
--- a/drivers/of/of_spi.c
+++ b/drivers/of/of_spi.c
@@ -61,6 +61,8 @@ void of_register_spi_devices(struct spi_master *master, struct device_node *np)
                         spi->mode |= SPI_CPHA;
                 if (of_find_property(nc, "spi-cpol", NULL))
                         spi->mode |= SPI_CPOL;
+                if (of_find_property(nc, "spi-cs-high", NULL))
+                        spi->mode |= SPI_CS_HIGH;
 
                 /* Device speed */
                 prop = of_get_property(nc, "spi-max-frequency", &len);
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
index ed982273fb8b..37681700b61a 100644
--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -628,3 +628,27 @@ void sync_buffer(int cpu)
 
         mutex_unlock(&buffer_mutex);
 }
+
+/* The function can be used to add a buffer worth of data directly to
+ * the kernel buffer. The buffer is assumed to be a circular buffer.
+ * Take the entries from index start and end at index end, wrapping
+ * at max_entries.
+ */
+void oprofile_put_buff(unsigned long *buf, unsigned int start,
+                       unsigned int stop, unsigned int max)
+{
+        int i;
+
+        i = start;
+
+        mutex_lock(&buffer_mutex);
+        while (i != stop) {
+                add_event_entry(buf[i++]);
+
+                if (i >= max)
+                        i = 0;
+        }
+
+        mutex_unlock(&buffer_mutex);
+}
+
diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c
index e1bd5a937f6c..7ba39fe20a8a 100644
--- a/drivers/oprofile/cpu_buffer.c
+++ b/drivers/oprofile/cpu_buffer.c
@@ -38,13 +38,26 @@ static int work_enabled;
 void free_cpu_buffers(void)
 {
         int i;
- 
+
         for_each_online_cpu(i) {
                 vfree(per_cpu(cpu_buffer, i).buffer);
                 per_cpu(cpu_buffer, i).buffer = NULL;
         }
 }
 
+unsigned long oprofile_get_cpu_buffer_size(void)
+{
+        return fs_cpu_buffer_size;
+}
+
+void oprofile_cpu_buffer_inc_smpl_lost(void)
+{
+        struct oprofile_cpu_buffer *cpu_buf
+                = &__get_cpu_var(cpu_buffer);
+
+        cpu_buf->sample_lost_overflow++;
+}
+
 int alloc_cpu_buffers(void)
 {
         int i;
diff --git a/drivers/oprofile/event_buffer.h b/drivers/oprofile/event_buffer.h
index 5076ed1ebd8f..84bf324c5771 100644
--- a/drivers/oprofile/event_buffer.h
+++ b/drivers/oprofile/event_buffer.h
@@ -17,6 +17,13 @@ int alloc_event_buffer(void);
 
 void free_event_buffer(void);
  
+/**
+ * Add data to the event buffer.
+ * The data passed is free-form, but typically consists of
+ * file offsets, dcookies, context information, and ESCAPE codes.
+ */
+void add_event_entry(unsigned long data);
+
 /* wake up the process sleeping on the event file */
 void wake_up_buffer_waiter(void);