Merge branch 'devel-stable' into devel

Conflicts:
	arch/arm/Kconfig
	arch/arm/include/asm/system.h
	arch/arm/mm/Kconfig

34 files changed, 113 insertions, 44 deletions

diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c
index e8d568c3fb09..a39e6cff86e7 100644
--- a/drivers/i2c/algos/i2c-algo-bit.c
+++ b/drivers/i2c/algos/i2c-algo-bit.c
@@ -24,7 +24,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/delay.h>
-#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/sched.h>
diff --git a/drivers/i2c/algos/i2c-algo-pcf.c b/drivers/i2c/algos/i2c-algo-pcf.c
index 6b6bd06202b2..5eebf562ff31 100644
--- a/drivers/i2c/algos/i2c-algo-pcf.c
+++ b/drivers/i2c/algos/i2c-algo-pcf.c
@@ -29,7 +29,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/delay.h>
-#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/i2c.h>
diff --git a/drivers/i2c/busses/i2c-amd8111.c b/drivers/i2c/busses/i2c-amd8111.c
index d0dc970d7370..2fbef27b6cd6 100644
--- a/drivers/i2c/busses/i2c-amd8111.c
+++ b/drivers/i2c/busses/i2c-amd8111.c
@@ -17,6 +17,7 @@
 #include <linux/i2c.h>
 #include <linux/delay.h>
 #include <linux/acpi.h>
+#include <linux/slab.h>
 #include <asm/io.h>
 
 MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c
index fe3fb567317d..f1e14dd590c9 100644
--- a/drivers/i2c/busses/i2c-bfin-twi.c
+++ b/drivers/i2c/busses/i2c-bfin-twi.c
@@ -12,6 +12,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/i2c.h>
+#include <linux/slab.h>
 #include <linux/io.h>
 #include <linux/mm.h>
 #include <linux/timer.h>
diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
index c89687a10835..4523364e6722 100644
--- a/drivers/i2c/busses/i2c-davinci.c
+++ b/drivers/i2c/busses/i2c-davinci.c
@@ -35,6 +35,7 @@
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
+#include <linux/slab.h>
 
 #include <mach/hardware.h>
 
diff --git a/drivers/i2c/busses/i2c-designware.c b/drivers/i2c/busses/i2c-designware.c
index 3e72b69aa7f8..b664ed8bbdb3 100644
--- a/drivers/i2c/busses/i2c-designware.c
+++ b/drivers/i2c/busses/i2c-designware.c
@@ -36,6 +36,7 @@
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
+#include <linux/slab.h>
 
 /*
  * Registers offset
diff --git a/drivers/i2c/busses/i2c-elektor.c b/drivers/i2c/busses/i2c-elektor.c
index 448b4bf35eb7..612255614a66 100644
--- a/drivers/i2c/busses/i2c-elektor.c
+++ b/drivers/i2c/busses/i2c-elektor.c
@@ -29,7 +29,6 @@
 #include <linux/ioport.h>
 #include <linux/module.h>
 #include <linux/delay.h>
-#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/pci.h>
diff --git a/drivers/i2c/busses/i2c-gpio.c b/drivers/i2c/busses/i2c-gpio.c
index 32104eac8d3d..c21077d248af 100644
--- a/drivers/i2c/busses/i2c-gpio.c
+++ b/drivers/i2c/busses/i2c-gpio.c
@@ -12,6 +12,7 @@
 #include <linux/i2c-gpio.h>
 #include <linux/init.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/platform_device.h>
 
 #include <asm/gpio.h>
diff --git a/drivers/i2c/busses/i2c-highlander.c b/drivers/i2c/busses/i2c-highlander.c
index 87ecace415da..ce87a902c94d 100644
--- a/drivers/i2c/busses/i2c-highlander.c
+++ b/drivers/i2c/busses/i2c-highlander.c
@@ -19,6 +19,7 @@
 #include <linux/completion.h>
 #include <linux/io.h>
 #include <linux/delay.h>
+#include <linux/slab.h>
 
 #define SMCR            0x00
 #define SMCR_START      (1 << 0)
diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 32375bddae7d..d1ff9408dc1f 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -47,6 +47,7 @@
 #include <linux/sched.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
+#include <linux/slab.h>
 
 #include <mach/irqs.h>
 #include <mach/hardware.h>
@@ -145,10 +146,10 @@ static int i2c_imx_bus_busy(struct imx_i2c_struct *i2c_imx, int for_busy)
                                 "<%s> I2C Interrupted\n", __func__);
                         return -EINTR;
                 }
-                if (time_after(jiffies, orig_jiffies + HZ / 1000)) {
+                if (time_after(jiffies, orig_jiffies + msecs_to_jiffies(500))) {
                         dev_dbg(&i2c_imx->adapter.dev,
                                 "<%s> I2C bus is busy\n", __func__);
-                        return -EIO;
+                        return -ETIMEDOUT;
                 }
                 schedule();
         }
@@ -443,6 +444,8 @@ static int i2c_imx_xfer(struct i2c_adapter *adapter,
                         result = i2c_imx_read(i2c_imx, &msgs[i]);
                 else
                         result = i2c_imx_write(i2c_imx, &msgs[i]);
+                if (result)
+                        goto fail0;
         }
 
 fail0:
diff --git a/drivers/i2c/busses/i2c-ixp2000.c b/drivers/i2c/busses/i2c-ixp2000.c
index c016f7a2c5fc..5d8aed5ec21b 100644
--- a/drivers/i2c/busses/i2c-ixp2000.c
+++ b/drivers/i2c/busses/i2c-ixp2000.c
@@ -32,6 +32,7 @@
 #include <linux/module.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-bit.h>
+#include <linux/slab.h>
 
 #include <mach/hardware.h>      /* Pick up IXP2000-specific bits */
 #include <mach/gpio.h>
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
index 78a15af32942..f1321f763789 100644
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c
@@ -19,6 +19,7 @@
 #include <linux/init.h>
 #include <linux/of_platform.h>
 #include <linux/of_i2c.h>
+#include <linux/slab.h>
 
 #include <linux/io.h>
 #include <linux/fsl_devices.h>
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index ed387ffa4730..3623a4499084 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -10,6 +10,7 @@
  * or implied.
  */
 #include <linux/kernel.h>
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/spinlock.h>
 #include <linux/i2c.h>
diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c
index 4a700587ef18..4a48dd4ef787 100644
--- a/drivers/i2c/busses/i2c-nforce2.c
+++ b/drivers/i2c/busses/i2c-nforce2.c
@@ -56,6 +56,7 @@
 #include <linux/delay.h>
 #include <linux/dmi.h>
 #include <linux/acpi.h>
+#include <linux/slab.h>
 #include <asm/io.h>
 
 MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c
index a15f731fa451..a4f8d33fa389 100644
--- a/drivers/i2c/busses/i2c-nomadik.c
+++ b/drivers/i2c/busses/i2c-nomadik.c
@@ -16,6 +16,7 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/delay.h>
+#include <linux/slab.h>
 #include <linux/interrupt.h>
 #include <linux/i2c.h>
 #include <linux/err.h>
diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c
index 0dabe643ec51..b4ed4ca802ed 100644
--- a/drivers/i2c/busses/i2c-ocores.c
+++ b/drivers/i2c/busses/i2c-ocores.c
@@ -18,6 +18,7 @@
 #include <linux/interrupt.h>
 #include <linux/wait.h>
 #include <linux/i2c-ocores.h>
+#include <linux/slab.h>
 #include <asm/io.h>
 
 struct ocores_i2c {
diff --git a/drivers/i2c/busses/i2c-octeon.c b/drivers/i2c/busses/i2c-octeon.c
index 60375504fa49..0e9f85d0a835 100644
--- a/drivers/i2c/busses/i2c-octeon.c
+++ b/drivers/i2c/busses/i2c-octeon.c
@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/sched.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 
 #include <linux/io.h>
@@ -446,7 +447,7 @@ static struct i2c_adapter octeon_i2c_ops = {
 /**
  * octeon_i2c_setclock - Calculate and set clock divisors.
  */
-static int __init octeon_i2c_setclock(struct octeon_i2c *i2c)
+static int __devinit octeon_i2c_setclock(struct octeon_i2c *i2c)
 {
         int tclk, thp_base, inc, thp_idx, mdiv_idx, ndiv_idx, foscl, diff;
         int thp = 0x18, mdiv = 2, ndiv = 0, delta_hz = 1000000;
@@ -489,7 +490,7 @@ static int __init octeon_i2c_setclock(struct octeon_i2c *i2c)
         return 0;
 }
 
-static int __init octeon_i2c_initlowlevel(struct octeon_i2c *i2c)
+static int __devinit octeon_i2c_initlowlevel(struct octeon_i2c *i2c)
 {
         u8 status;
         int tries;
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index c7c237537f81..389ac6032a7b 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -37,6 +37,7 @@
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 #include <linux/io.h>
+#include <linux/slab.h>
 
 /* I2C controller revisions */
 #define OMAP_I2C_REV_2                  0x20
@@ -902,6 +903,11 @@ omap_i2c_probe(struct platform_device *pdev)
 
         platform_set_drvdata(pdev, dev);
 
+        if (cpu_is_omap7xx())
+                dev->reg_shift = 1;
+        else
+                dev->reg_shift = 2;
+
         if ((r = omap_i2c_get_clocks(dev)) != 0)
                 goto err_iounmap;
 
@@ -925,11 +931,6 @@ omap_i2c_probe(struct platform_device *pdev)
                 dev->b_hw = 1; /* Enable hardware fixes */
         }
 
-        if (cpu_is_omap7xx())
-                dev->reg_shift = 1;
-        else
-                dev->reg_shift = 2;
-
         /* reset ASAP, clearing any IRQs */
         omap_i2c_init(dev);
 
diff --git a/drivers/i2c/busses/i2c-parport.c b/drivers/i2c/busses/i2c-parport.c
index 220fca7f23a6..846583ed4763 100644
--- a/drivers/i2c/busses/i2c-parport.c
+++ b/drivers/i2c/busses/i2c-parport.c
@@ -32,6 +32,7 @@
 #include <linux/i2c.h>
 #include <linux/i2c-algo-bit.h>
 #include <linux/i2c-smbus.h>
+#include <linux/slab.h>
 #include "i2c-parport.h"
 
 /* ----- Device list ------------------------------------------------------ */
diff --git a/drivers/i2c/busses/i2c-pasemi.c b/drivers/i2c/busses/i2c-pasemi.c
index 0d20ff46a518..d3d4a4b43a1d 100644
--- a/drivers/i2c/busses/i2c-pasemi.c
+++ b/drivers/i2c/busses/i2c-pasemi.c
@@ -24,6 +24,7 @@
 #include <linux/sched.h>
 #include <linux/i2c.h>
 #include <linux/delay.h>
+#include <linux/slab.h>
 #include <asm/io.h>
 
 static struct pci_driver pasemi_smb_driver;
diff --git a/drivers/i2c/busses/i2c-pnx.c b/drivers/i2c/busses/i2c-pnx.c
index 9532dee6b580..a97e3fec8148 100644
--- a/drivers/i2c/busses/i2c-pnx.c
+++ b/drivers/i2c/busses/i2c-pnx.c
@@ -22,6 +22,7 @@
 #include <linux/io.h>
 #include <linux/err.h>
 #include <linux/clk.h>
+#include <linux/slab.h>
 
 #include <mach/hardware.h>
 #include <mach/i2c.h>
@@ -172,6 +173,9 @@ static int i2c_pnx_master_xmit(struct i2c_pnx_algo_data *alg_data)
                 /* We still have something to talk about... */
                 val = *alg_data->mif.buf++;
 
+                if (alg_data->mif.len == 1)
+                        val |= stop_bit;
+
                 alg_data->mif.len--;
                 iowrite32(val, I2C_REG_TX(alg_data));
 
@@ -245,6 +249,9 @@ static int i2c_pnx_master_rcv(struct i2c_pnx_algo_data *alg_data)
                         __func__);
 
                 if (alg_data->mif.len == 1) {
+                        /* Last byte, do not acknowledge next rcv. */
+                        val |= stop_bit;
+
                         /*
                          * Enable interrupt RFDAIE (data in Rx fifo),
                          * and disable DRMIE (need data for Tx)
@@ -632,6 +639,8 @@ static int __devinit i2c_pnx_probe(struct platform_device *pdev)
          */
 
         tmp = ((freq / 1000) / I2C_PNX_SPEED_KHZ) / 2 - 2;
+        if (tmp > 0x3FF)
+                tmp = 0x3FF;
         iowrite32(tmp, I2C_REG_CKH(alg_data));
         iowrite32(tmp, I2C_REG_CKL(alg_data));
 
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index 90ffbf6f9d4f..14d249f5ed3f 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -33,6 +33,7 @@
 #include <linux/platform_device.h>
 #include <linux/err.h>
 #include <linux/clk.h>
+#include <linux/slab.h>
 
 #include <asm/irq.h>
 #include <asm/io.h>
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 1d8c98613fa0..d27072b2249f 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -34,6 +34,7 @@
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 #include <linux/cpufreq.h>
+#include <linux/slab.h>
 
 #include <asm/irq.h>
 #include <asm/io.h>
diff --git a/drivers/i2c/busses/i2c-scmi.c b/drivers/i2c/busses/i2c-scmi.c
index 365e0becaf12..388cbdc96db7 100644
--- a/drivers/i2c/busses/i2c-scmi.c
+++ b/drivers/i2c/busses/i2c-scmi.c
@@ -33,6 +33,7 @@ struct acpi_smbus_cmi {
         u8 cap_info:1;
         u8 cap_read:1;
         u8 cap_write:1;
+        struct smbus_methods_t *methods;
 };
 
 static const struct smbus_methods_t smbus_methods = {
@@ -41,10 +42,19 @@ static const struct smbus_methods_t smbus_methods = {
         .mt_sbw  = "_SBW",
 };
 
+/* Some IBM BIOSes omit the leading underscore */
+static const struct smbus_methods_t ibm_smbus_methods = {
+        .mt_info = "SBI_",
+        .mt_sbr  = "SBR_",
+        .mt_sbw  = "SBW_",
+};
+
 static const struct acpi_device_id acpi_smbus_cmi_ids[] = {
-        {"SMBUS01", 0},
+        {"SMBUS01", (kernel_ulong_t)&smbus_methods},
+        {ACPI_SMBUS_IBM_HID, (kernel_ulong_t)&ibm_smbus_methods},
         {"", 0}
 };
+MODULE_DEVICE_TABLE(acpi, acpi_smbus_cmi_ids);
 
 #define ACPI_SMBUS_STATUS_OK                    0x00
 #define ACPI_SMBUS_STATUS_FAIL                  0x07
@@ -150,11 +160,11 @@ acpi_smbus_cmi_access(struct i2c_adapter *adap, u16 addr, unsigned short flags,
 
         if (read_write == I2C_SMBUS_READ) {
                 protocol |= ACPI_SMBUS_PRTCL_READ;
-                method = smbus_methods.mt_sbr;
+                method = smbus_cmi->methods->mt_sbr;
                 input.count = 3;
         } else {
                 protocol |= ACPI_SMBUS_PRTCL_WRITE;
-                method = smbus_methods.mt_sbw;
+                method = smbus_cmi->methods->mt_sbw;
                 input.count = 5;
         }
 
@@ -290,13 +300,13 @@ static int acpi_smbus_cmi_add_cap(struct acpi_smbus_cmi *smbus_cmi,
         union acpi_object *obj;
         acpi_status status;
 
-        if (!strcmp(name, smbus_methods.mt_info)) {
+        if (!strcmp(name, smbus_cmi->methods->mt_info)) {
                 status = acpi_evaluate_object(smbus_cmi->handle,
-                                        smbus_methods.mt_info,
+                                        smbus_cmi->methods->mt_info,
                                         NULL, &buffer);
                 if (ACPI_FAILURE(status)) {
                         ACPI_ERROR((AE_INFO, "Evaluating %s: %i",
-                                   smbus_methods.mt_info, status));
+                                   smbus_cmi->methods->mt_info, status));
                         return -EIO;
                 }
 
@@ -319,9 +329,9 @@ static int acpi_smbus_cmi_add_cap(struct acpi_smbus_cmi *smbus_cmi,
 
                 kfree(buffer.pointer);
                 smbus_cmi->cap_info = 1;
-        } else if (!strcmp(name, smbus_methods.mt_sbr))
+        } else if (!strcmp(name, smbus_cmi->methods->mt_sbr))
                 smbus_cmi->cap_read = 1;
-        else if (!strcmp(name, smbus_methods.mt_sbw))
+        else if (!strcmp(name, smbus_cmi->methods->mt_sbw))
                 smbus_cmi->cap_write = 1;
         else
                 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unsupported CMI method: %s\n",
@@ -349,6 +359,7 @@ static acpi_status acpi_smbus_cmi_query_methods(acpi_handle handle, u32 level,
 static int acpi_smbus_cmi_add(struct acpi_device *device)
 {
         struct acpi_smbus_cmi *smbus_cmi;
+        const struct acpi_device_id *id;
 
         smbus_cmi = kzalloc(sizeof(struct acpi_smbus_cmi), GFP_KERNEL);
         if (!smbus_cmi)
@@ -362,6 +373,11 @@ static int acpi_smbus_cmi_add(struct acpi_device *device)
         smbus_cmi->cap_read = 0;
         smbus_cmi->cap_write = 0;
 
+        for (id = acpi_smbus_cmi_ids; id->id[0]; id++)
+                if (!strcmp(id->id, acpi_device_hid(device)))
+                        smbus_cmi->methods =
+                                (struct smbus_methods_t *) id->driver_data;
+
         acpi_walk_namespace(ACPI_TYPE_METHOD, smbus_cmi->handle, 1,
                             acpi_smbus_cmi_query_methods, NULL, smbus_cmi, NULL);
 
diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c
index ccc46418ef7f..ffb405d7c6f2 100644
--- a/drivers/i2c/busses/i2c-sh_mobile.c
+++ b/drivers/i2c/busses/i2c-sh_mobile.c
@@ -31,6 +31,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/clk.h>
 #include <linux/io.h>
+#include <linux/slab.h>
 
 /* Transmit operation:                                                      */
 /*                                                                          */
diff --git a/drivers/i2c/busses/i2c-simtec.c b/drivers/i2c/busses/i2c-simtec.c
index 6407f47bda82..78b06107342c 100644
--- a/drivers/i2c/busses/i2c-simtec.c
+++ b/drivers/i2c/busses/i2c-simtec.c
@@ -23,6 +23,7 @@
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 
 #include <linux/i2c.h>
 #include <linux/i2c-algo-bit.h>
diff --git a/drivers/i2c/busses/i2c-stu300.c b/drivers/i2c/busses/i2c-stu300.c
index d2728a28a8db..495be451d326 100644
--- a/drivers/i2c/busses/i2c-stu300.c
+++ b/drivers/i2c/busses/i2c-stu300.c
@@ -16,6 +16,7 @@
 #include <linux/interrupt.h>
 #include <linux/clk.h>
 #include <linux/io.h>
+#include <linux/slab.h>
 
 /* the name of this kernel module */
 #define NAME "stu300"
@@ -497,7 +498,7 @@ static int stu300_set_clk(struct stu300_dev *dev, unsigned long clkrate)
         int i = 0;
 
         /* Locate the apropriate clock setting */
-        while (i < ARRAY_SIZE(stu300_clktable) &&
+        while (i < ARRAY_SIZE(stu300_clktable) - 1 &&
                stu300_clktable[i].rate < clkrate)
                 i++;
 
diff --git a/drivers/i2c/busses/i2c-tiny-usb.c b/drivers/i2c/busses/i2c-tiny-usb.c
index b5b1bbf37d3c..d03b04002f0d 100644
--- a/drivers/i2c/busses/i2c-tiny-usb.c
+++ b/drivers/i2c/busses/i2c-tiny-usb.c
@@ -13,6 +13,7 @@
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/types.h>
 
 /* include interfaces to usb layer */
diff --git a/drivers/i2c/busses/i2c-versatile.c b/drivers/i2c/busses/i2c-versatile.c
index 70de82163463..5c473833d948 100644
--- a/drivers/i2c/busses/i2c-versatile.c
+++ b/drivers/i2c/busses/i2c-versatile.c
@@ -14,6 +14,7 @@
 #include <linux/i2c-algo-bit.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 
 #include <asm/io.h>
 
diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c
index f0ef8da6c554..a9c419e075a5 100644
--- a/drivers/i2c/busses/i2c-xiic.c
+++ b/drivers/i2c/busses/i2c-xiic.c
@@ -39,6 +39,7 @@
 #include <linux/wait.h>
 #include <linux/i2c-xiic.h>
 #include <linux/io.h>
+#include <linux/slab.h>
 
 #define DRIVER_NAME "xiic-i2c"
 
diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c
index cf994bd01d9c..684395b6f3e2 100644
--- a/drivers/i2c/busses/scx200_acb.c
+++ b/drivers/i2c/busses/scx200_acb.c
@@ -31,6 +31,7 @@
 #include <linux/pci.h>
 #include <linux/delay.h>
 #include <linux/mutex.h>
+#include <linux/slab.h>
 #include <asm/io.h>
 
 #include <linux/scx200.h>
diff --git a/drivers/i2c/i2c-boardinfo.c b/drivers/i2c/i2c-boardinfo.c
index a26a34a06641..7e6a63b57165 100644
--- a/drivers/i2c/i2c-boardinfo.c
+++ b/drivers/i2c/i2c-boardinfo.c
@@ -18,6 +18,7 @@
 
 #include <linux/kernel.h>
 #include <linux/i2c.h>
+#include <linux/slab.h>
 #include <linux/rwsem.h>
 
 #include "i2c-core.h"
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 3202a86f420e..c2258a51fe0c 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -40,12 +40,11 @@
 #include "i2c-core.h"
 
 
-/* core_lock protects i2c_adapter_idr, userspace_devices, and guarantees
+/* core_lock protects i2c_adapter_idr, and guarantees
    that device detection, deletion of detected devices, and attach_adapter
    and detach_adapter calls are serialized */
 static DEFINE_MUTEX(core_lock);
 static DEFINE_IDR(i2c_adapter_idr);
-static LIST_HEAD(userspace_devices);
 
 static struct device_type i2c_client_type;
 static int i2c_check_addr(struct i2c_adapter *adapter, int addr);
@@ -117,8 +116,10 @@ static int i2c_device_probe(struct device *dev)
         dev_dbg(dev, "probe\n");
 
         status = driver->probe(client, i2c_match_id(driver->id_table, client));
-        if (status)
+        if (status) {
                 client->driver = NULL;
+                i2c_set_clientdata(client, NULL);
+        }
         return status;
 }
 
@@ -139,8 +140,10 @@ static int i2c_device_remove(struct device *dev)
                 dev->driver = NULL;
                 status = 0;
         }
-        if (status == 0)
+        if (status == 0) {
                 client->driver = NULL;
+                i2c_set_clientdata(client, NULL);
+        }
         return status;
 }
 
@@ -538,9 +541,9 @@ i2c_sysfs_new_device(struct device *dev, struct device_attribute *attr,
                 return -EEXIST;
 
         /* Keep track of the added device */
-        mutex_lock(&core_lock);
-        list_add_tail(&client->detected, &userspace_devices);
-        mutex_unlock(&core_lock);
+        i2c_lock_adapter(adap);
+        list_add_tail(&client->detected, &adap->userspace_clients);
+        i2c_unlock_adapter(adap);
         dev_info(dev, "%s: Instantiated device %s at 0x%02hx\n", "new_device",
                  info.type, info.addr);
 
@@ -579,9 +582,10 @@ i2c_sysfs_delete_device(struct device *dev, struct device_attribute *attr,
 
         /* Make sure the device was added through sysfs */
         res = -ENOENT;
-        mutex_lock(&core_lock);
-        list_for_each_entry_safe(client, next, &userspace_devices, detected) {
-                if (client->addr == addr && client->adapter == adap) {
+        i2c_lock_adapter(adap);
+        list_for_each_entry_safe(client, next, &adap->userspace_clients,
+                                 detected) {
+                if (client->addr == addr) {
                         dev_info(dev, "%s: Deleting device %s at 0x%02hx\n",
                                  "delete_device", client->name, client->addr);
 
@@ -591,7 +595,7 @@ i2c_sysfs_delete_device(struct device *dev, struct device_attribute *attr,
                         break;
                 }
         }
-        mutex_unlock(&core_lock);
+        i2c_unlock_adapter(adap);
 
         if (res < 0)
                 dev_err(dev, "%s: Can't find device in list\n",
@@ -673,6 +677,7 @@ static int i2c_register_adapter(struct i2c_adapter *adap)
         }
 
         rt_mutex_init(&adap->bus_lock);
+        INIT_LIST_HEAD(&adap->userspace_clients);
 
         /* Set default timeout to 1 second if not already set */
         if (adap->timeout == 0)
@@ -875,14 +880,15 @@ int i2c_del_adapter(struct i2c_adapter *adap)
                 return res;
 
         /* Remove devices instantiated from sysfs */
-        list_for_each_entry_safe(client, next, &userspace_devices, detected) {
-                if (client->adapter == adap) {
-                        dev_dbg(&adap->dev, "Removing %s at 0x%x\n",
-                                client->name, client->addr);
-                        list_del(&client->detected);
-                        i2c_unregister_device(client);
-                }
+        i2c_lock_adapter(adap);
+        list_for_each_entry_safe(client, next, &adap->userspace_clients,
+                                 detected) {
+                dev_dbg(&adap->dev, "Removing %s at 0x%x\n", client->name,
+                        client->addr);
+                list_del(&client->detected);
+                i2c_unregister_device(client);
         }
+        i2c_unlock_adapter(adap);
 
         /* Detach any active clients. This can't fail, thus we do not
            checking the returned value. */
@@ -1260,12 +1266,23 @@ static int i2c_detect_address(struct i2c_client *temp_client,
                 return 0;
 
         /* Make sure there is something at this address */
-        if (i2c_smbus_xfer(adapter, addr, 0, 0, 0, I2C_SMBUS_QUICK, NULL) < 0)
-                return 0;
+        if (addr == 0x73 && (adapter->class & I2C_CLASS_HWMON)) {
+                /* Special probe for FSC hwmon chips */
+                union i2c_smbus_data dummy;
 
-        /* Prevent 24RF08 corruption */
-        if ((addr & ~0x0f) == 0x50)
-                i2c_smbus_xfer(adapter, addr, 0, 0, 0, I2C_SMBUS_QUICK, NULL);
+                if (i2c_smbus_xfer(adapter, addr, 0, I2C_SMBUS_READ, 0,
+                                   I2C_SMBUS_BYTE_DATA, &dummy) < 0)
+                        return 0;
+        } else {
+                if (i2c_smbus_xfer(adapter, addr, 0, I2C_SMBUS_WRITE, 0,
+                                   I2C_SMBUS_QUICK, NULL) < 0)
+                        return 0;
+
+                /* Prevent 24RF08 corruption */
+                if ((addr & ~0x0f) == 0x50)
+                        i2c_smbus_xfer(adapter, addr, 0, I2C_SMBUS_WRITE, 0,
+                                       I2C_SMBUS_QUICK, NULL);
+        }
 
         /* Finally call the custom detection function */
         memset(&info, 0, sizeof(struct i2c_board_info));
diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c
index 7a8201ed2181..a24e0bfe9201 100644
--- a/drivers/i2c/i2c-smbus.c
+++ b/drivers/i2c/i2c-smbus.c
@@ -26,6 +26,7 @@
 #include <linux/workqueue.h>
 #include <linux/i2c.h>
 #include <linux/i2c-smbus.h>
+#include <linux/slab.h>
 
 struct i2c_smbus_alert {
         unsigned int            alert_edge_triggered:1;