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authorRussell King <rmk+kernel@arm.linux.org.uk>2010-05-17 17:24:04 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-05-17 17:24:04 +0100
commitac1d426e825ab5778995f2f6f053ca2e6b45c622 (patch)
tree75b91356ca39463e0112931aa6790802fb1e07a2 /drivers/i2c
parentfda0e18c8a7a3e02747c2b045b4fcd2c920410b9 (diff)
parenta3685f00652af83f12b63e3b4ef48f29581ba48b (diff)
downloadop-kernel-dev-ac1d426e825ab5778995f2f6f053ca2e6b45c622.zip
op-kernel-dev-ac1d426e825ab5778995f2f6f053ca2e6b45c622.tar.gz
Merge branch 'devel-stable' into devel
Conflicts: arch/arm/Kconfig arch/arm/include/asm/system.h arch/arm/mm/Kconfig
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/algos/i2c-algo-bit.c1
-rw-r--r--drivers/i2c/algos/i2c-algo-pcf.c1
-rw-r--r--drivers/i2c/busses/i2c-amd8111.c1
-rw-r--r--drivers/i2c/busses/i2c-bfin-twi.c1
-rw-r--r--drivers/i2c/busses/i2c-davinci.c1
-rw-r--r--drivers/i2c/busses/i2c-designware.c1
-rw-r--r--drivers/i2c/busses/i2c-elektor.c1
-rw-r--r--drivers/i2c/busses/i2c-gpio.c1
-rw-r--r--drivers/i2c/busses/i2c-highlander.c1
-rw-r--r--drivers/i2c/busses/i2c-imx.c7
-rw-r--r--drivers/i2c/busses/i2c-ixp2000.c1
-rw-r--r--drivers/i2c/busses/i2c-mpc.c1
-rw-r--r--drivers/i2c/busses/i2c-mv64xxx.c1
-rw-r--r--drivers/i2c/busses/i2c-nforce2.c1
-rw-r--r--drivers/i2c/busses/i2c-nomadik.c1
-rw-r--r--drivers/i2c/busses/i2c-ocores.c1
-rw-r--r--drivers/i2c/busses/i2c-octeon.c5
-rw-r--r--drivers/i2c/busses/i2c-omap.c11
-rw-r--r--drivers/i2c/busses/i2c-parport.c1
-rw-r--r--drivers/i2c/busses/i2c-pasemi.c1
-rw-r--r--drivers/i2c/busses/i2c-pnx.c9
-rw-r--r--drivers/i2c/busses/i2c-pxa.c1
-rw-r--r--drivers/i2c/busses/i2c-s3c2410.c1
-rw-r--r--drivers/i2c/busses/i2c-scmi.c32
-rw-r--r--drivers/i2c/busses/i2c-sh_mobile.c1
-rw-r--r--drivers/i2c/busses/i2c-simtec.c1
-rw-r--r--drivers/i2c/busses/i2c-stu300.c3
-rw-r--r--drivers/i2c/busses/i2c-tiny-usb.c1
-rw-r--r--drivers/i2c/busses/i2c-versatile.c1
-rw-r--r--drivers/i2c/busses/i2c-xiic.c1
-rw-r--r--drivers/i2c/busses/scx200_acb.c1
-rw-r--r--drivers/i2c/i2c-boardinfo.c1
-rw-r--r--drivers/i2c/i2c-core.c63
-rw-r--r--drivers/i2c/i2c-smbus.c1
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 e8d568c..a39e6cf 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 6b6bd06..5eebf56 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 d0dc970..2fbef27 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 fe3fb56..f1e14dd 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 c89687a..4523364 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 3e72b69..b664ed8 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 448b4bf..6122556 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 32104ea..c21077d 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 87ecace..ce87a90 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 32375bd..d1ff940 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 c016f7a..5d8aed5 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 78a15af..f1321f7 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 ed387ff..3623a44 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 4a70058..4a48dd4 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 a15f731..a4f8d33 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 0dabe64..b4ed4ca 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 6037550..0e9f85d 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 c7c23753..389ac60 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 220fca7..846583e 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 0d20ff4..d3d4a4b 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 9532dee..a97e3fe 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 90ffbf6..14d249f 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 1d8c986..d27072b 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 365e0be..388cbdc 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 ccc4641..ffb405d 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 6407f47..78b0610 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 d2728a2..495be45 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 b5b1bbf..d03b040 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 70de821..5c47383 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 f0ef8da..a9c419e 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 cf994bd..684395b 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 a26a34a..7e6a63b 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 3202a86..c2258a5 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 7a8201e..a24e0bf 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;
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