Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/ke…

…rnel/git/jdelvare/staging

* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  i2c-viapro: Don't log nacks
  i2c/pca954x: Remove __devinit and __devexit from probe and remove functions
  MAINTAINERS: Add maintainer for PCA9541 I2C bus master selector driver
  i2c/mux: Driver for PCA9541 I2C Master Selector
  i2c: Optimize function i2c_detect()
  i2c: Discard warning message on device instantiation from user-space
  i2c-amd8111: Add proper error handling
  i2c: Change to new flag variable
  i2c: Remove unneeded inclusions of <linux/i2c-id.h>
  i2c: Let i2c_parent_is_i2c_adapter return the parent adapter
  i2c: Simplify i2c_parent_is_i2c_adapter
  i2c-pca-platform: Change device name of request_irq
  i2c: Fix Kconfig dependencies

MAINTAINERS

@@ -4541,6 +4541,12 @@ S:	Maintained
 F:	drivers/leds/leds-pca9532.c
 F:	include/linux/leds-pca9532.h
 
+PCA9541 I2C BUS MASTER SELECTOR DRIVER
+M:	Guenter Roeck <guenter.roeck@ericsson.com>
+L:	linux-i2c@vger.kernel.org
+S:	Maintained
+F:	drivers/i2c/muxes/pca9541.c
+
 PCA9564/PCA9665 I2C BUS DRIVER
 M:	Wolfram Sang <w.sang@pengutronix.de>
 L:	linux-i2c@vger.kernel.org

drivers/gpu/drm/nouveau/nouveau_i2c.h

@@ -24,7 +24,6 @@
 #define __NOUVEAU_I2C_H__
 
 #include <linux/i2c.h>
-#include <linux/i2c-id.h>
 #include <linux/i2c-algo-bit.h>
 #include "drm_dp_helper.h"
 

drivers/gpu/drm/radeon/radeon_mode.h

@@ -36,7 +36,6 @@
 #include <drm_dp_helper.h>
 #include <drm_fixed.h>
 #include <linux/i2c.h>
-#include <linux/i2c-id.h>
 #include <linux/i2c-algo-bit.h>
 
 struct radeon_bo;

drivers/i2c/Kconfig

@@ -75,7 +75,8 @@ config I2C_HELPER_AUTO
 	  In doubt, say Y.
 
 config I2C_SMBUS
-	tristate "SMBus-specific protocols" if !I2C_HELPER_AUTO
+	tristate
+	prompt "SMBus-specific protocols" if !I2C_HELPER_AUTO
 	help
 	  Say Y here if you want support for SMBus extensions to the I2C
 	  specification. At the moment, the only supported extension is

drivers/i2c/Makefile

@@ -9,6 +9,4 @@ obj-$(CONFIG_I2C_CHARDEV)	+= i2c-dev.o
 obj-$(CONFIG_I2C_MUX)		+= i2c-mux.o
 obj-y				+= algos/ busses/ muxes/
 
-ifeq ($(CONFIG_I2C_DEBUG_CORE),y)
-EXTRA_CFLAGS += -DDEBUG
-endif
+ccflags-$(CONFIG_I2C_DEBUG_CORE) := -DDEBUG

drivers/i2c/algos/Kconfig

@@ -15,3 +15,15 @@ config I2C_ALGOPCA
 	tristate "I2C PCA 9564 interfaces"
 
 endmenu
+
+# In automatic configuration mode, we still have to define the
+# symbols to avoid unmet dependencies.
+
+if I2C_HELPER_AUTO
+config I2C_ALGOBIT
+	tristate
+config I2C_ALGOPCF
+	tristate
+config I2C_ALGOPCA
+	tristate
+endif

drivers/i2c/algos/Makefile

@@ -6,6 +6,4 @@ obj-$(CONFIG_I2C_ALGOBIT)	+= i2c-algo-bit.o
 obj-$(CONFIG_I2C_ALGOPCF)	+= i2c-algo-pcf.o
 obj-$(CONFIG_I2C_ALGOPCA)	+= i2c-algo-pca.o
 
-ifeq ($(CONFIG_I2C_DEBUG_ALGO),y)
-EXTRA_CFLAGS += -DDEBUG
-endif
+ccflags-$(CONFIG_I2C_DEBUG_ALGO) := -DDEBUG

drivers/i2c/busses/Makefile

@@ -76,6 +76,4 @@ obj-$(CONFIG_I2C_STUB)		+= i2c-stub.o
 obj-$(CONFIG_SCx200_ACB)	+= scx200_acb.o
 obj-$(CONFIG_SCx200_I2C)	+= scx200_i2c.o
 
-ifeq ($(CONFIG_I2C_DEBUG_BUS),y)
-EXTRA_CFLAGS += -DDEBUG
-endif
+ccflags-$(CONFIG_I2C_DEBUG_BUS) := -DDEBUG

drivers/i2c/busses/i2c-amd8111.c

@@ -69,7 +69,7 @@ static struct pci_driver amd8111_driver;
  * ACPI 2.0 chapter 13 access of registers of the EC
  */
 
-static unsigned int amd_ec_wait_write(struct amd_smbus *smbus)
+static int amd_ec_wait_write(struct amd_smbus *smbus)
 {
 	int timeout = 500;
 
@@ -85,7 +85,7 @@ static unsigned int amd_ec_wait_write(struct amd_smbus *smbus)
 	return 0;
 }
 
-static unsigned int amd_ec_wait_read(struct amd_smbus *smbus)
+static int amd_ec_wait_read(struct amd_smbus *smbus)
 {
 	int timeout = 500;
 
@@ -101,7 +101,7 @@ static unsigned int amd_ec_wait_read(struct amd_smbus *smbus)
 	return 0;
 }
 
-static unsigned int amd_ec_read(struct amd_smbus *smbus, unsigned char address,
+static int amd_ec_read(struct amd_smbus *smbus, unsigned char address,
 		unsigned char *data)
 {
 	int status;
@@ -124,7 +124,7 @@ static unsigned int amd_ec_read(struct amd_smbus *smbus, unsigned char address,
 	return 0;
 }
 
-static unsigned int amd_ec_write(struct amd_smbus *smbus, unsigned char address,
+static int amd_ec_write(struct amd_smbus *smbus, unsigned char address,
 		unsigned char data)
 {
 	int status;
@@ -196,7 +196,7 @@ static s32 amd8111_access(struct i2c_adapter * adap, u16 addr,
 {
 	struct amd_smbus *smbus = adap->algo_data;
 	unsigned char protocol, len, pec, temp[2];
-	int i;
+	int i, status;
 
 	protocol = (read_write == I2C_SMBUS_READ) ? AMD_SMB_PRTCL_READ
 						  : AMD_SMB_PRTCL_WRITE;
@@ -209,70 +209,117 @@ static s32 amd8111_access(struct i2c_adapter * adap, u16 addr,
 			break;
 
 		case I2C_SMBUS_BYTE:
-			if (read_write == I2C_SMBUS_WRITE)
-				amd_ec_write(smbus, AMD_SMB_CMD, command);
+			if (read_write == I2C_SMBUS_WRITE) {
+				status = amd_ec_write(smbus, AMD_SMB_CMD,
+						      command);
+				if (status)
+					return status;
+			}
 			protocol |= AMD_SMB_PRTCL_BYTE;
 			break;
 
 		case I2C_SMBUS_BYTE_DATA:
-			amd_ec_write(smbus, AMD_SMB_CMD, command);
-			if (read_write == I2C_SMBUS_WRITE)
-				amd_ec_write(smbus, AMD_SMB_DATA, data->byte);
+			status = amd_ec_write(smbus, AMD_SMB_CMD, command);
+			if (status)
+				return status;
+			if (read_write == I2C_SMBUS_WRITE) {
+				status = amd_ec_write(smbus, AMD_SMB_DATA,
+						      data->byte);
+				if (status)
+					return status;
+			}
 			protocol |= AMD_SMB_PRTCL_BYTE_DATA;
 			break;
 
 		case I2C_SMBUS_WORD_DATA:
-			amd_ec_write(smbus, AMD_SMB_CMD, command);
+			status = amd_ec_write(smbus, AMD_SMB_CMD, command);
+			if (status)
+				return status;
 			if (read_write == I2C_SMBUS_WRITE) {
-				amd_ec_write(smbus, AMD_SMB_DATA,
-					     data->word & 0xff);
-				amd_ec_write(smbus, AMD_SMB_DATA + 1,
-					     data->word >> 8);
+				status = amd_ec_write(smbus, AMD_SMB_DATA,
+						      data->word & 0xff);
+				if (status)
+					return status;
+				status = amd_ec_write(smbus, AMD_SMB_DATA + 1,
+						      data->word >> 8);
+				if (status)
+					return status;
 			}
 			protocol |= AMD_SMB_PRTCL_WORD_DATA | pec;
 			break;
 
 		case I2C_SMBUS_BLOCK_DATA:
-			amd_ec_write(smbus, AMD_SMB_CMD, command);
+			status = amd_ec_write(smbus, AMD_SMB_CMD, command);
+			if (status)
+				return status;
 			if (read_write == I2C_SMBUS_WRITE) {
 				len = min_t(u8, data->block[0],
 					    I2C_SMBUS_BLOCK_MAX);
-				amd_ec_write(smbus, AMD_SMB_BCNT, len);
-				for (i = 0; i < len; i++)
-					amd_ec_write(smbus, AMD_SMB_DATA + i,
-						     data->block[i + 1]);
+				status = amd_ec_write(smbus, AMD_SMB_BCNT, len);
+				if (status)
+					return status;
+				for (i = 0; i < len; i++) {
+					status =
+					  amd_ec_write(smbus, AMD_SMB_DATA + i,
+						       data->block[i + 1]);
+					if (status)
+						return status;
+				}
 			}
 			protocol |= AMD_SMB_PRTCL_BLOCK_DATA | pec;
 			break;
 
 		case I2C_SMBUS_I2C_BLOCK_DATA:
 			len = min_t(u8, data->block[0],
 				    I2C_SMBUS_BLOCK_MAX);
-			amd_ec_write(smbus, AMD_SMB_CMD, command);
-			amd_ec_write(smbus, AMD_SMB_BCNT, len);
+			status = amd_ec_write(smbus, AMD_SMB_CMD, command);
+			if (status)
+				return status;
+			status = amd_ec_write(smbus, AMD_SMB_BCNT, len);
+			if (status)
+				return status;
 			if (read_write == I2C_SMBUS_WRITE)
-				for (i = 0; i < len; i++)
-					amd_ec_write(smbus, AMD_SMB_DATA + i,
-						     data->block[i + 1]);
+				for (i = 0; i < len; i++) {
+					status =
+					  amd_ec_write(smbus, AMD_SMB_DATA + i,
+						       data->block[i + 1]);
+					if (status)
+						return status;
+				}
 			protocol |= AMD_SMB_PRTCL_I2C_BLOCK_DATA;
 			break;
 
 		case I2C_SMBUS_PROC_CALL:
-			amd_ec_write(smbus, AMD_SMB_CMD, command);
-			amd_ec_write(smbus, AMD_SMB_DATA, data->word & 0xff);
-			amd_ec_write(smbus, AMD_SMB_DATA + 1, data->word >> 8);
+			status = amd_ec_write(smbus, AMD_SMB_CMD, command);
+			if (status)
+				return status;
+			status = amd_ec_write(smbus, AMD_SMB_DATA,
+					      data->word & 0xff);
+			if (status)
+				return status;
+			status = amd_ec_write(smbus, AMD_SMB_DATA + 1,
+					      data->word >> 8);
+			if (status)
+				return status;
 			protocol = AMD_SMB_PRTCL_PROC_CALL | pec;
 			read_write = I2C_SMBUS_READ;
 			break;
 
 		case I2C_SMBUS_BLOCK_PROC_CALL:
 			len = min_t(u8, data->block[0],
 				    I2C_SMBUS_BLOCK_MAX - 1);
-			amd_ec_write(smbus, AMD_SMB_CMD, command);
-			amd_ec_write(smbus, AMD_SMB_BCNT, len);
-			for (i = 0; i < len; i++)
-				amd_ec_write(smbus, AMD_SMB_DATA + i,
-					     data->block[i + 1]);
+			status = amd_ec_write(smbus, AMD_SMB_CMD, command);
+			if (status)
+				return status;
+			status = amd_ec_write(smbus, AMD_SMB_BCNT, len);
+			if (status)
+				return status;
+			for (i = 0; i < len; i++) {
+				status = amd_ec_write(smbus, AMD_SMB_DATA + i,
+						      data->block[i + 1]);
+				if (status)
+					return status;
+			}
 			protocol = AMD_SMB_PRTCL_BLOCK_PROC_CALL | pec;
 			read_write = I2C_SMBUS_READ;
 			break;
@@ -282,24 +329,29 @@ static s32 amd8111_access(struct i2c_adapter * adap, u16 addr,
 			return -EOPNOTSUPP;
 	}
 
-	amd_ec_write(smbus, AMD_SMB_ADDR, addr << 1);
-	amd_ec_write(smbus, AMD_SMB_PRTCL, protocol);
+	status = amd_ec_write(smbus, AMD_SMB_ADDR, addr << 1);
+	if (status)
+		return status;
+	status = amd_ec_write(smbus, AMD_SMB_PRTCL, protocol);
+	if (status)
+		return status;
 
-	/* FIXME this discards status from ec_read(); so temp[0] will
-	 * hold stack garbage ... the rest of this routine will act
-	 * nonsensically.  Ignored ec_write() status might explain
-	 * some such failures...
-	 */
-	amd_ec_read(smbus, AMD_SMB_STS, temp + 0);
+	status = amd_ec_read(smbus, AMD_SMB_STS, temp + 0);
+	if (status)
+		return status;
 
 	if (~temp[0] & AMD_SMB_STS_DONE) {
 		udelay(500);
-		amd_ec_read(smbus, AMD_SMB_STS, temp + 0);
+		status = amd_ec_read(smbus, AMD_SMB_STS, temp + 0);
+		if (status)
+			return status;
 	}
 
 	if (~temp[0] & AMD_SMB_STS_DONE) {
 		msleep(1);
-		amd_ec_read(smbus, AMD_SMB_STS, temp + 0);
+		status = amd_ec_read(smbus, AMD_SMB_STS, temp + 0);
+		if (status)
+			return status;
 	}
 
 	if ((~temp[0] & AMD_SMB_STS_DONE) || (temp[0] & AMD_SMB_STS_STATUS))
@@ -311,24 +363,35 @@ static s32 amd8111_access(struct i2c_adapter * adap, u16 addr,
 	switch (size) {
 		case I2C_SMBUS_BYTE:
 		case I2C_SMBUS_BYTE_DATA:
-			amd_ec_read(smbus, AMD_SMB_DATA, &data->byte);
+			status = amd_ec_read(smbus, AMD_SMB_DATA, &data->byte);
+			if (status)
+				return status;
 			break;
 
 		case I2C_SMBUS_WORD_DATA:
 		case I2C_SMBUS_PROC_CALL:
-			amd_ec_read(smbus, AMD_SMB_DATA, temp + 0);
-			amd_ec_read(smbus, AMD_SMB_DATA + 1, temp + 1);
+			status = amd_ec_read(smbus, AMD_SMB_DATA, temp + 0);
+			if (status)
+				return status;
+			status = amd_ec_read(smbus, AMD_SMB_DATA + 1, temp + 1);
+			if (status)
+				return status;
 			data->word = (temp[1] << 8) | temp[0];
 			break;
 
 		case I2C_SMBUS_BLOCK_DATA:
 		case I2C_SMBUS_BLOCK_PROC_CALL:
-			amd_ec_read(smbus, AMD_SMB_BCNT, &len);
+			status = amd_ec_read(smbus, AMD_SMB_BCNT, &len);
+			if (status)
+				return status;
 			len = min_t(u8, len, I2C_SMBUS_BLOCK_MAX);
 		case I2C_SMBUS_I2C_BLOCK_DATA:
-			for (i = 0; i < len; i++)
-				amd_ec_read(smbus, AMD_SMB_DATA + i,
-					    data->block + i + 1);
+			for (i = 0; i < len; i++) {
+				status = amd_ec_read(smbus, AMD_SMB_DATA + i,
+						     data->block + i + 1);
+				if (status)
+					return status;
+			}
 			data->block[0] = len;
 			break;
 	}

drivers/i2c/busses/i2c-ibm_iic.c

@@ -41,7 +41,6 @@
 #include <asm/irq.h>
 #include <linux/io.h>
 #include <linux/i2c.h>
-#include <linux/i2c-id.h>
 #include <linux/of_platform.h>
 #include <linux/of_i2c.h>
 

drivers/i2c/busses/i2c-nuc900.c

@@ -16,7 +16,6 @@
 #include <linux/module.h>
 
 #include <linux/i2c.h>
-#include <linux/i2c-id.h>
 #include <linux/init.h>
 #include <linux/time.h>
 #include <linux/interrupt.h>

drivers/i2c/busses/i2c-pca-platform.c

@@ -224,7 +224,7 @@ static int __devinit i2c_pca_pf_probe(struct platform_device *pdev)
 
 	if (irq) {
 		ret = request_irq(irq, i2c_pca_pf_handler,
-			IRQF_TRIGGER_FALLING, i2c->adap.name, i2c);
+			IRQF_TRIGGER_FALLING, pdev->name, i2c);
 		if (ret)
 			goto e_reqirq;
 	}

drivers/i2c/busses/i2c-pxa.c

@@ -22,7 +22,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/i2c.h>
-#include <linux/i2c-id.h>
 #include <linux/init.h>
 #include <linux/time.h>
 #include <linux/sched.h>

drivers/i2c/busses/i2c-s3c2410.c

@@ -24,7 +24,6 @@
 #include <linux/module.h>
 
 #include <linux/i2c.h>
-#include <linux/i2c-id.h>
 #include <linux/init.h>
 #include <linux/time.h>
 #include <linux/interrupt.h>