[lm-sensors] [PATCH] hwmon: (lm90) Use generic i2c reads during detection

[Jean Delvare]

Oops, my patch was actually broken (misplaced parentheses). Here's an
update, sorry.

* * * * *

As indirectly reported by Olof Johansson, the lm90 driver uses a
custom i2c read function even during detection, at which point we
don't know yet what device we're talking with. It would make more
sense to only use the generic i2c read function at this point, so
that we don't log irrelevant errors on misdetection.

Signed-off-by: Jean Delvare <khali at linux-fr.org>
---
 drivers/hwmon/lm90.c |   24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

--- linux-2.6.24-rc3.orig/drivers/hwmon/lm90.c	2007-11-25 11:18:35.000000000 +0100
+++ linux-2.6.24-rc3/drivers/hwmon/lm90.c	2007-11-25 21:37:58.000000000 +0100
@@ -531,24 +531,24 @@ static int lm90_detect(struct i2c_adapte
 		kind = lm90;
 
 	if (kind < 0) { /* detection and identification */
-		u8 man_id, chip_id, reg_config1, reg_convrate;
+		int man_id, chip_id, reg_config1, reg_convrate;
 
-		if (lm90_read_reg(new_client, LM90_REG_R_MAN_ID,
-				  &man_id) < 0
-		 || lm90_read_reg(new_client, LM90_REG_R_CHIP_ID,
-		 		  &chip_id) < 0
-		 || lm90_read_reg(new_client, LM90_REG_R_CONFIG1,
-		 		  &reg_config1) < 0
-		 || lm90_read_reg(new_client, LM90_REG_R_CONVRATE,
-		 		  &reg_convrate) < 0)
+		if ((man_id = i2c_smbus_read_byte_data(new_client,
+						LM90_REG_R_MAN_ID)) < 0
+		 || (chip_id = i2c_smbus_read_byte_data(new_client,
+						LM90_REG_R_CHIP_ID)) < 0
+		 || (reg_config1 = i2c_smbus_read_byte_data(new_client,
+						LM90_REG_R_CONFIG1)) < 0
+		 || (reg_convrate = i2c_smbus_read_byte_data(new_client,
+						LM90_REG_R_CONVRATE)) < 0)
 			goto exit_free;
 		
 		if ((address == 0x4C || address == 0x4D)
 		 && man_id == 0x01) { /* National Semiconductor */
-			u8 reg_config2;
+			int reg_config2;
 
-			if (lm90_read_reg(new_client, LM90_REG_R_CONFIG2,
-					  &reg_config2) < 0)
+			if ((reg_config2 = i2c_smbus_read_byte_data(new_client,
+						LM90_REG_R_CONFIG2)) < 0)
 				goto exit_free;
 
 			if ((reg_config1 & 0x2A) == 0x00


-- 
Jean Delvare