Commit ad3273be authored Oct 17, 2008 by Jean Delvare Committed by Jean Delvare Oct 17, 2008

hwmon: (lm78) Prevent misdetection of Winbond chips



The LM78 detection is relatively weak, and sometimes recent Winbond
chips can be misdetected as an LM78. We have had repeated reports of
this happening. We have an explicit check against this for the ISA
access, do the same for I2C access now.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

parent 18c73f90

drivers/hwmon/lm78.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -613,6 +613,12 @@ static int lm78_detect(struct i2c_adapter *adapter, int address, int kind)
		err = -ENODEV;
		goto ERROR2;
		}
		/* Explicitly prevent the misdetection of Winbond chips */
		i = lm78_read_value(data, 0x4f);
		if (i == 0xa3 \|\| i == 0x5c) {
		err = -ENODEV;
		goto ERROR2;
		}
		}

		/* Determine the chip type. */

Admin message