Commit b3e992f6 authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: (jc42) Strengthen detect function 



Configuration register bit 5 must read 0 for all JC42.4 compliant chips.
Several capability register bits must be set for all TSE2004 compliant
chips. Use that information to strengthen the detect function.

Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent c98cf41d

drivers/hwmon/jc42.c

+5 −1
Original line number Diff line number Diff line
@@ -413,7 +413,11 @@ static int jc42_detect(struct i2c_client *client, struct i2c_board_info *info) 
	if (cap < 0 || config < 0 || manid < 0 || devid < 0)

		return -ENODEV;



	if ((cap & 0xff00) || (config & 0xf800))

	if ((cap & 0xff00) || (config & 0xf820))

		return -ENODEV;



	if ((devid & TSE2004_DEVID_MASK) == TSE2004_DEVID &&

	    (cap & 0x00e7) != 0x00e7)

		return -ENODEV;



	for (i = 0; i < ARRAY_SIZE(jc42_chips); i++) {