[PATCH 6.1 0493/1146] hwmon: (emc2305) fix unable to probe emc2301/2/3

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From: Xingjiang Qiao <nanpuyue@xxxxxxxxx>

[ Upstream commit 4d50591ebf60ccf79380fff3a4c23659c61c482f ]

The definitions of 'EMC2305_REG_PRODUCT_ID' and 'EMC2305_REG_DEVICE' are
both '0xfd', they actually return the same value, but the values returned
by emc2301/2/3/5 are different, so probe emc2301/2/3 will fail, This patch
fixes that.

Signed-off-by: Xingjiang Qiao <nanpuyue@xxxxxxxxx>
Link: https://lore.kernel.org/r/20221206055331.170459-1-nanpuyue@xxxxxxxxx
Fixes: 0d8400c5a2ce1 ("hwmon: (emc2305) add support for EMC2301/2/3/5 RPM-based PWM Fan Speed Controller.")
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/hwmon/emc2305.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/hwmon/emc2305.c b/drivers/hwmon/emc2305.c
index aa1f25add0b6..9a78ca22541e 100644
--- a/drivers/hwmon/emc2305.c
+++ b/drivers/hwmon/emc2305.c
@@ -16,7 +16,6 @@ static const unsigned short
 emc2305_normal_i2c[] = { 0x27, 0x2c, 0x2d, 0x2e, 0x2f, 0x4c, 0x4d, I2C_CLIENT_END };
 
 #define EMC2305_REG_DRIVE_FAIL_STATUS	0x27
-#define EMC2305_REG_DEVICE		0xfd
 #define EMC2305_REG_VENDOR		0xfe
 #define EMC2305_FAN_MAX			0xff
 #define EMC2305_FAN_MIN			0x00
@@ -524,7 +523,7 @@ static int emc2305_probe(struct i2c_client *client, const struct i2c_device_id *
 	struct device *dev = &client->dev;
 	struct emc2305_data *data;
 	struct emc2305_platform_data *pdata;
-	int vendor, device;
+	int vendor;
 	int ret;
 	int i;
 
@@ -535,10 +534,6 @@ static int emc2305_probe(struct i2c_client *client, const struct i2c_device_id *
 	if (vendor != EMC2305_VENDOR)
 		return -ENODEV;
 
-	device = i2c_smbus_read_byte_data(client, EMC2305_REG_DEVICE);
-	if (device != EMC2305_DEVICE)
-		return -ENODEV;
-
 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;
-- 
2.35.1






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