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Subject[PATCH 2/3] Input: elan_i2c - Do no operation for elan_smbus_sleep_control function
Date
Some touchpads might get error while triggerring the sleep_control
command in SMBus interface. Do no operation for elan_smbus_sleep_control
function.

Signed-off-by: Dave Wang <dave.wang@emc.com.tw>
---
drivers/input/mouse/elan_i2c_smbus.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/input/mouse/elan_i2c_smbus.c b/drivers/input/mouse/elan_i2c_smbus.c
index bcb9ec4a7a6b..9ffb1f834507 100644
--- a/drivers/input/mouse/elan_i2c_smbus.c
+++ b/drivers/input/mouse/elan_i2c_smbus.c
@@ -89,10 +89,7 @@ static int elan_smbus_set_mode(struct i2c_client *client, u8 mode)

static int elan_smbus_sleep_control(struct i2c_client *client, bool sleep)
{
- if (sleep)
- return i2c_smbus_write_byte(client, ETP_SMBUS_SLEEP_CMD);
- else
- return 0; /* XXX should we send ETP_SMBUS_ENABLE_TP here? */
+ return 0; /* A no-op */
}

static int elan_smbus_power_control(struct i2c_client *client, bool enable)
--
2.17.1
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