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Subject[PATCH 1/3] Input: elan_i2c - Do no operation for elan_smbus_set_mode function
Date
Some touchpads might get error while triggerring the set_mode command
in SMBus interface. Do no operation for elan_smbus_set_mode 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 8c3185d54c73..bcb9ec4a7a6b 100644
--- a/drivers/input/mouse/elan_i2c_smbus.c
+++ b/drivers/input/mouse/elan_i2c_smbus.c
@@ -84,10 +84,7 @@ static int elan_smbus_initialize(struct i2c_client *client)

static int elan_smbus_set_mode(struct i2c_client *client, u8 mode)
{
- u8 cmd[4] = { 0x00, 0x07, 0x00, mode };
-
- return i2c_smbus_write_block_data(client, ETP_SMBUS_IAP_CMD,
- sizeof(cmd), cmd);
+ return 0; /* A no-op */
}

static int elan_smbus_sleep_control(struct i2c_client *client, bool sleep)
--
2.17.1
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