On Fri, Sep 22, 2017 at 01:50:36PM +0800, KT Liao wrote:
> Original 20ms delay is a margin timing after a block writing
> in FW update flow.
>
> Sometimes it will cause fail during FW-updating if I2C timing delay.
> We offten see this issue in rockchip's I2C host.
>
> Extend the delay timing is the safest way to improve it.
>
> Signed-off-by: KT Liao <[email protected]>
Applied, thank you.
> ---
> drivers/input/mouse/elan_i2c_i2c.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/input/mouse/elan_i2c_i2c.c
> b/drivers/input/mouse/elan_i2c_i2c.c
> index 80172f2..4db376c 100644
> --- a/drivers/input/mouse/elan_i2c_i2c.c
> +++ b/drivers/input/mouse/elan_i2c_i2c.c
> @@ -587,7 +587,7 @@ static int elan_i2c_write_fw_block(struct i2c_client
> *client,
> }
>
> /* Wait for F/W to update one page ROM data. */
> - msleep(20);
> + msleep(35);
>
> error = elan_i2c_read_cmd(client, ETP_I2C_IAP_CTRL_CMD, val);
> if (error) {
> --
> 2.7.4
>
--
Dmitry
