From a876697b0ad1cba4d56c72395b330691aafa1593 Mon Sep 17 00:00:00 2001 From: Jeff LaBundy Date: Sun, 9 Jun 2019 10:16:51 -0700 Subject: Input: iqs5xx - get axis info before calling input_mt_init_slots() Calling input_mt_init_slots() copies ABS_MT_POSITION_X to ABS_X and so on, but doing so before calling touchscreen_parse_properties() leaves ABS_X min = max = 0 which may prompt an X server to ignore the device. To solve this problem, wait to call input_mt_init_slots() until all absolute axis information has been resolved (whether that's through device tree via touchscreen_parse_properties() or from reading from the device directly). Signed-off-by: Jeff LaBundy Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/iqs5xx.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) (limited to 'drivers/input') diff --git a/drivers/input/touchscreen/iqs5xx.c b/drivers/input/touchscreen/iqs5xx.c index b832fe062645..4f6fe8cc8efa 100644 --- a/drivers/input/touchscreen/iqs5xx.c +++ b/drivers/input/touchscreen/iqs5xx.c @@ -502,14 +502,6 @@ static int iqs5xx_axis_init(struct i2c_client *client) input_set_capability(input, EV_ABS, ABS_MT_POSITION_Y); input_set_capability(input, EV_ABS, ABS_MT_PRESSURE); - error = input_mt_init_slots(input, - IQS5XX_NUM_CONTACTS, INPUT_MT_DIRECT); - if (error) { - dev_err(&client->dev, - "Failed to initialize slots: %d\n", error); - return error; - } - input_set_drvdata(input, iqs5xx); iqs5xx->input = input; } @@ -591,9 +583,19 @@ static int iqs5xx_axis_init(struct i2c_client *client) if (error) return error; - return iqs5xx_write_word(client, - prop.swap_x_y ? IQS5XX_X_RES : IQS5XX_Y_RES, - max_y); + error = iqs5xx_write_word(client, + prop.swap_x_y ? IQS5XX_X_RES : IQS5XX_Y_RES, + max_y); + if (error) + return error; + + error = input_mt_init_slots(iqs5xx->input, IQS5XX_NUM_CONTACTS, + INPUT_MT_DIRECT); + if (error) + dev_err(&client->dev, "Failed to initialize slots: %d\n", + error); + + return error; } static int iqs5xx_dev_init(struct i2c_client *client) -- cgit v1.2.3