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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2017-04-04 02:54:04 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2018-02-03 04:04:08 +0300 |
| commit | cdc2466df40f26af60f6b18123069bd52336a80c (patch) | |
| tree | 03e0d37af07fc8d71837bf1aa0091595173c4bff /drivers/input | |
| parent | 29aa619408adc1f88745feed02265acfbc0b8fea (diff) | |
| download | linux-cdc2466df40f26af60f6b18123069bd52336a80c.tar.xz | |
Input: synaptics - handle errors from input_mt_init_slots()
input_mt_init_slots() may fail, we need to handle this condition.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/mouse/synaptics.c | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index feb9c04d0eae..dcb8e0cfaa1a 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -1228,12 +1228,13 @@ static void set_abs_position_params(struct input_dev *dev, input_abs_set_res(dev, y_code, info->y_res); } -static void set_input_params(struct psmouse *psmouse, - struct synaptics_data *priv) +static int set_input_params(struct psmouse *psmouse, + struct synaptics_data *priv) { struct input_dev *dev = psmouse->dev; struct synaptics_device_info *info = &priv->info; int i; + int error; /* Reset default psmouse capabilities */ __clear_bit(EV_REL, dev->evbit); @@ -1256,7 +1257,7 @@ static void set_input_params(struct psmouse *psmouse, /* Relative mode */ input_set_capability(dev, EV_REL, REL_X); input_set_capability(dev, EV_REL, REL_Y); - return; + return 0; } /* Absolute mode */ @@ -1271,7 +1272,11 @@ static void set_input_params(struct psmouse *psmouse, ABS_MT_POSITION_X, ABS_MT_POSITION_Y); /* Image sensors can report per-contact pressure */ input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); - input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK); + + error = input_mt_init_slots(dev, 2, + INPUT_MT_POINTER | INPUT_MT_TRACK); + if (error) + return error; /* Image sensors can signal 4 and 5 finger clicks */ input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP); @@ -1283,10 +1288,13 @@ static void set_input_params(struct psmouse *psmouse, * Profile sensor in CR-48 tracks contacts reasonably well, * other non-image sensors with AGM use semi-mt. */ - input_mt_init_slots(dev, 2, - INPUT_MT_POINTER | - (cr48_profile_sensor ? - INPUT_MT_TRACK : INPUT_MT_SEMI_MT)); + error = input_mt_init_slots(dev, 2, + INPUT_MT_POINTER | + (cr48_profile_sensor ? + INPUT_MT_TRACK : + INPUT_MT_SEMI_MT)); + if (error) + return error; /* * For semi-mt devices we send ABS_X/Y ourselves instead of @@ -1326,6 +1334,8 @@ static void set_input_params(struct psmouse *psmouse, !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); } + + return 0; } static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, @@ -1563,7 +1573,12 @@ static int synaptics_init_ps2(struct psmouse *psmouse, info->capabilities, info->ext_cap, info->ext_cap_0c, info->ext_cap_10, info->board_id, info->firmware_id); - set_input_params(psmouse, priv); + err = set_input_params(psmouse, priv); + if (err) { + psmouse_err(psmouse, + "failed to set up capabilities: %d\n", err); + goto init_fail; + } /* * Encode touchpad model so that it can be used to set |