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authorDavid Herrmann <dh.herrmann@googlemail.com>2011-10-08 23:20:17 +0200
committerJiri Kosina <jkosina@suse.cz>2011-10-08 23:20:17 +0200
commit3797ef6b6bc041755318917855d63879679c6dd9 (patch)
tree99ed2c53cd3caa16a131309fc222f93b82a0bf94 /drivers/hid
parentf554ff80339b4005856e6a86454d6ea2bb962ee5 (diff)
downloadlinux-3797ef6b6bc041755318917855d63879679c6dd9.tar.bz2
HID: wacom: Set input bits before registration
We shouldn't change the event flags of input devices after they get registered. Otherwise, udev will not get notified of these flags and cannot setup the devices properly. This fixes the probing to set the input event flags on the input_mapped callback instead of the probe function. Reported-by: Bastien Nocera <hadess@hadess.net> Signed-off-by: David Herrmann <dh.herrmann@googlemail.com> Tested-by: Bastien Nocera <hadess@hadess.net> Signed-off-by: Bastien Nocera <hadess@hadess.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-wacom.c76
1 files changed, 41 insertions, 35 deletions
diff --git a/drivers/hid/hid-wacom.c b/drivers/hid/hid-wacom.c
index a597039d0755..519f56c787bb 100644
--- a/drivers/hid/hid-wacom.c
+++ b/drivers/hid/hid-wacom.c
@@ -304,11 +304,49 @@ static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
return 1;
}
+static int wacom_input_mapped(struct hid_device *hdev, struct hid_input *hi,
+ struct hid_field *field, struct hid_usage *usage, unsigned long **bit,
+ int *max)
+{
+ struct input_dev *input = hi->input;
+
+ /* Basics */
+ input->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_REL);
+
+ __set_bit(REL_WHEEL, input->relbit);
+
+ __set_bit(BTN_TOOL_PEN, input->keybit);
+ __set_bit(BTN_TOUCH, input->keybit);
+ __set_bit(BTN_STYLUS, input->keybit);
+ __set_bit(BTN_STYLUS2, input->keybit);
+ __set_bit(BTN_LEFT, input->keybit);
+ __set_bit(BTN_RIGHT, input->keybit);
+ __set_bit(BTN_MIDDLE, input->keybit);
+
+ /* Pad */
+ input->evbit[0] |= BIT(EV_MSC);
+
+ __set_bit(MSC_SERIAL, input->mscbit);
+
+ __set_bit(BTN_0, input->keybit);
+ __set_bit(BTN_1, input->keybit);
+ __set_bit(BTN_TOOL_FINGER, input->keybit);
+
+ /* Distance, rubber and mouse */
+ __set_bit(BTN_TOOL_RUBBER, input->keybit);
+ __set_bit(BTN_TOOL_MOUSE, input->keybit);
+
+ input_set_abs_params(input, ABS_X, 0, 16704, 4, 0);
+ input_set_abs_params(input, ABS_Y, 0, 12064, 4, 0);
+ input_set_abs_params(input, ABS_PRESSURE, 0, 511, 0, 0);
+ input_set_abs_params(input, ABS_DISTANCE, 0, 32, 0, 0);
+
+ return 0;
+}
+
static int wacom_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
- struct hid_input *hidinput;
- struct input_dev *input;
struct wacom_data *wdata;
int ret;
@@ -370,39 +408,6 @@ static int wacom_probe(struct hid_device *hdev,
goto err_ac;
}
#endif
- hidinput = list_entry(hdev->inputs.next, struct hid_input, list);
- input = hidinput->input;
-
- /* Basics */
- input->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_REL);
-
- __set_bit(REL_WHEEL, input->relbit);
-
- __set_bit(BTN_TOOL_PEN, input->keybit);
- __set_bit(BTN_TOUCH, input->keybit);
- __set_bit(BTN_STYLUS, input->keybit);
- __set_bit(BTN_STYLUS2, input->keybit);
- __set_bit(BTN_LEFT, input->keybit);
- __set_bit(BTN_RIGHT, input->keybit);
- __set_bit(BTN_MIDDLE, input->keybit);
-
- /* Pad */
- input->evbit[0] |= BIT(EV_MSC);
-
- __set_bit(MSC_SERIAL, input->mscbit);
-
- __set_bit(BTN_0, input->keybit);
- __set_bit(BTN_1, input->keybit);
- __set_bit(BTN_TOOL_FINGER, input->keybit);
-
- /* Distance, rubber and mouse */
- __set_bit(BTN_TOOL_RUBBER, input->keybit);
- __set_bit(BTN_TOOL_MOUSE, input->keybit);
-
- input_set_abs_params(input, ABS_X, 0, 16704, 4, 0);
- input_set_abs_params(input, ABS_Y, 0, 12064, 4, 0);
- input_set_abs_params(input, ABS_PRESSURE, 0, 511, 0, 0);
- input_set_abs_params(input, ABS_DISTANCE, 0, 32, 0, 0);
return 0;
@@ -446,6 +451,7 @@ static struct hid_driver wacom_driver = {
.probe = wacom_probe,
.remove = wacom_remove,
.raw_event = wacom_raw_event,
+ .input_mapped = wacom_input_mapped,
};
static int __init wacom_init(void)