[PATCH 1/1] Input: joydev - fix axes values sent in initial js_event

[Vojtech Bocek]

Initial input ABS events can't reach joydev because it is not
opened yet.
This patch makes joydev reload ABS values on joydev_open_device.

Signed-off-by: Vojtech Bocek <vbocek@xxxxxxxxx>
---
 drivers/input/joydev.c |   16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/input/joydev.c b/drivers/input/joydev.c
index f362883..f53a7b1 100644
--- a/drivers/input/joydev.c
+++ b/drivers/input/joydev.c
@@ -156,6 +156,18 @@ static void joydev_event(struct input_handle *handle,
 	wake_up_interruptible(&joydev->wait);
 }

+/* joydev must be locked */
+static void joydev_reload_abs(struct joydev *joydev)
+{
+	int i, abs;
+	struct input_dev *input = joydev->handle.dev;
+
+	for (i = 0; i < joydev->nabs; ++i) {
+		abs = input_abs_get_val(input, joydev->abspam[i]);
+		joydev->abs[i] = joydev_correct(abs, &joydev->corr[i]);
+	}
+}
+
 static int joydev_fasync(int fd, struct file *file, int on)
 {
 	struct joydev_client *client = file->private_data;
@@ -200,7 +212,9 @@ static int joydev_open_device(struct joydev *joydev)
 		retval = -ENODEV;
 	else if (!joydev->open++) {
 		retval = input_open_device(&joydev->handle);
-		if (retval)
+		if (!retval)
+			joydev_reload_abs(joydev);
+		else
 			joydev->open--;
 	}

-- 
1.7.10.4
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