This moves basic checks and setup from uinput_setup_device() into
uinput_validate_absbits() to make it easier to use. This way, we can call
it from other places without copying the boilerplate code.
Reviewed-by: Peter Hutterer <peter.hutte...@who-t.net>
Signed-off-by: David Herrmann <dh.herrm...@gmail.com>
---
drivers/input/misc/uinput.c | 40 +++++++++++++++++++++-------------------
1 file changed, 21 insertions(+), 19 deletions(-)
diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
index 8569362..615324c 100644
--- a/drivers/input/misc/uinput.c
+++ b/drivers/input/misc/uinput.c
@@ -311,7 +311,13 @@ static int uinput_open(struct inode *inode, struct file
*file)
static int uinput_validate_absbits(struct input_dev *dev)
{
unsigned int cnt;
- int retval = 0;
+ int nslot;
+
+ if (!test_bit(EV_ABS, dev->evbit))
+ return 0;
+
+ /* check if absmin/absmax/absfuzz/absflat are filled as
+ * told in Documentation/input/input-programming.txt */
for (cnt = 0; cnt < ABS_CNT; cnt++) {
int min, max;
@@ -327,8 +333,7 @@ static int uinput_validate_absbits(struct input_dev *dev)
UINPUT_NAME, cnt,
input_abs_get_min(dev, cnt),
input_abs_get_max(dev, cnt));
- retval = -EINVAL;
- break;
+ return -EINVAL;
}
if (input_abs_get_flat(dev, cnt) >
@@ -340,11 +345,18 @@ static int uinput_validate_absbits(struct input_dev *dev)
input_abs_get_flat(dev, cnt),
input_abs_get_min(dev, cnt),
input_abs_get_max(dev, cnt));
- retval = -EINVAL;
- break;
+ return -EINVAL;
}
}
- return retval;
+
+ if (test_bit(ABS_MT_SLOT, dev->absbit)) {
+ nslot = input_abs_get_max(dev, ABS_MT_SLOT) + 1;
+ input_mt_init_slots(dev, nslot, 0);
+ } else if (test_bit(ABS_MT_POSITION_X, dev->absbit)) {
+ input_set_events_per_packet(dev, 60);
+ }
+
+ return 0;
}
static int uinput_allocate_device(struct uinput_device *udev)
@@ -410,19 +422,9 @@ static int uinput_setup_device(struct uinput_device *udev,
input_abs_set_flat(dev, i, user_dev->absflat[i]);
}
- /* check if absmin/absmax/absfuzz/absflat are filled as
- * told in Documentation/input/input-programming.txt */
- if (test_bit(EV_ABS, dev->evbit)) {
- retval = uinput_validate_absbits(dev);
- if (retval < 0)
- goto exit;
- if (test_bit(ABS_MT_SLOT, dev->absbit)) {
- int nslot = input_abs_get_max(dev, ABS_MT_SLOT) + 1;
- input_mt_init_slots(dev, nslot, 0);
- } else if (test_bit(ABS_MT_POSITION_X, dev->absbit)) {
- input_set_events_per_packet(dev, 60);
- }
- }
+ retval = uinput_validate_absbits(dev);
+ if (retval < 0)
+ goto exit;
udev->state = UIST_SETUP_COMPLETE;
retval = count;
--
2.0.2
--
To unsubscribe from this list: send the line "unsubscribe linux-input" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
