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authorHenrik Rydberg <rydberg@euromail.se>2012-09-15 15:15:58 +0200
committerHenrik Rydberg <rydberg@euromail.se>2012-09-19 19:50:17 +0200
commit8d18fba282120a4a8e4416d1202522ffae8cad58 (patch)
tree22e3ddabba314c9ad544b9fefe004194205c2940 /drivers/input/evdev.c
parent4cbe5a555fa58a79b6ecbb6c531b8bab0650778d (diff)
downloadlinux-8d18fba282120a4a8e4416d1202522ffae8cad58.tar.bz2
Input: Break out MT data
Move all MT-related things to a separate place. This saves some bytes for non-mt input devices, and prepares for new MT features. Reviewed-and-tested-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Tested-by: Ping Cheng <pingc@wacom.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Diffstat (limited to 'drivers/input/evdev.c')
-rw-r--r--drivers/input/evdev.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index 6c58bfff01a3..a0692c551be5 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -653,20 +653,22 @@ static int evdev_handle_mt_request(struct input_dev *dev,
unsigned int size,
int __user *ip)
{
- const struct input_mt_slot *mt = dev->mt;
+ const struct input_mt *mt = dev->mt;
unsigned int code;
int max_slots;
int i;
if (get_user(code, &ip[0]))
return -EFAULT;
- if (!input_is_mt_value(code))
+ if (!mt || !input_is_mt_value(code))
return -EINVAL;
max_slots = (size - sizeof(__u32)) / sizeof(__s32);
- for (i = 0; i < dev->mtsize && i < max_slots; i++)
- if (put_user(input_mt_get_value(&mt[i], code), &ip[1 + i]))
+ for (i = 0; i < mt->num_slots && i < max_slots; i++) {
+ int value = input_mt_get_value(&mt->slots[i], code);
+ if (put_user(value, &ip[1 + i]))
return -EFAULT;
+ }
return 0;
}