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Input: allocate absinfo data when setting ABS capability

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commit 28a2a2e1aedbe2d8b2301e6e0e4e63f6e4177aca upstream.

We need to make sure we allocate absinfo data when we are setting one of
EV_ABS/ABS_XXX capabilities, otherwise we may bomb when we try to emit this
event.

Rested-by: Paul Cercueil <pcercuei@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dmitry Torokhov
2013-12-26 17:44:29 -08:00
committed by Greg Kroah-Hartman
parent c074c8f4a7
commit 2d8ccbd72d
1 changed files with 4 additions and 0 deletions
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drivers/input/input.c
+4
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@@ -1866,6 +1866,10 @@ void input_set_capability(struct input_dev *dev, unsigned int type, unsigned int
break;
case EV_ABS:
input_alloc_absinfo(dev);
if (!dev->absinfo)
return;
__set_bit(code, dev->absbit);
break;