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(parent: 4645690) | patch
Input: evdev - properly handle read/write with count 0
authorDmitry Torokhov <dmitry.torokhov@gmail.com>
Wed, 2 May 2012 07:13:37 +0000 (00:13 -0700)
committerDmitry Torokhov <dmitry.torokhov@gmail.com>
Wed, 2 May 2012 07:23:58 +0000 (00:23 -0700)
commitf303bd93f9fcebef834af7473c89a575e96a2b6b
tree613f1456fe437419bbc014f84d7d3c2e73568743tree | snapshot
parent4645690bab524a42e2e32e6da66e3f1c74e492d0commit | diff
Input: evdev - properly handle read/write with count 0

According to the standard count 0 is special - no IO should happen but we
can check error conditions (device gone away, etc), and return 0 if there
are no errors. We used to return -EINVAL instead and we also could return 0
if an event was "stolen" by another thread.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
drivers/input/evdev.c diff | blob | history
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