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authorPeter Korsgaard <jacmet@sunsite.dk>2011-02-25 20:30:46 +0300
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2011-02-27 12:52:53 +0300
commit439581ec07fa9cf3f519dd461a2cf41cfd3adcb4 (patch)
tree204e640e88005bfcda1176d28ecc9325fbf57ad3 /arch/arm/mach-s5pv310/mach-universal_c210.c
parent5063511539bbb436ae8e4f75409561ef547f8516 (diff)
downloadlinux-439581ec07fa9cf3f519dd461a2cf41cfd3adcb4.tar.xz
Input: evdev - fix evdev_write return value on partial writes
As was recently brought up on the busybox list (http://lists.busybox.net/pipermail/busybox/2011-January/074565.html), evdev_write doesn't properly check the count argument, which will lead to a return value > count on partial writes if the remaining bytes are accessible - causing userspace confusion. Fix it by only handling each full input_event structure and return -EINVAL if less than 1 struct was written, similar to how it is done in evdev_read. Reported-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Acked-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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