Revert "write to system"

This reverts commit ed156c6ed1367a01f8e4d9e2312bb39ce2058e53.
Revert "Revert "fail""

This reverts commit 56d0e703be36d8a4dd5b04577dd8de200d9ac63a.
Revert "fail"

This reverts commit c89560a959154a05a403102258d8c5d4ac8cbe27.
Revert "upstream to 3.4.11 from kernel.org"

This reverts commit f51693265d29e037c627717708fb305c18ad5c3a.
write to system