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authorOhad Ben-Cohen <ohad@wizery.com>2012-06-07 15:39:35 +0300
committerOhad Ben-Cohen <ohad@wizery.com>2012-07-04 11:51:59 +0300
commit15fd943af50dbc5f7f4de33835795c72595f7bf4 (patch)
treeb35e37da3edf0b0166f14cf1d71e665d506b7fdf /MAINTAINERS
parent5a081caa0414b9bbb82c17ffab9d6fe66edbb72f (diff)
rpmsg: make sure inflight messages don't invoke just-removed callbacks
When inbound messages arrive, rpmsg core looks up their associated endpoint (by destination address) and then invokes their callback. We've made sure that endpoints will never be de-allocated after they were found by rpmsg core, but we also need to protect against the (rare) scenario where the rpmsg driver was just removed, and its callback function isn't available anymore. This is achieved by introducing a callback mutex, which must be taken before the callback is invoked, and, obviously, before it is removed. Cc: stable <stable@vger.kernel.org> Reported-by: Fernando Guzman Lugo <fernando.lugo@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
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