From: Srinivas Pandruvada Date: Tue, 24 Sep 2013 18:05:16 +0000 (-0700) Subject: Thermal: x86_pkg_temp: change spin lock X-Git-Tag: v3.12-rc7~15^2^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7bed1b3caaedd5918f0820b29f3b7a2ddc812922;p=pandora-kernel.git Thermal: x86_pkg_temp: change spin lock x86_pkg_temp receives thermal notifications via a callback from a therm_throt driver, where thermal interrupts are processed. This callback is pkg_temp_thermal_platform_thermal_notify. Here to avoid multiple interrupts from cores in a package, we disable the source and also set a variable to avoid scheduling delayed work function. This variable is protected via spin_lock_irqsave. On one buggy platform, we still receiving interrupts even if the source is disabled. This can cause deadlock/lockdep warning, when interrupt is generated while under spinlock in work function. Change spin_lock to spin_lock_irqsave and spin_unlock to spin_unlock_irqrestore as the data it is trying to protect can also be modified in a notification call called from interrupt handler. Signed-off-by: Srinivas Pandruvada Signed-off-by: Zhang Rui --- Reading git-diff-tree failed