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authorPallipadi, Venkatesh <venkatesh.pallipadi@intel.com>2009-07-29 13:36:10 -0700
committerDave Jones <davej@redhat.com>2009-08-04 14:32:10 -0400
commit26d204afa18f7df177f21bdb3759e0098ca8f7d5 (patch)
tree5446fa9688d2df4608314ec6772a5d6da3e97438 /tools/perf
parenta33a052f19a21d727847391c8c1aff3fb221c472 (diff)
downloadop-kernel-dev-26d204afa18f7df177f21bdb3759e0098ca8f7d5.zip
op-kernel-dev-26d204afa18f7df177f21bdb3759e0098ca8f7d5.tar.gz
[CPUFREQ] Fix NULL pointer dereference regression in conservative governor
Commit ee88415caf736b89500f16e0a545614541a45005 introduced this regression when it removed enable bit in cpu_dbs_info_s. That added a possibility of dbs_cpufreq_notifier getting called for a CPU that is not yet managed by conservative governor. That will happen as the transition notifier is set as soon as one CPU switches to conservative governor and other CPUs can get a NULL pointer dereference without the enable bit check. Add the enable bit back again. Reported-by: Lermytte Christophe <Christophe.Lermytte@thomson.net> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Dave Jones <davej@redhat.com>
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