Messages in this thread Patch in this message | | | Date | Tue, 29 Mar 2011 14:48:26 +0200 | From | Heinz Graalfs <> | Subject | [patch 1/1] Do not unregister_cpu_notifier in case of wrong state |
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From: Heinz Graalfs <graalfs@linux.vnet.ibm.com>
This patch avoids calling unregister_cpu_notifier() in case hwsampler_shutdown() is invoked in wrong state. --- arch/s390/oprofile/hwsampler.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
Index: 2.6.39/arch/s390/oprofile/hwsampler.c =================================================================== --- 2.6.39.orig/arch/s390/oprofile/hwsampler.c +++ 2.6.39/arch/s390/oprofile/hwsampler.c @@ -1143,11 +1143,14 @@ int hwsampler_shutdown() unregister_external_interrupt(0x1407, hws_ext_handler); hws_state = HWS_INIT; + + mutex_unlock(&hws_sem); + unregister_cpu_notifier(&hws_cpu_notifier); + rc = 0; + } else { + mutex_unlock(&hws_sem); } - mutex_unlock(&hws_sem); - - unregister_cpu_notifier(&hws_cpu_notifier); return rc; }
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