James, this patch is not picked up for 3.5. Request you to push this patch for next release. Regards, Nagalakshmi -----Original Message----- From: nagalakshmi.nandigama@xxxxxxx [mailto:nagalakshmi.nandigama@xxxxxxx] Sent: Tuesday, April 17, 2012 11:25 AM To: stable@xxxxxxxxxxxxxxx; linux-scsi@xxxxxxxxxxxxxxx; Nandigama, Nagalakshmi; Prakash, Sathya; Moore, Eric Cc: jejb@xxxxxxxxxx Subject: [PATCH] [SCSI] mpt2sas : Fix unsafe using smp_processor_id() in preemptible When CONFIG_DEBUG_PREEMPT is enabled, bug is observed in the smp_processor_id(). This is because smp_processor_id() is not called in preempt safe condition. To fix this issue, use raw_smp_processor_id instead of smp_processor_id. Signed-off-by: Nagalakshmi Nandigama <nagalakshmi.nandigama@xxxxxxx> CC: stable@xxxxxxxxxxxxxxx --- diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c index 272fab7..b010be0 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_base.c +++ b/drivers/scsi/mpt2sas/mpt2sas_base.c @@ -1792,7 +1792,7 @@ static inline void _base_writeq(__u64 b, volatile void __iomem *addr, static inline u8 _base_get_msix_index(struct MPT2SAS_ADAPTER *ioc) { - return ioc->cpu_msix_table[smp_processor_id()]; + return ioc->cpu_msix_table[raw_smp_processor_id()]; } /** -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
