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path: root/drivers/scsi/mpt2sas/mpt2sas_base.c
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Diffstat (limited to 'drivers/scsi/mpt2sas/mpt2sas_base.c')
-rw-r--r--drivers/scsi/mpt2sas/mpt2sas_base.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c
index 6dec7cff316f..c167911221e9 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.c
@@ -112,9 +112,12 @@ _scsih_set_fwfault_debug(const char *val, struct kernel_param *kp)
if (ret)
return ret;
+ /* global ioc spinlock to protect controller list on list operations */
printk(KERN_INFO "setting fwfault_debug(%d)\n", mpt2sas_fwfault_debug);
+ spin_lock(&gioc_lock);
list_for_each_entry(ioc, &mpt2sas_ioc_list, list)
ioc->fwfault_debug = mpt2sas_fwfault_debug;
+ spin_unlock(&gioc_lock);
return 0;
}
@@ -4437,6 +4440,8 @@ mpt2sas_base_free_resources(struct MPT2SAS_ADAPTER *ioc)
dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
__func__));
+ /* synchronizing freeing resource with pci_access_mutex lock */
+ mutex_lock(&ioc->pci_access_mutex);
if (ioc->chip_phys && ioc->chip) {
_base_mask_interrupts(ioc);
ioc->shost_recovery = 1;
@@ -4456,6 +4461,7 @@ mpt2sas_base_free_resources(struct MPT2SAS_ADAPTER *ioc)
pci_disable_pcie_error_reporting(pdev);
pci_disable_device(pdev);
}
+ mutex_unlock(&ioc->pci_access_mutex);
return;
}