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mpt3sas: Fix panic when aer correct error occurred 

The _scsih_pci_mmio_enabled called if scsih_pci_error_detected returns
PCI_ERS_RESULT_CAN_RECOVER, at this point, read/write to the device
still works, no need to reset slot.

Or the mpt3sas_base_map_resources in scsih_pci_slot_reset will fail,
and iounamp ioc->chip, then we will meet issue when read ioc->chip
in mpt3sas_base_get_iocstate from _base_fault_reset_work.

Cc: Sathya Prakash <sathya.prakash@broadcom.com>
Cc: Chaitra P B <chaitra.basappa@broadcom.com>
Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Chaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Kefeng Wang 2016-07-12 17:43:25 +08:00 committed by Martin K. Petersen
parent ef8d1d51aa
commit 83c3d3400c
1 changed files with 5 additions and 2 deletions
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7
drivers/scsi/mpt3sas/mpt3sas_scsih.c
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@ -9035,8 +9035,11 @@ scsih_pci_mmio_enabled(struct pci_dev *pdev)
/* TODO - dump whatever for debugging purposes */ /* TODO - dump whatever for debugging purposes */
/* Request a slot reset. */ /* This called only if scsih_pci_error_detected returns
return PCI_ERS_RESULT_NEED_RESET; * PCI_ERS_RESULT_CAN_RECOVER. Read/write to the device still
* works, no need to reset slot.
*/
return PCI_ERS_RESULT_RECOVERED;
} }
/* /*