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scsi: aacraid: Insure we don't access PCIe space during AER/EEH 

There are a few windows during AER/EEH when we can access PCIe I/O mapped
registers. This will harden the access to insure we do not allow PCIe
access during errors

Signed-off-by: Dave Carroll <david.carroll@microsemi.com>
Reviewed-by: Sagar Biradar <sagar.biradar@microchip.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Dave Carroll 2019-03-22 12:16:03 -06:00 committed by Martin K. Petersen
parent c2fe742ff6
commit b6554cfe09
2 changed files with 8 additions and 3 deletions
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7
drivers/scsi/aacraid/aacraid.h
View File

@ -2640,9 +2640,14 @@ static inline unsigned int cap_to_cyls(sector_t capacity, unsigned divisor)
return capacity;
}
static inline int aac_pci_offline(struct aac_dev *dev)
{
return pci_channel_offline(dev->pdev) || dev->handle_pci_error;
}
static inline int aac_adapter_check_health(struct aac_dev *dev)
{
if (unlikely(pci_channel_offline(dev->pdev)))
if (unlikely(aac_pci_offline(dev)))
return -1;
return (dev)->a_ops.adapter_check_health(dev);

4
drivers/scsi/aacraid/commsup.c
View File

@ -672,7 +672,7 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
return -ETIMEDOUT;
}
if (unlikely(pci_channel_offline(dev->pdev)))
if (unlikely(aac_pci_offline(dev)))
return -EFAULT;
if ((blink = aac_adapter_check_health(dev)) > 0) {
@ -772,7 +772,7 @@ int aac_hba_send(u8 command, struct fib *fibptr, fib_callback callback,
spin_unlock_irqrestore(&fibptr->event_lock, flags);
if (unlikely(pci_channel_offline(dev->pdev)))
if (unlikely(aac_pci_offline(dev)))
return -EFAULT;
fibptr->flags |= FIB_CONTEXT_FLAG_WAIT;