From a2b302e4f2fb40bdcda3c7c70dae9a27974dbd49 Mon Sep 17 00:00:00 2001 From: Dave Carroll Date: Fri, 22 Mar 2019 12:16:03 -0600 Subject: [PATCH] scsi: aacraid: Insure we don't access PCIe space during AER/EEH [ Upstream commit b6554cfe09e1f610aed7d57164ab7760be57acd9 ] 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 Reviewed-by: Sagar Biradar Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin (Microsoft) --- drivers/scsi/aacraid/aacraid.h | 7 ++++++- drivers/scsi/aacraid/commsup.c | 4 ++-- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h index 39eb415987fc..074760f21014 100644 --- a/drivers/scsi/aacraid/aacraid.h +++ b/drivers/scsi/aacraid/aacraid.h @@ -2639,9 +2639,14 @@ 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); diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c index 3236240a4edd..b7588de4484e 100644 --- a/drivers/scsi/aacraid/commsup.c +++ b/drivers/scsi/aacraid/commsup.c @@ -673,7 +673,7 @@ 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) { @@ -773,7 +773,7 @@ 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; -- GitLab