In article <[email protected]> you wrote: > Newsgroups: gmane.linux.kernel
> Hi. > There is a bug with handling of adaptec raid cards (in my case it is Adaptec > 3405) where kernel logs hundreds of "AAC: Host adapter dead -1" messages. > Bug was reported previously on lkml but there was no progres in solving it. > There is also bugzilla entry: > https://bugzilla.kernel.org/show_bug.cgi?id=151661 > I've bisected that to commit bellow and indeed, reverting it from kernel > 4.9.3 > makes messages go away. Don't try to switch Adaptec 3405/3805 RAID cards to MSI-X interrupt mode. Fix https://bugzilla.kernel.org/show_bug.cgi?id=151661 Signed-off-by: Andrey Jr. Melnikov <[email protected]> --- diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h index 969c312de1be..2ad8403dea40 100644 --- a/drivers/scsi/aacraid/aacraid.h +++ b/drivers/scsi/aacraid/aacraid.h @@ -12,6 +12,9 @@ * D E F I N E S *----------------------------------------------------------------------------*/ +#define AAC_SUBID_3805 0x02bc +#define AAC_SUBID_3405 0x02bb + #define AAC_MAX_MSIX 32 /* vectors */ #define AAC_PCI_MSI_ENABLE 0x8000 diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c index 341ea327ae79..a61138504927 100644 --- a/drivers/scsi/aacraid/comminit.c +++ b/drivers/scsi/aacraid/comminit.c @@ -52,6 +52,11 @@ static inline int aac_is_msix_mode(struct aac_dev *dev) { u32 status; + /* Don't allow switch 3405/3805 cards to MSI-X interrupt mode */ + if (dev->pdev->subsystem_device == AAC_SUBID_3405 || + dev->pdev->subsystem_device == AAC_SUBID_3405) + return 0; + status = src_readl(dev, MUnit.OMR); return (status & AAC_INT_MODE_MSIX); }
