Fix for issue - Unable to boot from the SAS drive connected to HBA This patch checks whether HBA is SAS2008 B0 controller. if it is a SAS2008 B0 controller then it use IO-APIC interrupt instead of MSIX, as SAS2008 B0 controller doesn't support MSIX interrupts.
Signed-off-by: Sreekanth Reddy <[email protected]> Cc: <[email protected]> --- diff -Nuarp old/mpt2sas/mpt2sas_base.c new/mpt2sas/mpt2sas_base.c --- old/drivers/scsi/mpt2sas/mpt2sas_base.c 2012-08-02 10:53:59.000000000 +0530 +++ new/drivers/scsi/mpt2sas/mpt2sas_base.c 2012-08-02 11:11:13.000000000 +0530 @@ -1154,6 +1154,15 @@ mpt2sas_base_check_enable_msix(struct MP { int base; u16 message_control; + u8 revision; + + /* Check whether controller SAS2008 B0 controller, + if it is a SAS2008 B0 controller use IO-APIC instead of MSIX */ + pci_read_config_byte(ioc->pdev, PCI_CLASS_REVISION, &revision); + if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 && + revision == 0x01) { + return -EINVAL; + } base = pci_find_capability(ioc->pdev, PCI_CAP_ID_MSIX); if (!base) { -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
