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authorsreekanth.reddy@lsi.com <sreekanth.reddy@lsi.com>2012-08-22 16:55:13 +0530
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-10-02 10:30:07 -0700
commitd39bdd32d086d55a4adf228a0af2874ee489cd61 (patch)
tree4b7fc91b19af3c4a7bbaaf2b76ef10011f390786 /drivers/scsi
parentc68f32825bc8c3e046493262422e134a03adb6c6 (diff)
SCSI: mpt2sas: Fix for issue - Unable to boot from the drive connected to HBA
commit 10cce6d8b5af0b32bc4254ae4a28423a74c0921c upstream. 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. [jejb: fix whitespace problems] Signed-off-by: Sreekanth Reddy <sreekanth.reddy@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/mpt2sas/mpt2sas_base.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c
index c4cef569540b..db793621c403 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.c
@@ -1202,6 +1202,13 @@ _base_check_enable_msix(struct MPT2SAS_ADAPTER *ioc)
u16 message_control;
+ /* Check whether controller SAS2008 B0 controller,
+ if it is SAS2008 B0 controller use IO-APIC instead of MSIX */
+ if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 &&
+ ioc->pdev->revision == 0x01) {
+ return -EINVAL;
+ }
+
base = pci_find_capability(ioc->pdev, PCI_CAP_ID_MSIX);
if (!base) {
dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "msix not "