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authorsreekanth.reddy@lsi.com <sreekanth.reddy@lsi.com>2012-08-22 16:55:13 +0530
committerJames Bottomley <JBottomley@Parallels.com>2012-09-17 13:49:47 +0100
commit10cce6d8b5af0b32bc4254ae4a28423a74c0921c (patch)
treec2c1284baff6bd8765802bd668e3602c33545434 /drivers
parentd6532207116307eb7ecbfa7b9e02c53230096a50 (diff)
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[SCSI] mpt2sas: Fix for issue - Unable to boot from the 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. [jejb: fix whitespace problems] Signed-off-by: Sreekanth Reddy <sreekanth.reddy@lsi.com> Cc: <stable@vger.kernel.org> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers')
-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 b25757d1e91b..9d5a56c4b332 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.c
@@ -1209,6 +1209,13 @@ _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 "