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SCSI: mpt2sas: Fix for issue - Unable to boot from the drive connected to HBA

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commit 10cce6d8b5 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>
This commit is contained in:
sreekanth.reddy@lsi.com 2012-08-22 16:55:13 +05:30 committed by Greg Kroah-Hartman
parent c68f32825b
commit d39bdd32d0
1 changed files with 7 additions and 0 deletions
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7
drivers/scsi/mpt2sas/mpt2sas_base.c
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@ -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 "