From: George Kadianakis <desnacked {bomb} gmail {point} com>
A Gentoo bug report [1] showed that as of 2.6.31 lpfc only uses INTx interrupts.
This patch restores lpfc's ability to support MSI-X/MSI interrupts that the
"Addition of SLI4 Interface - Base Support" patch [2] broke.
It reestablishes MSI-X as the default interrupt method and in case MSI-X is not
supported lpfc_sli{4,}_enable_intr fallbacks to MSI and then to INTx.
[1]: http://bugs.gentoo.org/show_bug.cgi?id=296319
[2]: commit da0436e915a5c17ee79e72c1bf978a4ebb1cbf4d
Signed-off-by: George Kadianakis <desnacked@xxxxxxxxx>
---
drivers/scsi/lpfc/lpfc_attr.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index e1a30a1..936ecaf 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -2890,12 +2890,12 @@ LPFC_ATTR_RW(poll_tmo, 10, 1, 255,
/*
# lpfc_use_msi: Use MSI (Message Signaled Interrupts) in systems that
# support this feature
-# 0 = MSI disabled (default)
+# 0 = MSI disabled
# 1 = MSI enabled
-# 2 = MSI-X enabled
+# 2 = MSI-X enabled (default)
# Value range is [0,2]. Default value is 0.
*/
-LPFC_ATTR_R(use_msi, 0, 0, 2, "Use Message Signaled Interrupts (1) or "
+LPFC_ATTR_R(use_msi, 2, 0, 2, "Use Message Signaled Interrupts (1) or "
"MSI-X (2), if possible");
/*
--
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