linux: Update to v4.2.1-openpower1
This brings in the 4.2.1 stable release, and the accraid RAID driver for
PMC-Sierra RAID on Habanero.
The RAID driver is submitted upstream to the linux-scsi mailing list,
but is not yet in a tree.
The stable release brings in a few commits that are of interest to
OpenPower platforms:
94d718d024e xfs: return errors from partial I/O failures to files
2937b784b19 xfs: Fix file type directory corruption for btree directories
95310b79776 libxfs: readahead of dir3 data blocks should use the read verifier
0a3b19cef4f sched: Fix cpu_active_mask/cpu_online_mask race
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/openpower/linux/linux-0011-aacraid-Change-interrupt-mode-to-MSI-for-Series-6.patch b/openpower/linux/linux-0011-aacraid-Change-interrupt-mode-to-MSI-for-Series-6.patch
new file mode 100644
index 0000000..1ed4ef9
--- /dev/null
+++ b/openpower/linux/linux-0011-aacraid-Change-interrupt-mode-to-MSI-for-Series-6.patch
@@ -0,0 +1,46 @@
+From d9ba7aa29b0b509f955fc699e2cc46586350cc70 Mon Sep 17 00:00:00 2001
+From: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
+Date: Fri, 28 Aug 2015 06:38:35 -0400
+Subject: [PATCH 11/18] aacraid: Change interrupt mode to MSI for Series 6
+
+This change always sets MSI interrupt mode for series-6 controller.
+
+Reviewed-by: Tomas Henzl <thenzl@redhat.com>
+Reviewed-by: Murthy Bhat <Murthy.Bhat@pmcs.com>
+Reviewed-by: Karthikeya Sunkesula <Karthikeya.Sunkesula@pmcs.com>
+Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
+Signed-off-by: Joel Stanley <joel@jms.id.au>
+---
+ drivers/scsi/aacraid/aachba.c | 2 +-
+ drivers/scsi/aacraid/src.c | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
+index fe59b00..05f2a02 100644
+--- a/drivers/scsi/aacraid/aachba.c
++++ b/drivers/scsi/aacraid/aachba.c
+@@ -259,7 +259,7 @@ MODULE_PARM_DESC(commit, "Control whether a COMMIT_CONFIG is issued to the"
+ " 0=off, 1=on");
+ module_param_named(msi, aac_msi, int, S_IRUGO|S_IWUSR);
+ MODULE_PARM_DESC(msi, "IRQ handling."
+- " 0=PIC(default), 1=MSI, 2=MSI-X(unsupported, uses MSI)");
++ " 0=PIC(default), 1=MSI, 2=MSI-X)");
+ module_param(startup_timeout, int, S_IRUGO|S_IWUSR);
+ MODULE_PARM_DESC(startup_timeout, "The duration of time in seconds to wait for"
+ " adapter to have it's kernel up and\n"
+diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c
+index b147341..eb07b3d 100644
+--- a/drivers/scsi/aacraid/src.c
++++ b/drivers/scsi/aacraid/src.c
+@@ -742,7 +742,7 @@ int aac_src_init(struct aac_dev *dev)
+ if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE1)
+ goto error_iounmap;
+
+- dev->msi = aac_msi && !pci_enable_msi(dev->pdev);
++ dev->msi = !pci_enable_msi(dev->pdev);
+
+ dev->aac_msix[0].vector_no = 0;
+ dev->aac_msix[0].dev = dev;
+--
+2.5.0
+