diff --git a/openpower/linux/0002-scsi-ipr-Fix-softlockup-when-rescanning-devices-in-p.patch b/openpower/linux/0002-scsi-ipr-Fix-softlockup-when-rescanning-devices-in-p.patch
new file mode 100644
index 0000000..28e9239
--- /dev/null
+++ b/openpower/linux/0002-scsi-ipr-Fix-softlockup-when-rescanning-devices-in-p.patch
@@ -0,0 +1,101 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Wen Xiong <wenxiong@linux.vnet.ibm.com>
+Date: Fri, 6 Mar 2020 09:57:28 -0600
+Subject: [PATCH 2/3] scsi: ipr: Fix softlockup when rescanning devices in
+ petitboot
+
+When trying to rescan disks in petitboot shell, we hit the following
+softlockup stacktrace:
+
+Kernel panic - not syncing: System is deadlocked on memory
+[  241.223394] CPU: 32 PID: 693 Comm: sh Not tainted 5.4.16-openpower1 #1
+[  241.223406] Call Trace:
+[  241.223415] [c0000003f07c3180] [c000000000493fc4] dump_stack+0xa4/0xd8 (unreliable)
+[  241.223432] [c0000003f07c31c0] [c00000000007d4ac] panic+0x148/0x3cc
+[  241.223446] [c0000003f07c3260] [c000000000114b10] out_of_memory+0x468/0x4c4
+[  241.223461] [c0000003f07c3300] [c0000000001472b0] __alloc_pages_slowpath+0x594/0x6d8
+[  241.223476] [c0000003f07c3420] [c00000000014757c] __alloc_pages_nodemask+0x188/0x1a4
+[  241.223492] [c0000003f07c34a0] [c000000000153e10] alloc_pages_current+0xcc/0xd8
+[  241.223508] [c0000003f07c34e0] [c0000000001577ac] alloc_slab_page+0x30/0x98
+[  241.223524] [c0000003f07c3520] [c0000000001597fc] new_slab+0x138/0x40c
+[  241.223538] [c0000003f07c35f0] [c00000000015b204] ___slab_alloc+0x1e4/0x404
+[  241.223552] [c0000003f07c36c0] [c00000000015b450] __slab_alloc+0x2c/0x48
+[  241.223566] [c0000003f07c36f0] [c00000000015b754] kmem_cache_alloc_node+0x9c/0x1b4
+[  241.223582] [c0000003f07c3760] [c000000000218c48] blk_alloc_queue_node+0x34/0x270
+[  241.223599] [c0000003f07c37b0] [c000000000226574] blk_mq_init_queue+0x2c/0x78
+[  241.223615] [c0000003f07c37e0] [c0000000002ff710] scsi_mq_alloc_queue+0x28/0x70
+[  241.223631] [c0000003f07c3810] [c0000000003005b8] scsi_alloc_sdev+0x184/0x264
+[  241.223647] [c0000003f07c38a0] [c000000000300ba0] scsi_probe_and_add_lun+0x288/0xa3c
+[  241.223663] [c0000003f07c3a00] [c000000000301768] __scsi_scan_target+0xcc/0x478
+[  241.223679] [c0000003f07c3b20] [c000000000301c64] scsi_scan_channel.part.9+0x74/0x7c
+[  241.223696] [c0000003f07c3b70] [c000000000301df4] scsi_scan_host_selected+0xe0/0x158
+[  241.223712] [c0000003f07c3bd0] [c000000000303f04] store_scan+0x104/0x114
+[  241.223727] [c0000003f07c3cb0] [c0000000002d5ac4] dev_attr_store+0x30/0x4c
+[  241.223741] [c0000003f07c3cd0] [c0000000001dbc34] sysfs_kf_write+0x64/0x78
+[  241.223756] [c0000003f07c3cf0] [c0000000001da858] kernfs_fop_write+0x170/0x1b8
+[  241.223773] [c0000003f07c3d40] [c0000000001621fc] __vfs_write+0x34/0x60
+[  241.223787] [c0000003f07c3d60] [c000000000163c2c] vfs_write+0xa8/0xcc
+[  241.223802] [c0000003f07c3db0] [c000000000163df4] ksys_write+0x70/0xbc
+[  241.223816] [c0000003f07c3e20] [c00000000000b40c] system_call+0x5c/0x68
+
+As a part of the scan process Linux will allocate and configure a
+scsi_device for each target to be scanned. If the device is not present,
+then the scsi_device is torn down. As a part of scsi_device teardown a
+workqueue item will be scheduled and the lockups we see are because there
+are 250k workqueue items to be processed.  Accoding to the specification of
+SIS-64 sas controller, max_channel should be decreased on SIS-64 adapters
+to 4.
+
+The patch fixes softlockup issue.
+
+Thanks for Oliver Halloran's help with debugging and explanation!
+
+Link: https://lore.kernel.org/r/1583510248-23672-1-git-send-email-wenxiong@linux.vnet.ibm.com
+Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
+Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
+Signed-off-by: Joel Stanley <joel@jms.id.au>
+---
+ drivers/scsi/ipr.c | 3 ++-
+ drivers/scsi/ipr.h | 1 +
+ 2 files changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
+index 079c04bc448a..7a57b61f0340 100644
+--- a/drivers/scsi/ipr.c
++++ b/drivers/scsi/ipr.c
+@@ -9947,6 +9947,7 @@ static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
+ 	ioa_cfg->max_devs_supported = ipr_max_devs;
+ 
+ 	if (ioa_cfg->sis64) {
++		host->max_channel = IPR_MAX_SIS64_BUSES;
+ 		host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
+ 		host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
+ 		if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
+@@ -9955,6 +9956,7 @@ static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
+ 					   + ((sizeof(struct ipr_config_table_entry64)
+ 					       * ioa_cfg->max_devs_supported)));
+ 	} else {
++		host->max_channel = IPR_VSET_BUS;
+ 		host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
+ 		host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
+ 		if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
+@@ -9964,7 +9966,6 @@ static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
+ 					       * ioa_cfg->max_devs_supported)));
+ 	}
+ 
+-	host->max_channel = IPR_VSET_BUS;
+ 	host->unique_id = host->host_no;
+ 	host->max_cmd_len = IPR_MAX_CDB_LEN;
+ 	host->can_queue = ioa_cfg->max_cmds;
+diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
+index a67baeb36d1f..b97aa9ac2ffe 100644
+--- a/drivers/scsi/ipr.h
++++ b/drivers/scsi/ipr.h
+@@ -1300,6 +1300,7 @@ struct ipr_resource_entry {
+ #define IPR_ARRAY_VIRTUAL_BUS			0x1
+ #define IPR_VSET_VIRTUAL_BUS			0x2
+ #define IPR_IOAFP_VIRTUAL_BUS			0x3
++#define IPR_MAX_SIS64_BUSES			0x4
+ 
+ #define IPR_GET_RES_PHYS_LOC(res) \
+ 	(((res)->bus << 24) | ((res)->target << 8) | (res)->lun)