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authorShivasharan S2017-02-10 00:59:24 -0800
committerMartin K. Petersen2017-02-13 07:26:22 -0500
commitb41c0a4aa7c0fc1f98648c020358598498d48f06 (patch)
treecf9971c9a1671e44a05c29c72a9885d68b8515e3 /drivers/scsi
parent95c060869e6872ea03a4a9d15236adcffb1d8b07 (diff)
scsi: megaraid_sas: set pd_after_lb from MR_BuildRaidContext and initialize pDevHandle to MR_DEVHANDLE_INVALID
Issue is limited for Syncro firmware where pd_after_lb is not set but is accidentally used. Not a functional issue, but results in low performance due to improper load balancing between two LUNs. Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_fp.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c
index 68582d9f9e45..a5517e72ad2f 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fp.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fp.c
@@ -948,6 +948,7 @@ static u8 mr_spanset_get_phy_params(struct megasas_instance *instance, u32 ld,
struct fusion_context *fusion;
fusion = instance->ctrl_context;
+ *pDevHandle = cpu_to_le16(MR_DEVHANDLE_INVALID);
/*Get row and span from io_info for Uneven Span IO.*/
row = io_info->start_row;
@@ -986,7 +987,6 @@ static u8 mr_spanset_get_phy_params(struct megasas_instance *instance, u32 ld,
MR_PdDevHandleGet(r1_alt_pd, map);
}
} else {
- *pDevHandle = cpu_to_le16(MR_DEVHANDLE_INVALID);
if ((raid->level >= 5) &&
((fusion->adapter_type == THUNDERBOLT_SERIES) ||
((fusion->adapter_type == INVADER_SERIES) &&
@@ -1013,6 +1013,7 @@ static u8 mr_spanset_get_phy_params(struct megasas_instance *instance, u32 ld,
(span << RAID_CTX_SPANARM_SPAN_SHIFT) | physArm;
io_info->span_arm = pRAID_Context->span_arm;
}
+ io_info->pd_after_lb = pd;
return retval;
}
@@ -1049,7 +1050,7 @@ u8 MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow,
struct fusion_context *fusion;
fusion = instance->ctrl_context;
-
+ *pDevHandle = cpu_to_le16(MR_DEVHANDLE_INVALID);
row = mega_div64_32(stripRow, raid->rowDataSize);
@@ -1102,8 +1103,6 @@ u8 MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow,
MR_PdDevHandleGet(r1_alt_pd, map);
}
} else {
- /* set dev handle as invalid. */
- *pDevHandle = cpu_to_le16(MR_DEVHANDLE_INVALID);
if ((raid->level >= 5) &&
((fusion->adapter_type == THUNDERBOLT_SERIES) ||
((fusion->adapter_type == INVADER_SERIES) &&
@@ -1132,6 +1131,7 @@ u8 MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow,
(span << RAID_CTX_SPANARM_SPAN_SHIFT) | physArm;
io_info->span_arm = pRAID_Context->span_arm;
}
+ io_info->pd_after_lb = pd;
return retval;
}