The megaraid SAS driver uses a shared host tag map internally,
so we should be telling the block layer about it.
Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
---
drivers/scsi/megaraid/megaraid_sas_base.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index f05580e..7fb83d0 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -2757,6 +2757,7 @@ static struct scsi_host_template megasas_template = {
.use_clustering = ENABLE_CLUSTERING,
.change_queue_depth = scsi_change_queue_depth,
.no_write_same = 1,
+ .use_blk_tags = 1,
};
/**
@@ -4996,6 +4997,11 @@ static int megasas_io_attach(struct megasas_instance *instance)
host->hostt->eh_bus_reset_handler = NULL;
}
+ if (scsi_init_shared_tag_map(host, host->can_queue)) {
+ printk(KERN_INFO "megasas: failed to init shared tag map\n");
+ return -ENODEV;
+ }
+
/*
* Notify the mid-layer about the new controller
*/
--
1.8.5.2
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