[PATCH] megaraid_sas: boot hangs while LD is offline

[Hannes Reinecke <hare@suse.de>]

Offline Logical drives (LDs) should not allowed to be visible
to the OS, as the OS will hang trying to send commands to it.
This patch skips offline LDs like it already does for
non-system physical drives (PDs).

Signed-off-by: Hannes Reinecke <hare@suse.com>
---
 drivers/scsi/megaraid/megaraid_sas_base.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 97a1c1c..f32831b 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -1760,7 +1760,7 @@ static void megasas_set_dma_alignment(struct scsi_device *sdev)
 
 static int megasas_slave_configure(struct scsi_device *sdev)
 {
-	u16 pd_index = 0;
+	u16 pd_index = 0, ld_index;
 	struct megasas_instance *instance;
 
 	instance = megasas_lookup_instance(sdev->host->host_no);
@@ -1772,6 +1772,11 @@ static int megasas_slave_configure(struct scsi_device *sdev)
 			if (instance->pd_list[pd_index].driveState !=
 				MR_PD_STATE_SYSTEM)
 				return -ENXIO;
+		} else {
+			ld_index = ((sdev->channel - MEGASAS_MAX_PD_CHANNELS) *
+				    MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
+			if (instance->ld_ids[ld_index] == 0xff)
+				return -ENXIO;
 		}
 	}
 	megasas_set_dma_alignment(sdev);
-- 
1.8.5.6