[SCSI] ipr: Fix sleeping function called with interrupts disabled

The ata_sas_slave_configure was changed such that it now allocates
some memory for a drain buffer for ATAPI devices. Fixup the ipr
driver such that we no longer make this call with interrupts disabled.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 9 insertions, 4 deletions

diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index c09d77591f92..dd689ded8609 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -3654,6 +3654,7 @@ static int ipr_slave_configure(struct scsi_device *sdev)
 {
         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
         struct ipr_resource_entry *res;
+        struct ata_port *ap = NULL;
         unsigned long lock_flags = 0;
 
         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
@@ -3672,12 +3673,16 @@ static int ipr_slave_configure(struct scsi_device *sdev)
                 }
                 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
                         sdev->allow_restart = 1;
-                if (ipr_is_gata(res) && res->sata_port) {
+                if (ipr_is_gata(res) && res->sata_port)
+                        ap = res->sata_port->ap;
+                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
+
+                if (ap) {
                         scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
-                        ata_sas_slave_configure(sdev, res->sata_port->ap);
-                } else {
+                        ata_sas_slave_configure(sdev, ap);
+                } else
                         scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
-                }
+                return 0;
         }
         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
         return 0;