firewire: fw-sbp2: always enable IRQs before calling command ORB callback

On IOMMU-less noncoherent architectures, orb->callback will memcpy the
whole SCSI command buffer for READ-like SCSI commands.  It is therefore
friendlier to enable IRQs before the call, like before patch "Add
ref-counting for sbp2 orbs".

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Acked-by: Kristian Høgsberg <krh@redhat.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/firewire/fw-sbp2.c b/drivers/firewire/fw-sbp2.c
index 238730f75db1..7ecc154a8274 100644
--- a/drivers/firewire/fw-sbp2.c
+++ b/drivers/firewire/fw-sbp2.c
@@ -361,11 +361,12 @@ complete_transaction(struct fw_card *card, int rcode,
                 orb->rcode = rcode;
         if (orb->rcode != RCODE_COMPLETE) {
                 list_del(&orb->link);
+                spin_unlock_irqrestore(&card->lock, flags);
                 orb->callback(orb, NULL);
+        } else {
+                spin_unlock_irqrestore(&card->lock, flags);
         }
 
-        spin_unlock_irqrestore(&card->lock, flags);
-
         kref_put(&orb->kref, free_orb);
 }