[SCSI] aacraid: interruptible ioctl

Received from Mark Salyzyn

This patch allows the FSACTL_SEND_LARGE_FIB, FSACTL_SENDFIB and
FSACTL_SEND_RAW_SRB ioctl calls into the aacraid driver to be
interruptible. Only necessary if the adapter and/or the management
software has gone into some sort of misbehavior and the system is being
rebooted, thus permitting the user management software applications to
be killed relatively cleanly. The FIB queue resource is held out of the
free queue until the adapter finally, if ever, completes the command.

Signed-off-by: Mark Haverkamp <markh@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/drivers/scsi/aacraid/dpcsup.c b/drivers/scsi/aacraid/dpcsup.c
index b2a5c7262f36..8335f07b7720 100644
--- a/drivers/scsi/aacraid/dpcsup.c
+++ b/drivers/scsi/aacraid/dpcsup.c
@@ -124,10 +124,15 @@ unsigned int aac_response_normal(struct aac_queue * q)
                 } else {
                         unsigned long flagv;
                         spin_lock_irqsave(&fib->event_lock, flagv);
-                        fib->done = 1;
+                        if (!fib->done)
+                                fib->done = 1;
                         up(&fib->event_wait);
                         spin_unlock_irqrestore(&fib->event_lock, flagv);
                         FIB_COUNTER_INCREMENT(aac_config.NormalRecved);
+                        if (fib->done == 2) {
+                                aac_fib_complete(fib);
+                                aac_fib_free(fib);
+                        }
                 }
                 consumed++;
                 spin_lock_irqsave(q->lock, flags);
@@ -316,7 +321,8 @@ unsigned int aac_intr_normal(struct aac_dev * dev, u32 Index)
                         unsigned long flagv;
                         dprintk((KERN_INFO "event_wait up\n"));
                         spin_lock_irqsave(&fib->event_lock, flagv);
-                        fib->done = 1;
+                        if (!fib->done)
+                                fib->done = 1;
                         up(&fib->event_wait);
                         spin_unlock_irqrestore(&fib->event_lock, flagv);
                         FIB_COUNTER_INCREMENT(aac_config.NormalRecved);