[SCSI] allow sleeping in ->eh_bus_reset_handler()

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/drivers/scsi/53c700.c b/drivers/scsi/53c700.c
index 8c64212e9608..47cf9bd55d90 100644
--- a/drivers/scsi/53c700.c
+++ b/drivers/scsi/53c700.c
@@ -1957,23 +1957,30 @@ NCR_700_bus_reset(struct scsi_cmnd * SCp)
         printk(KERN_INFO "scsi%d (%d:%d) New error handler wants BUS reset, cmd %p\n\t",
                SCp->device->host->host_no, SCp->device->id, SCp->device->lun, SCp);
         scsi_print_command(SCp);
+
         /* In theory, eh_complete should always be null because the
          * eh is single threaded, but just in case we're handling a
          * reset via sg or something */
-        while(hostdata->eh_complete != NULL) {
+        spin_lock_irq(SCp->device->host->host_lock);
+        while (hostdata->eh_complete != NULL) {
                 spin_unlock_irq(SCp->device->host->host_lock);
                 msleep_interruptible(100);
                 spin_lock_irq(SCp->device->host->host_lock);
         }
+
         hostdata->eh_complete = &complete;
         NCR_700_internal_bus_reset(SCp->device->host);
+
         spin_unlock_irq(SCp->device->host->host_lock);
         wait_for_completion(&complete);
         spin_lock_irq(SCp->device->host->host_lock);
+
         hostdata->eh_complete = NULL;
         /* Revalidate the transport parameters of the failing device */
         if(hostdata->fast)
                 spi_schedule_dv_device(SCp->device);
+
+        spin_unlock_irq(SCp->device->host->host_lock);
         return SUCCESS;
 }