[PATCH btt] Only display plug/unplug data when the device had been plugged.

[Alan D. Brunelle]

From: Alan D. Brunelle <[EMAIL PROTECTED]>

Fix plug output to only display when there are plug events to show.

Signed-off-by:: Alan D. Brunelle <[EMAIL PROTECTED]>
---

 btt/output.c |   24 +++++++++++++-----------
 1 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/btt/output.c b/btt/output.c
index f317b43..8baf14d 100644
--- a/btt/output.c
+++ b/btt/output.c
@@ -387,6 +387,7 @@ void output_dip_seek_info(FILE *ofp)
                fprintf(ofp, "%10s | %15s %15s %15s | %-15s\n", 
                        "Overall", "NSEEKS", "MEAN", "MEDIAN", "MODE");
                output_seek_mode_info(ofp, &seek_info);
+               fprintf(ofp, "\n");
        }
        fprintf(ofp, "\n");
 }
@@ -445,19 +446,20 @@ void __dip_output_plug(struct d_info *dip, void *arg)
        FILE *ofp = arg;
        double delta, pct;
 
-       if (dip->is_plugged) dip_unplug(dip->device, dip->end_time, 0);
-
-       delta = dip->end_time - dip->start_time;
-       pct = 100.0 * ((dip->plugged_time / delta) / delta);
+       if (dip->nplugs > 0) {
+               if (dip->is_plugged) dip_unplug(dip->device, dip->end_time, 0);
+               delta = dip->end_time - dip->start_time;
+               pct = 100.0 * ((dip->plugged_time / delta) / delta);
 
-       fprintf(ofp, "%10s | %10d(%10d) | %13.9lf%%\n", 
-               make_dev_hdr(dev_info, 15, dip), 
-               dip->nplugs, dip->n_timer_unplugs, pct);
+               fprintf(ofp, "%10s | %10d(%10d) | %13.9lf%%\n", 
+                       make_dev_hdr(dev_info, 15, dip), 
+                       dip->nplugs, dip->n_timer_unplugs, pct);
 
-       n_plugs++;
-       plug_info.n_plugs += dip->nplugs;
-       plug_info.n_timer_unplugs += dip->n_timer_unplugs;
-       plug_info.t_percent += pct;
+               n_plugs++;
+               plug_info.n_plugs += dip->nplugs;
+               plug_info.n_timer_unplugs += dip->n_timer_unplugs;
+               plug_info.t_percent += pct;
+       }
 }
 
 void __dip_output_plug_all(FILE *ofp, struct plug_info *p)