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List:       openembedded-core
Subject:    [OE-core] [hardknott][PATCH 04/10] pybootchart: Avoid divide by zero
From:       "Anuj Mittal" <anuj.mittal () intel ! com>
Date:       2021-09-29 14:59:02
Message-ID: af8a9ecacc00e9166a7b754c25e55334c65af82d.1632903759.git.anuj.mittal () intel ! com
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From: Richard Purdie <richard.purdie@linuxfoundation.org>

Avoid a rare divide by zero error if there isn't data point spread.

[YOCTO #14547]

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit d7e36d01e87ddf89f76f164a0b7d98f597a53fa5)
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
---
 scripts/pybootchartgui/pybootchartgui/draw.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/scripts/pybootchartgui/pybootchartgui/draw.py \
b/scripts/pybootchartgui/pybootchartgui/draw.py index 29eb7505bc..fc708b55c3 100644
--- a/scripts/pybootchartgui/pybootchartgui/draw.py
+++ b/scripts/pybootchartgui/pybootchartgui/draw.py
@@ -267,7 +267,10 @@ def draw_chart(ctx, color, fill, chart_bounds, data, proc_tree, \
data_range):  # avoid divide by zero
     if max_y == 0:
         max_y = 1.0
-    xscale = float (chart_bounds[2]) / (max_x - x_shift)
+    if (max_x - x_shift):
+        xscale = float (chart_bounds[2]) / (max_x - x_shift)
+    else:
+        xscale = float (chart_bounds[2])
     # If data_range is given, scale the chart so that the value range in
     # data_range matches the chart bounds exactly.
     # Otherwise, scale so that the actual data matches the chart bounds.
-- 
2.31.1



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