From 7f42489d3b2119002d1480df743da5c7407c7478 Mon Sep 17 00:00:00 2001
From: Kai-Chuan Hsieh <kaichuan.hsieh@canonical.com>
Date: Thu, 15 Apr 2021 12:05:53 +0800
Subject: Fix: Correct path if i2c number is changed

LP: #1922988

The i2c bus number might be changed after reboot.
Get device path again if the file does not exist.
---
 units/touchpad/jobs.pxu | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/units/touchpad/jobs.pxu b/units/touchpad/jobs.pxu
index bb6f596..794de79 100644
--- a/units/touchpad/jobs.pxu
+++ b/units/touchpad/jobs.pxu
@@ -228,7 +228,9 @@ id: touchpad/palm-rejection-firmware-labeling_{product_slug}
 requires: device.driver == 'hid-multitouch'
 estimated_duration: 5.0
 command:
- abs_caps=$(cat </sys{path}/capabilities/abs)
+ dev_path=$(udev_resource.py -f TOUCHPAD | grep "path" | cut -d" " -f2)
+ abs_path="/sys$dev_path/capabilities/abs"
+ abs_caps=$(cat <"$abs_path")
  abs_caps_hex=$((16#"$abs_caps"))
  tool_type_bit=$((abs_caps_hex >> 55))
  support=$((tool_type_bit & 1))
@@ -236,8 +238,8 @@ command:
      exit 0
  else
      echo "Touchapd info:"
-     cat </sys{path}/name
-     cat </sys{path}/modalias
+     cat <"/sys$dev_path/name"
+     cat <"/sys$dev_path/modalias"
      echo "Touchpad EV_ABS capabilities:"
      echo "$abs_caps"
      exit 1
-- 
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