[PATCH 1/2] selftests/intel_pstate: fix operand expected

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Running "make kselftest TARGETS=intel_pstate" results in
the following errors:
- ./run.sh: line 90: / 1000: syntax error: operand expected
(error token is "/ 1000")
- ./run.sh: line 92: / 1000: syntax error: operand expected
(error token is "/ 1000")

This fix allows to have cross-platform compatibility when
using arithmetic expression with command substitutions.

Signed-off-by: Alessandro Zanni <alessandro.zanni87@xxxxxxxxx>
---
 tools/testing/selftests/intel_pstate/run.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/intel_pstate/run.sh b/tools/testing/selftests/intel_pstate/run.sh
index e7008f614ad7..0c1b6c1308a4 100755
--- a/tools/testing/selftests/intel_pstate/run.sh
+++ b/tools/testing/selftests/intel_pstate/run.sh
@@ -87,9 +87,9 @@ mkt_freq=${_mkt_freq}0
 
 # Get the ranges from cpupower
 _min_freq=$(cpupower frequency-info -l | tail -1 | awk ' { print $1 } ')
-min_freq=$(($_min_freq / 1000))
+min_freq=$((_min_freq / 1000))
 _max_freq=$(cpupower frequency-info -l | tail -1 | awk ' { print $2 } ')
-max_freq=$(($_max_freq / 1000))
+max_freq=$((_max_freq / 1000))
 
 
 [ $EVALUATE_ONLY -eq 0 ] && for freq in `seq $max_freq -100 $min_freq`
-- 
2.43.0



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