diff --git a/rootdir/bin/init.qcom.post_boot.sh b/rootdir/bin/init.qcom.post_boot.sh
index 7e6bffc3..65b9c27d 100644
--- a/rootdir/bin/init.qcom.post_boot.sh
+++ b/rootdir/bin/init.qcom.post_boot.sh
@@ -2343,11 +2343,6 @@ esac
 case "$target" in
     "sdm660" | "sdm636")
 
-        # Set the default IRQ affinity to the primary cluster. When a
-        # CPU is isolated/hotplugged, the IRQ affinity is adjusted
-        # to one of the CPU from the default IRQ affinity mask.
-        echo f > /proc/irq/default_smp_affinity
-
         if [ -f /sys/devices/soc0/soc_id ]; then
                 soc_id=`cat /sys/devices/soc0/soc_id`
         else