From db71508d61927a23ccdad33e3c94cd8ca90c6a2f Mon Sep 17 00:00:00 2001
From: Adeeb Shihadeh <adeebshihadeh@gmail.com>
Date: Thu, 8 Feb 2024 16:40:43 -0800
Subject: [PATCH] sensord: fix IRQ affinity (#31384)

old-commit-hash: 135deb43246ec61eeb9c8bce16a59ee8ea58c1e3
---
 system/sensord/sensors_qcom2.cc | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/system/sensord/sensors_qcom2.cc b/system/sensord/sensors_qcom2.cc
index 36d9b4a13e..9cbc24864d 100644
--- a/system/sensord/sensors_qcom2.cc
+++ b/system/sensord/sensors_qcom2.cc
@@ -134,7 +134,13 @@ int sensor_loop(I2CBus *i2c_bus_imu) {
   // increase interrupt quality by pinning interrupt and process to core 1
   setpriority(PRIO_PROCESS, 0, -18);
   util::set_core_affinity({1});
-  std::system("sudo su -c 'echo 1 > /proc/irq/336/smp_affinity_list'");
+
+  // TODO: get the IRQ number from gpiochip
+  std::string irq_path = "/proc/irq/336/smp_affinity_list";
+  if (!util::file_exists(irq_path)) {
+    irq_path = "/proc/irq/335/smp_affinity_list";
+  }
+  std::system(util::string_format("sudo su -c 'echo 1 > %s'", irq_path.c_str()).c_str());
 
   // thread for reading events via interrupts
   threads.emplace_back(&interrupt_loop, std::ref(sensors_init));