From 7a20ac08ca9c92dd8c291547d8212961182ecc3c Mon Sep 17 00:00:00 2001
From: Luxferre <lux@ferre>
Date: Sun, 25 Oct 2026 10:04:47 +0200
Subject: [PATCH] flash-edl: block host qcserial driver and remove sleep after
 Fastboot EDL kick

---
 flash-edl.py | 38 ++++++++++++++++++++------------------
 flash-edl.sh | 24 ++++++++++++++++++++++++
 2 files changed, 44 insertions(+), 18 deletions(-)

diff --git a/flash-edl.py b/flash-edl.py
index 89f58d8..cd3b8af 100755
--- a/flash-edl.py
+++ b/flash-edl.py
@@ -110,12 +110,15 @@ def _fb_upgrade_lk2nd_and_edl(fb_dev):
       time.sleep(0.3)
       _fb_send_edl(new_fb)
       usb.util.dispose_resources(new_fb)
-      time.sleep(1.0)
       return
     time.sleep(0.5)
 
 
+_fb_edl_kicked = False
+
+
 def try_kick_into_edl():
+  global _fb_edl_kicked
   try:
     res = subprocess.run(
       ["adb", "get-state"],
@@ -127,7 +130,6 @@ def try_kick_into_edl():
     if res.returncode == 0 and "device" in res.stdout:
       print("[*] Detected device in ADB mode. Sending 'adb reboot edl'...")
       subprocess.run(["adb", "reboot", "edl"], timeout=5)
-      time.sleep(1)
       return
   except Exception:
     pass
@@ -136,13 +138,13 @@ def try_kick_into_edl():
   try:
     fb_dev = usb.core.find(idVendor=0x18D1, idProduct=0xD00D)
     if fb_dev is not None:
-      print("[*] Detected device in Fastboot mode (18d1:d00d). Sending 'oem reboot-edl'...")
-      _fb_send_edl(fb_dev)
-      usb.util.dispose_resources(fb_dev)
-      time.sleep(1.5)
-      fb_still = usb.core.find(idVendor=0x18D1, idProduct=0xD00D)
-      if fb_still is not None:
-        _fb_upgrade_lk2nd_and_edl(fb_still)
+      if not _fb_edl_kicked:
+        _fb_edl_kicked = True
+        print("[*] Detected device in Fastboot mode (18d1:d00d). Sending 'oem reboot-edl'...")
+        _fb_send_edl(fb_dev)
+        usb.util.dispose_resources(fb_dev)
+      else:
+        _fb_upgrade_lk2nd_and_edl(fb_dev)
       return
   except Exception:
     pass
@@ -160,15 +162,12 @@ def try_kick_into_edl():
       rc = subprocess.run(["fastboot", "oem", "reboot-edl"], timeout=5)
       if rc.returncode != 0:
         subprocess.run(["fastboot", "oem", "edl"], timeout=5)
-      time.sleep(1)
   except Exception:
     pass
 
 
 def wait_for_edl_usb(vid, pid, device_label, timeout_sec=0):
   cdc = usb_class(vid=vid, pid=pid)
-  try_kick_into_edl()
-
   print(
     f"[*] Waiting for {device_label} in EDL mode "
     f"(USB {vid:04x}:{pid:04x} Qualcomm QDLoader 9008)..."
@@ -179,6 +178,8 @@ def wait_for_edl_usb(vid, pid, device_label, timeout_sec=0):
   print("      3) Plug in via an EDL deep-flash cable")
   print("      4) Run 'adb reboot edl' or 'fastboot oem reboot-edl'")
 
+  try_kick_into_edl()
+
   start_ts = time.time()
   dots = 0
   while not cdc.connected:
@@ -191,7 +192,7 @@ def wait_for_edl_usb(vid, pid, device_label, timeout_sec=0):
           "Please run via sudo (e.g. sudo ./flash-edl.sh)."
         )
         sys.exit(1)
-      time.sleep(0.5)
+      time.sleep(0.05)
       continue
 
     if cdc.connected:
@@ -206,15 +207,16 @@ def wait_for_edl_usb(vid, pid, device_label, timeout_sec=0):
       print(f"[!] Timed out after {timeout_sec} seconds waiting for EDL device.")
       sys.exit(1)
 
-    if dots > 0 and dots % 10 == 0:
+    if dots > 0 and dots % 100 == 0:
       try_kick_into_edl()
 
-    sys.stdout.write(".")
-    sys.stdout.flush()
+    if dots % 20 == 0:
+      sys.stdout.write(".")
+      sys.stdout.flush()
     dots += 1
-    if dots % 40 == 0:
+    if dots % 800 == 0:
       sys.stdout.write("\n")
-    time.sleep(1)
+    time.sleep(0.05)
 
   return cdc
 
diff --git a/flash-edl.sh b/flash-edl.sh
index d10d6e3..d5fffe4 100755
--- a/flash-edl.sh
+++ b/flash-edl.sh
@@ -27,15 +27,39 @@ if command -v systemctl >/dev/null 2>&1; then
     systemctl stop ModemManager 2>/dev/null || true
     MM_WAS_ACTIVE=1
   fi
+elif command -v sv >/dev/null 2>&1 && [ -e /var/service/ModemManager ]; then
+  if sv status ModemManager 2>/dev/null | grep -q "^run:"; then
+    echo "[*] Temporarily stopping host ModemManager service during EDL flash..."
+    sv stop ModemManager 2>/dev/null || true
+    MM_WAS_ACTIVE=2
+  fi
+fi
+
+QCSERIAL_CONF="/run/modprobe.d/bananarchy-edl.conf"
+if [ "$(id -u)" -eq 0 ]; then
+  mkdir -p /run/modprobe.d 2>/dev/null || true
+  printf "blacklist qcserial\ninstall qcserial /bin/true\n" > "$QCSERIAL_CONF" 2>/dev/null || true
+  if lsmod 2>/dev/null | grep -q "^qcserial "; then
+    echo "[*] Unloading host qcserial kernel module so it does not claim 05c6:9008..."
+    modprobe -r qcserial 2>/dev/null || rmmod qcserial 2>/dev/null || true
+  fi
+  udevadm control --reload 2>/dev/null || true
 fi
 
 cleanup() {
+  if [ -f "$QCSERIAL_CONF" ]; then
+    rm -f "$QCSERIAL_CONF" 2>/dev/null || true
+    udevadm control --reload 2>/dev/null || true
+  fi
   if [ -n "${SUDO_UID:-}" ] && [ -n "${SUDO_GID:-}" ] && [ -d "$BASE_DIR/backup" ]; then
     chown -R "$SUDO_UID:$SUDO_GID" "$BASE_DIR/backup" 2>/dev/null || true
   fi
   if [ "$MM_WAS_ACTIVE" -eq 1 ]; then
     echo "[*] Restarting host ModemManager service..."
     systemctl start ModemManager 2>/dev/null || true
+  elif [ "$MM_WAS_ACTIVE" -eq 2 ]; then
+    echo "[*] Restarting host ModemManager service..."
+    sv start ModemManager 2>/dev/null || true
   fi
 }
 trap cleanup EXIT INT TERM