lib(bluetooth): use current-boot kernel log in btfwloaded

Prefer get_kernel_log when available so BT firmware-load validation is not tied only to the live dmesg ring buffer.

Keep the existing success/warn/fail decision tree intact while improving robustness on noisy targets.

Signed-off-by: Srikanth Muppandam <smuppand@qti.qualcomm.com>

Author: smuppand

Runner/utils/lib_bluetooth.sh

@@ -1903,16 +1903,25 @@ btfwloaded() {
     # Retry/transient hints: if success exists and we see these, we likely want WARN.
     transient_re="${BTFW_TRANSIENT_RE:-Retry BT power ON|retry bt power on|reset|re-init|reinit|failed.*\\(-110\\)}"
 
-    # ---- Collect recent relevant dmesg ----
-    # Filter for BT/QCA/WCN related lines; keep a reasonable window.
-    out="$(
-        dmesg 2>/dev/null \
-        | grep -i -E 'Bluetooth|hci[0-9]|QCA|wcn|btqca|WCN' \
-        | tail -n "${BTFW_DMESG_TAIL:-600}"
-    )"
+    # ---- Collect recent relevant current-boot kernel log ----
+    # Prefer get_kernel_log() so we can use journalctl -k -b when available
+    # instead of relying only on the live dmesg ring buffer.
+    if command -v get_kernel_log >/dev/null 2>&1; then
+        out="$(
+            get_kernel_log 2>/dev/null \
+            | grep -i -E 'Bluetooth|hci[0-9]|QCA|wcn|btqca|WCN' \
+            | tail -n "${BTFW_DMESG_TAIL:-600}"
+        )"
+    else
+        out="$(
+            dmesg 2>/dev/null \
+            | grep -i -E 'Bluetooth|hci[0-9]|QCA|wcn|btqca|WCN' \
+            | tail -n "${BTFW_DMESG_TAIL:-600}"
+        )"
+    fi
 
     if [ -z "$out" ]; then
-        log_warn "btfwloaded: no recent Bluetooth/QCA/WCN messages in dmesg."
+        log_warn "btfwloaded: no Bluetooth/QCA/WCN messages found in current-boot kernel log."
         return 1
     fi
 
@@ -1922,15 +1931,15 @@ btfwloaded() {
         printf '%s\n' "$out" \
         | awk -v IGNORECASE=1 -v re="$success_re" '
             $0 ~ re { n=NR }
-            END { if (n>0) print n; else print 0 }
+            END { if (n > 0) print n; else print 0 }
         '
     )"
 
     last_fatal="$(
         printf '%s\n' "$out" \
         | awk -v IGNORECASE=1 -v re="$fatal_re" '
             $0 ~ re { n=NR }
-            END { if (n>0) print n; else print 0 }
+            END { if (n > 0) print n; else print 0 }
         '
     )"
 
@@ -1945,32 +1954,32 @@ btfwloaded() {
 
     # ---- Decision tree ----
     if [ "$last_success" -eq 0 ]; then
-        log_warn "btfwloaded: no final success marker found (pattern: $success_re). Recent tail:"
+        log_warn "btfwloaded: no final success marker found (pattern: $success_re). Recent kernel-log tail:"
         printf '%s\n' "$out" | tail -n 30 >&2
         return 1
     fi
 
     # Fatal after success => FAIL (setup looked done, but then errors happened later)
     if [ "$last_fatal" -gt "$last_success" ]; then
-        log_warn "btfwloaded: fatal BT/QCA errors occurred after final setup marker; treating as FAIL."
+        log_warn "btfwloaded: fatal BT/QCA errors occurred after final setup marker in kernel log, treating as FAIL."
         printf '%s\n' "$out" | tail -n 40 >&2
         return 1
     fi
 
     # Fatal before success OR transient hints => WARN (retry scenario)
     if [ "$last_fatal" -gt 0 ] && [ "$last_fatal" -lt "$last_success" ]; then
-        log_warn "btfwloaded: transient errors occurred before final setup marker; treating as WARN."
+        log_warn "btfwloaded: transient errors occurred before final setup marker in kernel log, treating as WARN."
         printf '%s\n' "$out" | tail -n 30 >&2
         return 2
     fi
 
     if [ "$saw_transient" -eq 1 ]; then
-        log_warn "btfwloaded: retry/transient indicators seen; final setup marker present; treating as WARN."
+        log_warn "btfwloaded: retry/transient indicators seen in kernel log, final setup marker present, treating as WARN."
         printf '%s\n' "$out" | tail -n 30 >&2
         return 2
     fi
 
-    log_info "btfwloaded: firmware load/setup completed cleanly (no fatal errors after final setup marker)."
+    log_info "btfwloaded: firmware load/setup completed cleanly from current-boot kernel log (no fatal errors after final setup marker)."
     return 0
 }