broadband-modem-mbim: account for race condition in quick hot swap case

On MBIM modems, when the SIM is ejected and re-inserted in a quick manner,
the state machine logic encounters a race condition and eventually, the
modem response for subscriber status is ignored. This change accounts
for that state transition without erroring out.

Fixes #672.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/mm-iface-modem.c b/src/mm-iface-modem.c
index b30f710e9..12f262234 100644
--- a/src/mm-iface-modem.c
+++ b/src/mm-iface-modem.c
@@ -604,6 +604,12 @@ load_unlock_required_ready (MMIfaceModem *self,
             return;
         }
 
+        /* If the error indicates that retry logic needs to be reset... reset the retry count to 0 */
+        if (g_error_matches (error, MM_CORE_ERROR, MM_CORE_ERROR_RESET_AND_RETRY)) {
+            ctx->retries = 0;
+            mm_obj_info (self, "restarting unlock required check");
+        }
+
         /* For the remaining ones, retry if possible */
         if (ctx->retries < ctx->max_retries) {
             ctx->retries++;