Fix: Sometimes it is possible to cancel first cmd

Commands on the head of the queue can be canceled if none of its bytes
have actually been written to the modem.  This is tracked by
cmd_bytes_written variable.

diff --git a/gatchat/gatchat.c b/gatchat/gatchat.c
index 1dffd89..df65906 100644 (file)
--- a/gatchat/gatchat.c
+++ b/gatchat/gatchat.c
@@ -1202,7 +1202,8 @@ gboolean g_at_chat_cancel(GAtChat *chat, guint id)
        if (!l)
                return FALSE;
 
-       if (l == g_queue_peek_head(chat->command_queue)) {
+       if (l == g_queue_peek_head(chat->command_queue) &&
+                       chat->cmd_bytes_written > 0) {
                struct at_command *c = l->data;
 
                /* We can't actually remove it since it is most likely