D40223.1794093913.diff
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	diff --git a/stand/efi/libefi/eficom.c b/stand/efi/libefi/eficom.c
	--- a/stand/efi/libefi/eficom.c
	+++ b/stand/efi/libefi/eficom.c
	@@ -329,6 +329,16 @@
	}
	}

	+ /*
	+ * If there's no sio, then the device isn't there, so just return since
	+ * the present flags aren't yet set.
	+ */
	+ if (comc_port->sio == NULL) {
	+ free(comc_port);
	+ comc_port = NULL;
	+ return;
	+ }
	+
	if (env != NULL)
	unsetenv("efi_com_port");
	snprintf(value, sizeof (value), "%u", comc_port->ioaddr);