[flashrom] [PATCH] Shutdown serial port in pony_spi

[Carl-Daniel Hailfinger]

Implement serial port shutdown both for regular termination and error
condition in pony_spi.

[Yes, the existing code is not exactly beautiful, but a rewrite shortly
before 0.9.9 is too risky.]

Signed-off-by: Carl-Daniel Hailfinger

Index: flashrom-pony_close_fd/pony_spi.c
===================================================================
--- flashrom-pony_close_fd/pony_spi.c	(Revision 1946)
+++ flashrom-pony_close_fd/pony_spi.c	(Arbeitskopie)
@@ -103,6 +103,20 @@
    .half_period = 0,
 };

+static int pony_spi_shutdown(void *data)
+{
+	int ret = 0;
+
+	/* Shut down serial port communication */
+	ret = serialport_shutdown(NULL);
+	if (ret)
+		msg_pdbg("Pony SPI shutdown failed.\n");
+	else
+		msg_pdbg("Pony SPI shutdown completed.\n");
+
+	return ret;
+}
+
 int pony_spi_init(void)
 {
    int i, data_out;
@@ -120,6 +134,11 @@
    		free(arg);
    		return 1;
    	}
+		if (register_shutdown(pony_spi_shutdown, NULL) != 0) {
+			free(arg);
+			serialport_shutdown(NULL);
+			return 1;
+		}
    	have_device++;
    }
    free(arg);