Fix build issues in case NUM_AP is 0.

1 files changed, 49 insertions, 44 deletions

diff --git a/io-module/mts_io.c b/io-module/mts_io.c
index 2454821..deb2d92 100644
--- a/io-module/mts_io.c
+++ b/io-module/mts_io.c
@@ -74,18 +74,6 @@ static struct mts_id_eeprom_layout id_eeprom;
 #define NUM_AP 0
 #endif
 
-#if NUM_AP > 0
-/* accessory card EEPROMs */
-extern uint8_t mts_ap_eeprom[NUM_AP][512];
-static struct mts_ap_eeprom_layout ap_eeprom[NUM_AP];
-/* kobject pointers for the apX subdirectories that correspond to the accessory ports */
-static struct kobject *ap_subdirs[NUM_AP];
-/* attribute groups for the accessory ports*/
-static struct attribute_group ap_attr_groups[NUM_AP];
-#endif
-
-static struct ap_info* port_info[NUM_AP];
-
 static struct platform_device *mts_io_platform_device;
 static struct attribute_group *attr_group;
 static struct gpio_pin *gpio_pins;
@@ -100,20 +88,13 @@ static struct timer_list radio_reset_timer;
 static volatile int radio_reset_timer_is_start = 0;
 static struct timer_list radio_reset_available_timer;
 static volatile int radio_reset_available_timer_is_start = 0;
-static time_t time_now_secs();
+static time_t time_now_secs(void);
 static void radio_reset_available_timer_callback(unsigned long data);
 static void radio_reset_timer_callback(unsigned long data);
 
 /* generic GPIO support */
 #include "gpio.c"
 
-/* accessory card support */
-#include "mtac.c"
-#include "mtac_gpiob.c"
-#include "mtac_mfser.c"
-#include "mtac_eth.c"
-#include "mtac_lora.c"
-
 /* reset button handling */
 #define RESET_CHECK_PER_SEC		8
 #define RESET_INTERVAL		(HZ / RESET_CHECK_PER_SEC)
@@ -333,7 +314,7 @@ static DEVICE_ATTR_MTS(dev_attr_radio_power, "radio-power",
 	mts_attr_show_gpio_pin, mts_attr_store_gpio_pin);
 
 /* backoff-timers */
-static time_t time_now_secs()
+static time_t time_now_secs(void)
 {
 	struct timespec ts = current_kernel_time();
 	return ts.tv_sec;
@@ -457,7 +438,6 @@ static ssize_t mts_attr_store_radio_reset_backoffs_index(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count)
 {
 	int value;
-	int err;
 
 	if (sscanf(buf, "%d", &value) != 1) {
 		return -EINVAL;
@@ -644,6 +624,25 @@ static DEVICE_ATTR_RO_MTS(dev_attr_eth_mac, "mac-eth",
 /* include per-device pins and attributes */
 #include "mtcdt.c"
 
+#if NUM_AP > 0
+
+/* accessory card EEPROMs */
+extern uint8_t mts_ap_eeprom[NUM_AP][512];
+static struct mts_ap_eeprom_layout ap_eeprom[NUM_AP];
+/* kobject pointers for the apX subdirectories that correspond to the accessory ports */
+static struct kobject *ap_subdirs[NUM_AP];
+/* attribute groups for the accessory ports*/
+static struct attribute_group ap_attr_groups[NUM_AP];
+/* info for accessory port (contains function pointers for setup and teardown and and useful info) */
+static struct ap_info* port_info[NUM_AP];
+
+/* accessory card support */
+#include "mtac.c"
+#include "mtac_gpiob.c"
+#include "mtac_mfser.c"
+#include "mtac_eth.c"
+#include "mtac_lora.c"
+
 static bool load_port(int port) {
 	int port_index = port - 1;
 	memcpy(&ap_eeprom[port_index], mts_ap_eeprom[port_index], sizeof(mts_ap_eeprom[port_index]));
@@ -727,14 +726,32 @@ static bool load_port(int port) {
 
 static void init_accessory_ports(void)
 {
-	int i;
-	for (i = 1; i <= NUM_AP; i++) {
-		if (! load_port(i)) {
-			log_error("failed to load accessory card in port %d", i);
-		}
-	}
+	int port_index;
+
+	for (port_index = 0; port_index < NUM_AP; port_index++) {
+        port_info[port_index] = NULL;
+        if (! load_port(port_index+1)) {
+            log_error("failed to load accessory card in port %d", port_index);
+        }
+    }
 }
 
+static void teardown_accessory_ports(void)
+{
+    int port_index;
+
+    for (port_index = 0; port_index < NUM_AP; port_index++) {
+        if (port_info[port_index]) {
+            port_info[port_index]->teardown(port_index+1);
+            kfree(port_info[port_index]);
+        }
+    }
+}
+#else /* NUM_AP > 0 */
+static void init_accessory_ports(void) {}
+static void teardown_accessory_ports(void) {}
+#endif
+
 static int mts_id_eeprom_load(void)
 {
 	int i;
@@ -809,19 +826,13 @@ static int mts_id_eeprom_load(void)
 
 static void cleanup(void)
 {
-	int port;
-	int port_index;
-
 	log_info("cleaning up....");
 	if (mts_io_platform_device) {
 		platform_device_unregister(mts_io_platform_device);
 	}
-	for (port_index = 0, port = 1; port_index < NUM_AP; port_index++, port++) {
-		if (port_info[port_index]) {
-			port_info[port_index]->teardown(port);
-			kfree(port_info[port_index]);
-		}
-	}
+
+	teardown_accessory_ports();
+
 	log_info("done cleaning up....");
 }
 
@@ -829,7 +840,6 @@ static int __init mts_io_init(void)
 {
 	struct gpio_pin *pin;
 	int ret;
-	int port_index;
 
 	log_info("init: " DRIVER_VERSION);
 	
@@ -851,12 +861,7 @@ static int __init mts_io_init(void)
 		return ret;
 	}
 
-	if (NUM_AP) {
-		for (port_index = 0; port_index < NUM_AP; port_index++) {
-			port_info[port_index] = NULL;
-		}
-		init_accessory_ports();
-	}
+	init_accessory_ports();
 
 	ret = sysfs_create_group(&mts_io_platform_device->dev.kobj, attr_group);
 	if (ret) {