device: fix build error on 32 bit systems

Increase size of the diff fields for uci_blob_diff calls, since the device
attribute list increased to >32 entries

Signed-off-by: Felix Fietkau <nbd@nbd.name>

3 files changed, 12 insertions, 13 deletions

diff --git a/bonding.c b/bonding.c
index 402c71c..1f13148 100644
--- a/bonding.c
+++ b/bonding.c
@@ -442,10 +442,10 @@ bonding_reload(struct device *dev, struct blob_attr *attr)
 	struct blob_attr *tb_dev[__DEV_ATTR_MAX];
 	struct blob_attr *tb_b[__BOND_ATTR_MAX];
 	enum dev_change_type ret = DEV_CONFIG_APPLIED;
-	unsigned long diff;
+	unsigned long diff[2] = {};
 	struct bonding_device *bdev;
 
-	BUILD_BUG_ON(sizeof(diff) < __BOND_ATTR_MAX / 8);
+	BUILD_BUG_ON(sizeof(diff[0]) < __BOND_ATTR_MAX / 8);
 	BUILD_BUG_ON(sizeof(diff) < __DEV_ATTR_MAX / 8);
 
 	bdev = container_of(dev, struct bonding_device, dev);
@@ -472,17 +472,16 @@ bonding_reload(struct device *dev, struct blob_attr *attr)
 		blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, otb_dev,
 			blob_data(bdev->config_data), blob_len(bdev->config_data));
 
-		diff = 0;
-		uci_blob_diff(tb_dev, otb_dev, &device_attr_list, &diff);
-		if (diff)
+		uci_blob_diff(tb_dev, otb_dev, &device_attr_list, diff);
+		if (diff[0] | diff[1])
 		    ret = DEV_CONFIG_RESTART;
 
 		blobmsg_parse(bonding_attrs, __BOND_ATTR_MAX, otb_b,
 			blob_data(bdev->config_data), blob_len(bdev->config_data));
 
-		diff = 0;
-		uci_blob_diff(tb_b, otb_b, &bonding_attr_list, &diff);
-		if (diff & ~(1 << BOND_ATTR_PORTS))
+		diff[0] = 0;
+		uci_blob_diff(tb_b, otb_b, &bonding_attr_list, diff);
+		if (diff[0] & ~(1 << BOND_ATTR_PORTS))
 		    ret = DEV_CONFIG_RESTART;
 
 		bonding_config_init(dev);
diff --git a/bridge.c b/bridge.c
index 63306c5..7a633ab 100644
--- a/bridge.c
+++ b/bridge.c
@@ -1252,7 +1252,7 @@ bridge_reload(struct device *dev, struct blob_attr *attr)
 	struct blob_attr *tb_br[__BRIDGE_ATTR_MAX];
 	enum dev_change_type ret = DEV_CONFIG_APPLIED;
 	struct bridge_state *bst;
-	unsigned long diff[2];
+	unsigned long diff[2] = {};
 
 	BUILD_BUG_ON(sizeof(diff) < __BRIDGE_ATTR_MAX / BITS_PER_LONG);
 	BUILD_BUG_ON(sizeof(diff) < __DEV_ATTR_MAX / BITS_PER_LONG);
@@ -1279,7 +1279,6 @@ bridge_reload(struct device *dev, struct blob_attr *attr)
 		blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, otb_dev,
 			blob_data(bst->config_data), blob_len(bst->config_data));
 
-		diff[0] = diff[1] = 0;
 		uci_blob_diff(tb_dev, otb_dev, &device_attr_list, diff);
 		if (diff[0] | diff[1]) {
 			ret = DEV_CONFIG_RESTART;
diff --git a/interface.c b/interface.c
index 151dc9d..b2c1230 100644
--- a/interface.c
+++ b/interface.c
@@ -1248,7 +1248,7 @@ interface_device_config_changed(struct interface *if_old, struct interface *if_n
 	struct blob_attr *ntb[__DEV_ATTR_MAX];
 	struct blob_attr *otb[__DEV_ATTR_MAX];
 	struct device *dev = if_old->main_dev.dev;
-	unsigned long diff = 0;
+	unsigned long diff[2] = {};
 
 	BUILD_BUG_ON(sizeof(diff) < __DEV_ATTR_MAX / 8);
 
@@ -1267,8 +1267,9 @@ interface_device_config_changed(struct interface *if_old, struct interface *if_n
 	blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, ntb,
 		blob_data(if_new->config), blob_len(if_new->config));
 
-	uci_blob_diff(ntb, otb, &device_attr_list, &diff);
-	return diff;
+	uci_blob_diff(ntb, otb, &device_attr_list, diff);
+
+	return diff[0] | diff[1];
 }
 
 static void