nfc: replace improper check device_is_registered() in netlink related functions

[platform/kernel/linux-rpi.git] / net / nfc / core.c

diff --git a/net/nfc/core.c b/net/nfc/core.c
index dc7a240..5b286e1 100644 (file)
--- a/net/nfc/core.c
+++ b/net/nfc/core.c
@@ -38,7 +38,7 @@ int nfc_fw_download(struct nfc_dev *dev, const char *firmware_name)
 
        device_lock(&dev->dev);
 
-       if (!device_is_registered(&dev->dev)) {
+       if (dev->shutting_down) {
                rc = -ENODEV;
                goto error;
        }
@@ -94,7 +94,7 @@ int nfc_dev_up(struct nfc_dev *dev)
 
        device_lock(&dev->dev);
 
-       if (!device_is_registered(&dev->dev)) {
+       if (dev->shutting_down) {
                rc = -ENODEV;
                goto error;
        }
@@ -142,7 +142,7 @@ int nfc_dev_down(struct nfc_dev *dev)
 
        device_lock(&dev->dev);
 
-       if (!device_is_registered(&dev->dev)) {
+       if (dev->shutting_down) {
                rc = -ENODEV;
                goto error;
        }
@@ -207,7 +207,7 @@ int nfc_start_poll(struct nfc_dev *dev, u32 im_protocols, u32 tm_protocols)
 
        device_lock(&dev->dev);
 
-       if (!device_is_registered(&dev->dev)) {
+       if (dev->shutting_down) {
                rc = -ENODEV;
                goto error;
        }
@@ -246,7 +246,7 @@ int nfc_stop_poll(struct nfc_dev *dev)
 
        device_lock(&dev->dev);
 
-       if (!device_is_registered(&dev->dev)) {
+       if (dev->shutting_down) {
                rc = -ENODEV;
                goto error;
        }
@@ -291,7 +291,7 @@ int nfc_dep_link_up(struct nfc_dev *dev, int target_index, u8 comm_mode)
 
        device_lock(&dev->dev);
 
-       if (!device_is_registered(&dev->dev)) {
+       if (dev->shutting_down) {
                rc = -ENODEV;
                goto error;
        }
@@ -335,7 +335,7 @@ int nfc_dep_link_down(struct nfc_dev *dev)
 
        device_lock(&dev->dev);
 
-       if (!device_is_registered(&dev->dev)) {
+       if (dev->shutting_down) {
                rc = -ENODEV;
                goto error;
        }
@@ -401,7 +401,7 @@ int nfc_activate_target(struct nfc_dev *dev, u32 target_idx, u32 protocol)
 
        device_lock(&dev->dev);
 
-       if (!device_is_registered(&dev->dev)) {
+       if (dev->shutting_down) {
                rc = -ENODEV;
                goto error;
        }
@@ -448,7 +448,7 @@ int nfc_deactivate_target(struct nfc_dev *dev, u32 target_idx, u8 mode)
 
        device_lock(&dev->dev);
 
-       if (!device_is_registered(&dev->dev)) {
+       if (dev->shutting_down) {
                rc = -ENODEV;
                goto error;
        }
@@ -495,7 +495,7 @@ int nfc_data_exchange(struct nfc_dev *dev, u32 target_idx, struct sk_buff *skb,
 
        device_lock(&dev->dev);
 
-       if (!device_is_registered(&dev->dev)) {
+       if (dev->shutting_down) {
                rc = -ENODEV;
                kfree_skb(skb);
                goto error;
@@ -552,7 +552,7 @@ int nfc_enable_se(struct nfc_dev *dev, u32 se_idx)
 
        device_lock(&dev->dev);
 
-       if (!device_is_registered(&dev->dev)) {
+       if (dev->shutting_down) {
                rc = -ENODEV;
                goto error;
        }
@@ -601,7 +601,7 @@ int nfc_disable_se(struct nfc_dev *dev, u32 se_idx)
 
        device_lock(&dev->dev);
 
-       if (!device_is_registered(&dev->dev)) {
+       if (dev->shutting_down) {
                rc = -ENODEV;
                goto error;
        }
@@ -1134,6 +1134,7 @@ int nfc_register_device(struct nfc_dev *dev)
                        dev->rfkill = NULL;
                }
        }
+       dev->shutting_down = false;
        device_unlock(&dev->dev);
 
        rc = nfc_genl_device_added(dev);
@@ -1166,12 +1167,10 @@ void nfc_unregister_device(struct nfc_dev *dev)
                rfkill_unregister(dev->rfkill);
                rfkill_destroy(dev->rfkill);
        }
+       dev->shutting_down = true;
        device_unlock(&dev->dev);
 
        if (dev->ops->check_presence) {
-               device_lock(&dev->dev);
-               dev->shutting_down = true;
-               device_unlock(&dev->dev);
                del_timer_sync(&dev->check_pres_timer);
                cancel_work_sync(&dev->check_pres_work);
        }