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-rw-r--r--net/nfc/core.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/net/nfc/core.c b/net/nfc/core.c
index 6ceee8e..40d2527 100644
--- a/net/nfc/core.c
+++ b/net/nfc/core.c
@@ -27,6 +27,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
+#include <linux/rfkill.h>
#include <linux/nfc.h>
#include <net/genetlink.h>
@@ -58,6 +59,11 @@ int nfc_dev_up(struct nfc_dev *dev)
device_lock(&dev->dev);
+ if (dev->rfkill && rfkill_blocked(dev->rfkill)) {
+ rc = -ERFKILL;
+ goto error;
+ }
+
if (!device_is_registered(&dev->dev)) {
rc = -ENODEV;
goto error;
@@ -117,6 +123,24 @@ error:
return rc;
}
+static int nfc_rfkill_set_block(void *data, bool blocked)
+{
+ struct nfc_dev *dev = data;
+
+ pr_debug("%s blocked %d", dev_name(&dev->dev), blocked);
+
+ if (!blocked)
+ return 0;
+
+ nfc_dev_down(dev);
+
+ return 0;
+}
+
+static const struct rfkill_ops nfc_rfkill_ops = {
+ .set_block = nfc_rfkill_set_block,
+};
+
/**
* nfc_start_poll - start polling for nfc targets
*
@@ -143,6 +167,11 @@ int nfc_start_poll(struct nfc_dev *dev, u32 im_protocols, u32 tm_protocols)
goto error;
}
+ if (!dev->dev_up) {
+ rc = -ENODEV;
+ goto error;
+ }
+
if (dev->polling) {
rc = -EBUSY;
goto error;
@@ -835,6 +864,15 @@ int nfc_register_device(struct nfc_dev *dev)
pr_debug("The userspace won't be notified that the device %s was added\n",
dev_name(&dev->dev));
+ dev->rfkill = rfkill_alloc(dev_name(&dev->dev), &dev->dev,
+ RFKILL_TYPE_NFC, &nfc_rfkill_ops, dev);
+ if (dev->rfkill) {
+ if (rfkill_register(dev->rfkill) < 0) {
+ rfkill_destroy(dev->rfkill);
+ dev->rfkill = NULL;
+ }
+ }
+
return 0;
}
EXPORT_SYMBOL(nfc_register_device);
@@ -852,6 +890,11 @@ void nfc_unregister_device(struct nfc_dev *dev)
id = dev->idx;
+ if (dev->rfkill) {
+ rfkill_unregister(dev->rfkill);
+ rfkill_destroy(dev->rfkill);
+ }
+
if (dev->ops->check_presence) {
device_lock(&dev->dev);
dev->shutting_down = true;
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