From: Eric Lapuyade <eric.lapuyade@xxxxxxxxx>
There can ever be only one call to nfc_targets_found() after polling
has been engaged. This could be from a target discovered event from
the driver, or from an error handler to notify poll will never complete.
Signed-off-by: Eric Lapuyade <eric.lapuyade@xxxxxxxxx>
Signed-off-by: Samuel Ortiz <sameo@xxxxxxxxxxxxxxx>
---
net/nfc/core.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/net/nfc/core.c b/net/nfc/core.c
index 32f2832..94ccf07 100644
--- a/net/nfc/core.c
+++ b/net/nfc/core.c
@@ -571,13 +571,18 @@ int nfc_targets_found(struct nfc_dev *dev,
pr_debug("dev_name=%s n_targets=%d\n", dev_name(&dev->dev), n_targets);
- dev->polling = false;
-
for (i = 0; i < n_targets; i++)
targets[i].idx = dev->target_next_idx++;
device_lock(&dev->dev);
+ if (dev->polling == false) {
+ device_unlock(&dev->dev);
+ return 0;
+ }
+
+ dev->polling = false;
+
dev->targets_generation++;
kfree(dev->targets);
--
1.7.10
--
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