From 632c016ab8ba1f98262bd6242b38d73ee4ae652e Mon Sep 17 00:00:00 2001 From: Eric Lapuyade Date: Tue, 2 Oct 2012 17:27:36 +0200 Subject: NFC: HCI check presence must not fail when driver doesn't support it When the driver does not support checking the tag is still present, it must return -EOPNOTSUPP. The NFC Core will then stop asking and not report a tag lost event to user space. Signed-off-by: Eric Lapuyade Signed-off-by: Samuel Ortiz --- net/nfc/core.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'net/nfc/core.c') diff --git a/net/nfc/core.c b/net/nfc/core.c index 479bee36dc3e..4cb069766ce5 100644 --- a/net/nfc/core.c +++ b/net/nfc/core.c @@ -697,6 +697,8 @@ static void nfc_check_pres_work(struct work_struct *work) if (dev->active_target && timer_pending(&dev->check_pres_timer) == 0) { rc = dev->ops->check_presence(dev, dev->active_target); + if (rc == -EOPNOTSUPP) + goto exit; if (!rc) { mod_timer(&dev->check_pres_timer, jiffies + msecs_to_jiffies(NFC_CHECK_PRES_FREQ_MS)); @@ -708,6 +710,7 @@ static void nfc_check_pres_work(struct work_struct *work) } } +exit: device_unlock(&dev->dev); } -- cgit