From a440f1aa74da9cb1a77afcfadb12e1d4a78e7e02 Mon Sep 17 00:00:00 2001 From: Saurabh Sengar Date: Mon, 21 Dec 2015 00:29:30 +0530 Subject: [PATCH] NFC: add rx delay sysfs parameter for nfcsim workqueue added the rx delay parameter as a device tunable parameter. Signed-off-by: Saurabh Sengar Signed-off-by: Samuel Ortiz --- drivers/nfc/nfcsim.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/nfc/nfcsim.c b/drivers/nfc/nfcsim.c index 26ac9e5fa1ab..93aaca586858 100644 --- a/drivers/nfc/nfcsim.c +++ b/drivers/nfc/nfcsim.c @@ -32,6 +32,8 @@ #define NFCSIM_POLL_TARGET 2 #define NFCSIM_POLL_DUAL (NFCSIM_POLL_INITIATOR | NFCSIM_POLL_TARGET) +#define RX_DEFAULT_DELAY 5 + struct nfcsim { struct nfc_dev *nfc_dev; @@ -51,6 +53,8 @@ struct nfcsim { u8 initiator; + u32 rx_delay; + data_exchange_cb_t cb; void *cb_context; @@ -320,10 +324,9 @@ static int nfcsim_tx(struct nfc_dev *nfc_dev, struct nfc_target *target, * If packet transmission occurs immediately between them, we have a * non-stop flow of several tens of thousands SYMM packets per second * and a burning cpu. - * - * TODO: Add support for a sysfs entry to control this delay. */ - queue_delayed_work(wq, &peer->recv_work, msecs_to_jiffies(5)); + queue_delayed_work(wq, &peer->recv_work, + msecs_to_jiffies(dev->rx_delay)); mutex_unlock(&peer->lock); @@ -461,6 +464,7 @@ static struct nfcsim *nfcsim_init_dev(void) if (rc) goto free_nfc_dev; + dev->rx_delay = RX_DEFAULT_DELAY; return dev; free_nfc_dev: