NFC: trf7970a: Remove unnecessary FIFO reset & RSSI read

It is no longer necessary to reset the FIFO and
read the 'RSSI Levels and Oscillator Status Register'
so remove that code.

Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 0 insertions, 9 deletions

diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c
index e7f22a44dc52..c6216c1cc4b9 100644
--- a/drivers/nfc/trf7970a.c
+++ b/drivers/nfc/trf7970a.c
@@ -478,8 +478,6 @@ static int trf7970a_read_irqstatus(struct trf7970a *trf, u8 *status)
 
 static void trf7970a_send_upstream(struct trf7970a *trf)
 {
-        u8 rssi;
-
         dev_kfree_skb_any(trf->tx_skb);
         trf->tx_skb = NULL;
 
@@ -488,13 +486,6 @@ static void trf7970a_send_upstream(struct trf7970a *trf)
                                 16, 1, trf->rx_skb->data, trf->rx_skb->len,
                                 false);
 
-        /* According to the manual it is "good form" to reset the fifo and
-         * read the RSSI levels & oscillator status register here.  It doesn't
-         * explain why.
-         */
-        trf7970a_cmd(trf, TRF7970A_CMD_FIFO_RESET);
-        trf7970a_read(trf, TRF7970A_RSSI_OSC_STATUS, &rssi);
-
         trf->state = TRF7970A_ST_IDLE;
 
         if (trf->aborting) {