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Commit 5974150d authored by Mark A. Greer's avatar Mark A. Greer Committed by Samuel Ortiz
Browse files

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: default avatarMark A. Greer <mgreer@animalcreek.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent aff0564a

drivers/nfc/trf7970a.c

+0 −9
Original line number Diff line number Diff line
@@ -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) {