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NFC: trf7970a: Remove unnecessary FIFO reset & RSSI read

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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>
This commit is contained in:
Mark A. Greer 2014-09-02 15:12:27 -07:00 committed by Samuel Ortiz
parent aff0564aa7
commit 5974150dea
1 changed files with 0 additions and 9 deletions
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9
drivers/nfc/trf7970a.c
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@ -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) {