NFC: nfcmrvl: avoid UART break control during FW download

BootROM does not support any form of power management during
FW download. On UART, the driver shall not try to send breaks.

Signed-off-by: Vincent Cuissard <cuissard@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/nfc/nfcmrvl/uart.c b/drivers/nfc/nfcmrvl/uart.c
index f3d041c4f249..b33249bec419 100644
--- a/drivers/nfc/nfcmrvl/uart.c
+++ b/drivers/nfc/nfcmrvl/uart.c
@@ -152,10 +152,6 @@ static int nfcmrvl_nci_uart_open(struct nci_uart *nu)
         nu->drv_data = priv;
         nu->ndev = priv->ndev;
 
-        /* Set BREAK */
-        if (priv->config.break_control && nu->tty->ops->break_ctl)
-                nu->tty->ops->break_ctl(nu->tty, -1);
-
         return 0;
 }
 
@@ -174,6 +170,9 @@ static void nfcmrvl_nci_uart_tx_start(struct nci_uart *nu)
 {
         struct nfcmrvl_private *priv = (struct nfcmrvl_private *)nu->drv_data;
 
+        if (priv->ndev->nfc_dev->fw_download_in_progress)
+                return;
+
         /* Remove BREAK to wake up the NFCC */
         if (priv->config.break_control && nu->tty->ops->break_ctl) {
                 nu->tty->ops->break_ctl(nu->tty, 0);
@@ -185,6 +184,9 @@ static void nfcmrvl_nci_uart_tx_done(struct nci_uart *nu)
 {
         struct nfcmrvl_private *priv = (struct nfcmrvl_private *)nu->drv_data;
 
+        if (priv->ndev->nfc_dev->fw_download_in_progress)
+                return;
+
         /*
         ** To ensure that if the NFCC goes in DEEP SLEEP sate we can wake him
         ** up. we set BREAK. Once we will be ready to send again we will remove