Merge tag 'nfc-fixes-4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-fixes

Samuel Ortiz says:

====================
NFC 4.4 fixes

This is the 1st NFC fixes pull request for 4.4.

It includes bug fixes and one fix for a build failure, all of them
introduced with the first NFC pull request for 4.4.

We have:

- Fix nfcmrvl SPI driver potential build error due to a broken Kconfig
  dependency.
- A few fixes for the firmware download implementation for the nfcmrvl
  UART driver.
- A GPIO allocation leak for the nfcmrvl driver.
- One code simplification for the nfcmrvl DT handling.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 22 insertions, 33 deletions

diff --git a/drivers/nfc/nfcmrvl/Kconfig b/drivers/nfc/nfcmrvl/Kconfig
index 444ca94697d9..670af76922e0 100644
--- a/drivers/nfc/nfcmrvl/Kconfig
+++ b/drivers/nfc/nfcmrvl/Kconfig
@@ -44,7 +44,7 @@ config NFC_MRVL_I2C
 
 config NFC_MRVL_SPI
         tristate "Marvell NFC-over-SPI driver"
-        depends on NFC_MRVL && SPI
+        depends on NFC_MRVL && NFC_NCI_SPI
         help
           Marvell NFC-over-SPI driver.
 
diff --git a/drivers/nfc/nfcmrvl/fw_dnld.c b/drivers/nfc/nfcmrvl/fw_dnld.c
index bfa771392b1f..f8dcdf4b24f6 100644
--- a/drivers/nfc/nfcmrvl/fw_dnld.c
+++ b/drivers/nfc/nfcmrvl/fw_dnld.c
@@ -113,9 +113,12 @@ static void fw_dnld_over(struct nfcmrvl_private *priv, u32 error)
         }
 
         atomic_set(&priv->ndev->cmd_cnt, 0);
-        del_timer_sync(&priv->ndev->cmd_timer);
 
-        del_timer_sync(&priv->fw_dnld.timer);
+        if (timer_pending(&priv->ndev->cmd_timer))
+                del_timer_sync(&priv->ndev->cmd_timer);
+
+        if (timer_pending(&priv->fw_dnld.timer))
+                del_timer_sync(&priv->fw_dnld.timer);
 
         nfc_info(priv->dev, "FW loading over (%d)]\n", error);
 
@@ -472,9 +475,12 @@ void	nfcmrvl_fw_dnld_deinit(struct nfcmrvl_private *priv)
 void    nfcmrvl_fw_dnld_recv_frame(struct nfcmrvl_private *priv,
                                    struct sk_buff *skb)
 {
+        /* Discard command timer */
+        if (timer_pending(&priv->ndev->cmd_timer))
+                del_timer_sync(&priv->ndev->cmd_timer);
+
         /* Allow next command */
         atomic_set(&priv->ndev->cmd_cnt, 1);
-        del_timer_sync(&priv->ndev->cmd_timer);
 
         /* Queue and trigger rx work */
         skb_queue_tail(&priv->fw_dnld.rx_q, skb);
diff --git a/drivers/nfc/nfcmrvl/main.c b/drivers/nfc/nfcmrvl/main.c
index 8079ae0de21e..51c8240a1672 100644
--- a/drivers/nfc/nfcmrvl/main.c
+++ b/drivers/nfc/nfcmrvl/main.c
@@ -194,6 +194,9 @@ void nfcmrvl_nci_unregister_dev(struct nfcmrvl_private *priv)
 
         nfcmrvl_fw_dnld_deinit(priv);
 
+        if (priv->config.reset_n_io)
+                devm_gpio_free(priv->dev, priv->config.reset_n_io);
+
         nci_unregister_device(ndev);
         nci_free_device(ndev);
         kfree(priv);
@@ -251,8 +254,6 @@ void nfcmrvl_chip_halt(struct nfcmrvl_private *priv)
                 gpio_set_value(priv->config.reset_n_io, 0);
 }
 
-#ifdef CONFIG_OF
-
 int nfcmrvl_parse_dt(struct device_node *node,
                      struct nfcmrvl_platform_data *pdata)
 {
@@ -275,16 +276,6 @@ int nfcmrvl_parse_dt(struct device_node *node,
 
         return 0;
 }
-
-#else
-
-int nfcmrvl_parse_dt(struct device_node *node,
-                     struct nfcmrvl_platform_data *pdata)
-{
-        return -ENODEV;
-}
-
-#endif
 EXPORT_SYMBOL_GPL(nfcmrvl_parse_dt);
 
 MODULE_AUTHOR("Marvell International Ltd.");
diff --git a/drivers/nfc/nfcmrvl/uart.c b/drivers/nfc/nfcmrvl/uart.c
index f3d041c4f249..83a99e38e7bd 100644
--- a/drivers/nfc/nfcmrvl/uart.c
+++ b/drivers/nfc/nfcmrvl/uart.c
@@ -67,8 +67,6 @@ static struct nfcmrvl_if_ops uart_ops = {
         .nci_update_config = nfcmrvl_uart_nci_update_config
 };
 
-#ifdef CONFIG_OF
-
 static int nfcmrvl_uart_parse_dt(struct device_node *node,
                                  struct nfcmrvl_platform_data *pdata)
 {
@@ -102,16 +100,6 @@ static int nfcmrvl_uart_parse_dt(struct device_node *node,
         return 0;
 }
 
-#else
-
-static int nfcmrvl_uart_parse_dt(struct device_node *node,
-                                 struct nfcmrvl_platform_data *pdata)
-{
-        return -ENODEV;
-}
-
-#endif
-
 /*
 ** NCI UART OPS
 */
@@ -152,10 +140,6 @@ 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 +158,9 @@ 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);
@@ -185,13 +172,18 @@ 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
         ** it.
         */
-        if (priv->config.break_control && nu->tty->ops->break_ctl)
+        if (priv->config.break_control && nu->tty->ops->break_ctl) {
                 nu->tty->ops->break_ctl(nu->tty, -1);
+                usleep_range(1000, 3000);
+        }
 }
 
 static struct nci_uart nfcmrvl_nci_uart = {