Merge remote-tracking branch 'wireless-next/master' into iwlwifi-next

11 files changed, 89 insertions, 43 deletions

diff --git a/drivers/tty/bfin_jtag_comm.c b/drivers/tty/bfin_jtag_comm.c
index 8096fcbe2dc1..d7b198c400c7 100644
--- a/drivers/tty/bfin_jtag_comm.c
+++ b/drivers/tty/bfin_jtag_comm.c
@@ -77,7 +77,6 @@ bfin_jc_emudat_manager(void *arg)
 			pr_debug("waiting for readers\n");
 			__set_current_state(TASK_UNINTERRUPTIBLE);
 			schedule();
-			__set_current_state(TASK_RUNNING);
 			continue;
 		}
 
diff --git a/drivers/tty/hvc/hvc_vio.c b/drivers/tty/hvc/hvc_vio.c
index 5618b5fc7500..f575a9b5ede7 100644
--- a/drivers/tty/hvc/hvc_vio.c
+++ b/drivers/tty/hvc/hvc_vio.c
@@ -452,7 +452,7 @@ void __init hvc_vio_init_early(void)
 		return;
 #endif
 	/* Check whether the user has requested a different console. */
-	if (!strstr(cmd_line, "console="))
+	if (!strstr(boot_command_line, "console="))
 		add_preferred_console("hvc", 0, NULL);
 	hvc_instantiate(0, 0, ops);
 }
diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c
index 2967f0388d2c..f1e57425e39f 100644
--- a/drivers/tty/hvc/hvc_xen.c
+++ b/drivers/tty/hvc/hvc_xen.c
@@ -347,8 +347,6 @@ static int xen_console_remove(struct xencons_info *info)
 }
 
 #ifdef CONFIG_HVC_XEN_FRONTEND
-static struct xenbus_driver xencons_driver;
-
 static int xencons_remove(struct xenbus_device *dev)
 {
 	return xen_console_remove(dev_get_drvdata(&dev->dev));
@@ -499,13 +497,14 @@ static const struct xenbus_device_id xencons_ids[] = {
 	{ "" }
 };
 
-
-static DEFINE_XENBUS_DRIVER(xencons, "xenconsole",
+static struct xenbus_driver xencons_driver = {
+	.name = "xenconsole",
+	.ids = xencons_ids,
 	.probe = xencons_probe,
 	.remove = xencons_remove,
 	.resume = xencons_resume,
 	.otherend_changed = xencons_backend_changed,
-);
+};
 #endif /* CONFIG_HVC_XEN_FRONTEND */
 
 static int __init xen_hvc_init(void)
diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h
index 1bcb4b2141a6..cb51be55989e 100644
--- a/drivers/tty/serial/8250/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -16,13 +16,13 @@
 #include <linux/dmaengine.h>
 
 struct uart_8250_dma {
+	/* Filter function */
 	dma_filter_fn		fn;
+
+	/* Parameter to the filter function */
 	void			*rx_param;
 	void			*tx_param;
 
-	int			rx_chan_id;
-	int			tx_chan_id;
-
 	struct dma_slave_config	rxconf;
 	struct dma_slave_config	txconf;
 
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 57d9df84ce5d..beea6ca73ee5 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -216,10 +216,7 @@ out:
 
 static bool dw8250_dma_filter(struct dma_chan *chan, void *param)
 {
-	struct dw8250_data *data = param;
-
-	return chan->chan_id == data->dma.tx_chan_id ||
-	       chan->chan_id == data->dma.rx_chan_id;
+	return false;
 }
 
 static void dw8250_setup_port(struct uart_8250_port *up)
@@ -399,8 +396,6 @@ static int dw8250_probe(struct platform_device *pdev)
 	if (!IS_ERR(data->rst))
 		reset_control_deassert(data->rst);
 
-	data->dma.rx_chan_id = -1;
-	data->dma.tx_chan_id = -1;
 	data->dma.rx_param = data;
 	data->dma.tx_param = data;
 	data->dma.fn = dw8250_dma_filter;
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 4f1cd296f1b1..beb9d71cd47a 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -25,6 +25,9 @@
 #include <asm/byteorder.h>
 #include <asm/io.h>
 
+#include <linux/dmaengine.h>
+#include <linux/platform_data/dma-dw.h>
+
 #include "8250.h"
 
 /*
@@ -1349,6 +1352,9 @@ ce4100_serial_setup(struct serial_private *priv,
 #define PCI_DEVICE_ID_INTEL_BYT_UART1	0x0f0a
 #define PCI_DEVICE_ID_INTEL_BYT_UART2	0x0f0c
 
+#define PCI_DEVICE_ID_INTEL_BSW_UART1	0x228a
+#define PCI_DEVICE_ID_INTEL_BSW_UART2	0x228c
+
 #define BYT_PRV_CLK			0x800
 #define BYT_PRV_CLK_EN			(1 << 0)
 #define BYT_PRV_CLK_M_VAL_SHIFT		1
@@ -1414,7 +1420,13 @@ byt_set_termios(struct uart_port *p, struct ktermios *termios,
 
 static bool byt_dma_filter(struct dma_chan *chan, void *param)
 {
-	return chan->chan_id == *(int *)param;
+	struct dw_dma_slave *dws = param;
+
+	if (dws->dma_dev != chan->device->dev)
+		return false;
+
+	chan->private = dws;
+	return true;
 }
 
 static int
@@ -1422,35 +1434,57 @@ byt_serial_setup(struct serial_private *priv,
 		 const struct pciserial_board *board,
 		 struct uart_8250_port *port, int idx)
 {
+	struct pci_dev *pdev = priv->dev;
+	struct device *dev = port->port.dev;
 	struct uart_8250_dma *dma;
+	struct dw_dma_slave *tx_param, *rx_param;
+	struct pci_dev *dma_dev;
 	int ret;
 
-	dma = devm_kzalloc(port->port.dev, sizeof(*dma), GFP_KERNEL);
+	dma = devm_kzalloc(dev, sizeof(*dma), GFP_KERNEL);
 	if (!dma)
 		return -ENOMEM;
 
-	switch (priv->dev->device) {
+	tx_param = devm_kzalloc(dev, sizeof(*tx_param), GFP_KERNEL);
+	if (!tx_param)
+		return -ENOMEM;
+
+	rx_param = devm_kzalloc(dev, sizeof(*rx_param), GFP_KERNEL);
+	if (!rx_param)
+		return -ENOMEM;
+
+	switch (pdev->device) {
 	case PCI_DEVICE_ID_INTEL_BYT_UART1:
-		dma->rx_chan_id = 3;
-		dma->tx_chan_id = 2;
+	case PCI_DEVICE_ID_INTEL_BSW_UART1:
+		rx_param->src_id = 3;
+		tx_param->dst_id = 2;
 		break;
 	case PCI_DEVICE_ID_INTEL_BYT_UART2:
-		dma->rx_chan_id = 5;
-		dma->tx_chan_id = 4;
+	case PCI_DEVICE_ID_INTEL_BSW_UART2:
+		rx_param->src_id = 5;
+		tx_param->dst_id = 4;
 		break;
 	default:
 		return -EINVAL;
 	}
 
-	dma->rxconf.slave_id = dma->rx_chan_id;
+	rx_param->src_master = 1;
+	rx_param->dst_master = 0;
+
 	dma->rxconf.src_maxburst = 16;
 
-	dma->txconf.slave_id = dma->tx_chan_id;
+	tx_param->src_master = 1;
+	tx_param->dst_master = 0;
+
 	dma->txconf.dst_maxburst = 16;
 
+	dma_dev = pci_get_slot(pdev->bus, PCI_DEVFN(PCI_SLOT(pdev->devfn), 0));
+	rx_param->dma_dev = &dma_dev->dev;
+	tx_param->dma_dev = &dma_dev->dev;
+
 	dma->fn = byt_dma_filter;
-	dma->rx_param = &dma->rx_chan_id;
-	dma->tx_param = &dma->tx_chan_id;
+	dma->rx_param = rx_param;
+	dma->tx_param = tx_param;
 
 	ret = pci_default_setup(priv, board, port, idx);
 	port->port.iotype = UPIO_MEM;
@@ -1893,6 +1927,20 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
 		.subdevice	= PCI_ANY_ID,
 		.setup		= pci_default_setup,
 	},
+	{
+		.vendor		= PCI_VENDOR_ID_INTEL,
+		.device		= PCI_DEVICE_ID_INTEL_BSW_UART1,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.setup		= byt_serial_setup,
+	},
+	{
+		.vendor		= PCI_VENDOR_ID_INTEL,
+		.device		= PCI_DEVICE_ID_INTEL_BSW_UART2,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.setup		= byt_serial_setup,
+	},
 	/*
 	 * ITE
 	 */
@@ -5192,6 +5240,14 @@ static struct pci_device_id serial_pci_tbl[] = {
 		PCI_ANY_ID,  PCI_ANY_ID,
 		PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
 		pbn_byt },
+	{	PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW_UART1,
+		PCI_ANY_ID,  PCI_ANY_ID,
+		PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
+		pbn_byt },
+	{	PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW_UART2,
+		PCI_ANY_ID,  PCI_ANY_ID,
+		PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
+		pbn_byt },
 
 	/*
 	 * Intel Quark x1000
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index d7d4584549a5..edde3eca055d 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -37,6 +37,7 @@
 #include <linux/of_device.h>
 #include <linux/of_gpio.h>
 #include <linux/dma-mapping.h>
+#include <linux/dmaengine.h>
 #include <linux/atmel_pdc.h>
 #include <linux/atmel_serial.h>
 #include <linux/uaccess.h>
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index 82573dc4d8cf..0041a64cc86e 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -1248,7 +1248,7 @@ static int max310x_probe(struct device *dev, struct max310x_devtype *devtype,
 	mutex_destroy(&s->mutex);
 
 #ifdef CONFIG_GPIOLIB
-	WARN_ON(gpiochip_remove(&s->gpio));
+	gpiochip_remove(&s->gpio);
 
 out_uart:
 #endif
@@ -1263,12 +1263,10 @@ out_clk:
 static int max310x_remove(struct device *dev)
 {
 	struct max310x_port *s = dev_get_drvdata(dev);
-	int i, ret = 0;
+	int i;
 
 #ifdef CONFIG_GPIOLIB
-	ret = gpiochip_remove(&s->gpio);
-	if (ret)
-		return ret;
+	gpiochip_remove(&s->gpio);
 #endif
 
 	for (i = 0; i < s->uart.nr; i++) {
@@ -1282,7 +1280,7 @@ static int max310x_remove(struct device *dev)
 	uart_unregister_driver(&s->uart);
 	clk_disable_unprepare(s->clk);
 
-	return ret;
+	return 0;
 }
 
 static const struct of_device_id __maybe_unused max310x_dt_ids[] = {
diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index 3284c31085a7..6246820d7f05 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -1157,7 +1157,7 @@ static int sc16is7xx_probe(struct device *dev,
 
 #ifdef CONFIG_GPIOLIB
 	if (devtype->nr_gpio)
-		WARN_ON(gpiochip_remove(&s->gpio));
+		gpiochip_remove(&s->gpio);
 
 out_uart:
 #endif
@@ -1173,14 +1173,11 @@ out_clk:
 static int sc16is7xx_remove(struct device *dev)
 {
 	struct sc16is7xx_port *s = dev_get_drvdata(dev);
-	int i, ret = 0;
+	int i;
 
 #ifdef CONFIG_GPIOLIB
-	if (s->devtype->nr_gpio) {
-		ret = gpiochip_remove(&s->gpio);
-		if (ret)
-			return ret;
-	}
+	if (s->devtype->nr_gpio)
+		gpiochip_remove(&s->gpio);
 #endif
 
 	for (i = 0; i < s->uart.nr; i++) {
@@ -1195,7 +1192,7 @@ static int sc16is7xx_remove(struct device *dev)
 	if (!IS_ERR(s->clk))
 		clk_disable_unprepare(s->clk);
 
-	return ret;
+	return 0;
 }
 
 static const struct of_device_id __maybe_unused sc16is7xx_dt_ids[] = {
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 3081e46085ce..eb17c7124e72 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1403,7 +1403,7 @@ static void work_fn_rx(struct work_struct *work)
 		unsigned long flags;
 		int count;
 
-		chan->device->device_control(chan, DMA_TERMINATE_ALL, 0);
+		dmaengine_terminate_all(chan);
 		dev_dbg(port->dev, "Read %zu bytes with cookie %d\n",
 			sh_desc->partial, sh_desc->cookie);
 
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 2f6f9b5e4891..16a2c0237dd6 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -2186,8 +2186,9 @@ static int __tty_fasync(int fd, struct file *filp, int on)
 		}
 		get_pid(pid);
 		spin_unlock_irqrestore(&tty->ctrl_lock, flags);
-		retval = __f_setown(filp, pid, type, 0);
+		__f_setown(filp, pid, type, 0);
 		put_pid(pid);
+		retval = 0;
 	}
 out:
 	return retval;