nfs: disintegrate UAPI for nfs

This is to complete part of the Userspace API (UAPI) disintegration for which
the preparatory patches were pulled recently.  After these patches, userspace
headers will be segregated into:

        include/uapi/linux/.../foo.h

for the userspace interface stuff, and:

        include/linux/.../foo.h

for the strictly kernel internal stuff.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 23 insertions, 22 deletions

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index d5c689d6217e..59819121fe9b 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -51,7 +51,7 @@
 
 #include <asm/io.h>
 #include <asm/irq.h>
-#include <mach/imx-uart.h>
+#include <linux/platform_data/serial-imx.h>
 
 /* Register definitions */
 #define URXD0 0x0  /* Receiver Register */
@@ -132,6 +132,7 @@
 #define  UCR4_OREN  	 (1<<1)  /* Receiver overrun interrupt enable */
 #define  UCR4_DREN  	 (1<<0)  /* Recv data ready interrupt enable */
 #define  UFCR_RXTL_SHF   0       /* Receiver trigger level shift */
+#define  UFCR_DCEDTE	 (1<<6)  /* DCE/DTE mode select */
 #define  UFCR_RFDIV      (7<<7)  /* Reference freq divider mask */
 #define  UFCR_RFDIV_REG(x)	(((x) < 7 ? 6 - (x) : 6) << 7)
 #define  UFCR_TXTL_SHF   10      /* Transmitter trigger level shift */
@@ -206,7 +207,7 @@ struct imx_port {
 	unsigned short		trcv_delay; /* transceiver delay */
 	struct clk		*clk_ipg;
 	struct clk		*clk_per;
-	struct imx_uart_data	*devdata;
+	const struct imx_uart_data *devdata;
 };
 
 struct imx_port_ucrs {
@@ -667,22 +668,11 @@ static void imx_break_ctl(struct uart_port *port, int break_state)
 static int imx_setup_ufcr(struct imx_port *sport, unsigned int mode)
 {
 	unsigned int val;
-	unsigned int ufcr_rfdiv;
-
-	/* set receiver / transmitter trigger level.
-	 * RFDIV is set such way to satisfy requested uartclk value
-	 */
-	val = TXTL << 10 | RXTL;
-	ufcr_rfdiv = (clk_get_rate(sport->clk_per) + sport->port.uartclk / 2)
-			/ sport->port.uartclk;
-
-	if(!ufcr_rfdiv)
-		ufcr_rfdiv = 1;
-
-	val |= UFCR_RFDIV_REG(ufcr_rfdiv);
 
+	/* set receiver / transmitter trigger level */
+	val = readl(sport->port.membase + UFCR) & (UFCR_RFDIV | UFCR_DCEDTE);
+	val |= TXTL << UFCR_TXTL_SHF | RXTL;
 	writel(val, sport->port.membase + UFCR);
-
 	return 0;
 }
 
@@ -754,6 +744,7 @@ static int imx_startup(struct uart_port *port)
 		}
 	}
 
+	spin_lock_irqsave(&sport->port.lock, flags);
 	/*
 	 * Finally, clear and enable interrupts
 	 */
@@ -807,7 +798,6 @@ static int imx_startup(struct uart_port *port)
 	/*
 	 * Enable modem status interrupts
 	 */
-	spin_lock_irqsave(&sport->port.lock,flags);
 	imx_enable_ms(&sport->port);
 	spin_unlock_irqrestore(&sport->port.lock,flags);
 
@@ -837,10 +827,13 @@ static void imx_shutdown(struct uart_port *port)
 {
 	struct imx_port *sport = (struct imx_port *)port;
 	unsigned long temp;
+	unsigned long flags;
 
+	spin_lock_irqsave(&sport->port.lock, flags);
 	temp = readl(sport->port.membase + UCR2);
 	temp &= ~(UCR2_TXEN);
 	writel(temp, sport->port.membase + UCR2);
+	spin_unlock_irqrestore(&sport->port.lock, flags);
 
 	if (USE_IRDA(sport)) {
 		struct imxuart_platform_data *pdata;
@@ -869,12 +862,14 @@ static void imx_shutdown(struct uart_port *port)
 	 * Disable all interrupts, port and break condition.
 	 */
 
+	spin_lock_irqsave(&sport->port.lock, flags);
 	temp = readl(sport->port.membase + UCR1);
 	temp &= ~(UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN);
 	if (USE_IRDA(sport))
 		temp &= ~(UCR1_IREN);
 
 	writel(temp, sport->port.membase + UCR1);
+	spin_unlock_irqrestore(&sport->port.lock, flags);
 }
 
 static void
@@ -1217,6 +1212,9 @@ imx_console_write(struct console *co, const char *s, unsigned int count)
 	struct imx_port *sport = imx_ports[co->index];
 	struct imx_port_ucrs old_ucr;
 	unsigned int ucr1;
+	unsigned long flags;
+
+	spin_lock_irqsave(&sport->port.lock, flags);
 
 	/*
 	 *	First, save UCR1/2/3 and then disable interrupts
@@ -1242,6 +1240,8 @@ imx_console_write(struct console *co, const char *s, unsigned int count)
 	while (!(readl(sport->port.membase + USR2) & USR2_TXDC));
 
 	imx_port_ucrs_restore(&sport->port, &old_ucr);
+
+	spin_unlock_irqrestore(&sport->port.lock, flags);
 }
 
 /*
@@ -1373,8 +1373,7 @@ static int serial_imx_suspend(struct platform_device *dev, pm_message_t state)
 	val |= UCR3_AWAKEN;
 	writel(val, sport->port.membase + UCR3);
 
-	if (sport)
-		uart_suspend_port(&imx_reg, &sport->port);
+	uart_suspend_port(&imx_reg, &sport->port);
 
 	return 0;
 }
@@ -1389,8 +1388,7 @@ static int serial_imx_resume(struct platform_device *dev)
 	val &= ~UCR3_AWAKEN;
 	writel(val, sport->port.membase + UCR3);
 
-	if (sport)
-		uart_resume_port(&imx_reg, &sport->port);
+	uart_resume_port(&imx_reg, &sport->port);
 
 	return 0;
 }
@@ -1505,18 +1503,21 @@ static int serial_imx_probe(struct platform_device *pdev)
 	pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
 	if (IS_ERR(pinctrl)) {
 		ret = PTR_ERR(pinctrl);
+		dev_err(&pdev->dev, "failed to get default pinctrl: %d\n", ret);
 		goto unmap;
 	}
 
 	sport->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
 	if (IS_ERR(sport->clk_ipg)) {
 		ret = PTR_ERR(sport->clk_ipg);
+		dev_err(&pdev->dev, "failed to get ipg clk: %d\n", ret);
 		goto unmap;
 	}
 
 	sport->clk_per = devm_clk_get(&pdev->dev, "per");
 	if (IS_ERR(sport->clk_per)) {
 		ret = PTR_ERR(sport->clk_per);
+		dev_err(&pdev->dev, "failed to get per clk: %d\n", ret);
 		goto unmap;
 	}
 
@@ -1537,7 +1538,7 @@ static int serial_imx_probe(struct platform_device *pdev)
 	ret = uart_add_one_port(&imx_reg, &sport->port);
 	if (ret)
 		goto deinit;
-	platform_set_drvdata(pdev, &sport->port);
+	platform_set_drvdata(pdev, sport);
 
 	return 0;
 deinit: