Merge branch 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers into asm-generic

Patches from David Howells <dhowells@redhat.com>:

This is to complete part of the UAPI disintegration for which the
preparatory patches were pulled recently.

Note that there are some fixup patches which are at the base of the
branch aimed at you, plus all arches get the asm-generic branch merged in too.

* 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers:
  UAPI: (Scripted) Disintegrate include/asm-generic
  UAPI: Fix conditional header installation handling (notably kvm_para.h on m68k)
  c6x: remove c6x signal.h
  UAPI: Split compound conditionals containing __KERNEL__ in Arm64
  UAPI: Fix the guards on various asm/unistd.h files

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 73 insertions, 22 deletions

diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index 02d07bfcfa8..7f04717176a 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -82,7 +82,7 @@ static inline const char *s3c24xx_serial_portname(struct uart_port *port)
 
 static int s3c24xx_serial_txempty_nofifo(struct uart_port *port)
 {
-	return (rd_regl(port, S3C2410_UTRSTAT) & S3C2410_UTRSTAT_TXE);
+	return rd_regl(port, S3C2410_UTRSTAT) & S3C2410_UTRSTAT_TXE;
 }
 
 /*
@@ -268,7 +268,7 @@ s3c24xx_serial_rx_chars(int irq, void *dev_id)
 				dbg("break!\n");
 				port->icount.brk++;
 				if (uart_handle_break(port))
-				    goto ignore_char;
+					goto ignore_char;
 			}
 
 			if (uerstat & S3C2410_UERSTAT_FRAME)
@@ -459,7 +459,7 @@ static int s3c24xx_serial_startup(struct uart_port *port)
 			  s3c24xx_serial_portname(port), ourport);
 
 	if (ret != 0) {
-		printk(KERN_ERR "cannot get irq %d\n", ourport->rx_irq);
+		dev_err(port->dev, "cannot get irq %d\n", ourport->rx_irq);
 		return ret;
 	}
 
@@ -473,7 +473,7 @@ static int s3c24xx_serial_startup(struct uart_port *port)
 			  s3c24xx_serial_portname(port), ourport);
 
 	if (ret) {
-		printk(KERN_ERR "cannot get irq %d\n", ourport->tx_irq);
+		dev_err(port->dev, "cannot get irq %d\n", ourport->tx_irq);
 		goto err;
 	}
 
@@ -502,7 +502,7 @@ static int s3c64xx_serial_startup(struct uart_port *port)
 	ret = request_irq(port->irq, s3c64xx_serial_handle_irq, IRQF_SHARED,
 			  s3c24xx_serial_portname(port), ourport);
 	if (ret) {
-		printk(KERN_ERR "cannot get irq %d\n", port->irq);
+		dev_err(port->dev, "cannot get irq %d\n", port->irq);
 		return ret;
 	}
 
@@ -529,7 +529,7 @@ static void s3c24xx_serial_pm(struct uart_port *port, unsigned int level,
 
 	switch (level) {
 	case 3:
-		if (!IS_ERR(ourport->baudclk) && ourport->baudclk != NULL)
+		if (!IS_ERR(ourport->baudclk))
 			clk_disable(ourport->baudclk);
 
 		clk_disable(ourport->clk);
@@ -538,12 +538,12 @@ static void s3c24xx_serial_pm(struct uart_port *port, unsigned int level,
 	case 0:
 		clk_enable(ourport->clk);
 
-		if (!IS_ERR(ourport->baudclk) && ourport->baudclk != NULL)
+		if (!IS_ERR(ourport->baudclk))
 			clk_enable(ourport->baudclk);
 
 		break;
 	default:
-		printk(KERN_ERR "s3c24xx_serial: unknown pm %d\n", level);
+		dev_err(port->dev, "s3c24xx_serial: unknown pm %d\n", level);
 	}
 }
 
@@ -604,7 +604,6 @@ static unsigned int s3c24xx_serial_getclk(struct s3c24xx_uart_port *ourport,
 	char clkname[MAX_CLK_NAME_LENGTH];
 	int calc_deviation, deviation = (1 << 30) - 1;
 
-	*best_clk = NULL;
 	clk_sel = (ourport->cfg->clk_sel) ? ourport->cfg->clk_sel :
 			ourport->info->def_clk_sel;
 	for (cnt = 0; cnt < info->num_clks; cnt++) {
@@ -613,7 +612,7 @@ static unsigned int s3c24xx_serial_getclk(struct s3c24xx_uart_port *ourport,
 
 		sprintf(clkname, "clk_uart_baud%d", cnt);
 		clk = clk_get(ourport->port.dev, clkname);
-		if (IS_ERR_OR_NULL(clk))
+		if (IS_ERR(clk))
 			continue;
 
 		rate = clk_get_rate(clk);
@@ -684,7 +683,7 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
 {
 	struct s3c2410_uartcfg *cfg = s3c24xx_port_to_cfg(port);
 	struct s3c24xx_uart_port *ourport = to_ourport(port);
-	struct clk *clk = NULL;
+	struct clk *clk = ERR_PTR(-EINVAL);
 	unsigned long flags;
 	unsigned int baud, quot, clk_sel = 0;
 	unsigned int ulcon;
@@ -705,7 +704,7 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
 	quot = s3c24xx_serial_getclk(ourport, baud, &clk, &clk_sel);
 	if (baud == 38400 && (port->flags & UPF_SPD_MASK) == UPF_SPD_CUST)
 		quot = port->custom_divisor;
-	if (!clk)
+	if (IS_ERR(clk))
 		return;
 
 	/* check to see if we need  to change clock source */
@@ -713,9 +712,9 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
 	if (ourport->baudclk != clk) {
 		s3c24xx_serial_setsource(port, clk_sel);
 
-		if (ourport->baudclk != NULL && !IS_ERR(ourport->baudclk)) {
+		if (!IS_ERR(ourport->baudclk)) {
 			clk_disable(ourport->baudclk);
-			ourport->baudclk  = NULL;
+			ourport->baudclk = ERR_PTR(-EINVAL);
 		}
 
 		clk_enable(clk);
@@ -877,11 +876,24 @@ s3c24xx_serial_verify_port(struct uart_port *port, struct serial_struct *ser)
 
 static struct console s3c24xx_serial_console;
 
+static int __init s3c24xx_serial_console_init(void)
+{
+	register_console(&s3c24xx_serial_console);
+	return 0;
+}
+console_initcall(s3c24xx_serial_console_init);
+
 #define S3C24XX_SERIAL_CONSOLE &s3c24xx_serial_console
 #else
 #define S3C24XX_SERIAL_CONSOLE NULL
 #endif
 
+#ifdef CONFIG_CONSOLE_POLL
+static int s3c24xx_serial_get_poll_char(struct uart_port *port);
+static void s3c24xx_serial_put_poll_char(struct uart_port *port,
+			 unsigned char c);
+#endif
+
 static struct uart_ops s3c24xx_serial_ops = {
 	.pm		= s3c24xx_serial_pm,
 	.tx_empty	= s3c24xx_serial_tx_empty,
@@ -900,6 +912,10 @@ static struct uart_ops s3c24xx_serial_ops = {
 	.request_port	= s3c24xx_serial_request_port,
 	.config_port	= s3c24xx_serial_config_port,
 	.verify_port	= s3c24xx_serial_verify_port,
+#ifdef CONFIG_CONSOLE_POLL
+	.poll_get_char = s3c24xx_serial_get_poll_char,
+	.poll_put_char = s3c24xx_serial_put_poll_char,
+#endif
 };
 
 static struct uart_driver s3c24xx_uart_drv = {
@@ -1036,10 +1052,10 @@ static int s3c24xx_serial_cpufreq_transition(struct notifier_block *nb,
 		if (tty == NULL)
 			goto exit;
 
-		termios = tty->termios;
+		termios = &tty->termios;
 
 		if (termios == NULL) {
-			printk(KERN_WARNING "%s: no termios?\n", __func__);
+			dev_warn(uport->dev, "%s: no termios?\n", __func__);
 			goto exit;
 		}
 
@@ -1114,7 +1130,7 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
 
 	res = platform_get_resource(platdev, IORESOURCE_MEM, 0);
 	if (res == NULL) {
-		printk(KERN_ERR "failed to find memory resource for uart\n");
+		dev_err(port->dev, "failed to find memory resource for uart\n");
 		return -EINVAL;
 	}
 
@@ -1130,7 +1146,7 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
 		ourport->rx_irq = ret;
 		ourport->tx_irq = ret + 1;
 	}
-	
+
 	ret = platform_get_irq(platdev, 1);
 	if (ret > 0)
 		ourport->tx_irq = ret;
@@ -1160,7 +1176,11 @@ static ssize_t s3c24xx_serial_show_clksrc(struct device *dev,
 	struct uart_port *port = s3c24xx_dev_to_port(dev);
 	struct s3c24xx_uart_port *ourport = to_ourport(port);
 
-	return snprintf(buf, PAGE_SIZE, "* %s\n", ourport->baudclk->name);
+	if (IS_ERR(ourport->baudclk))
+		return -EINVAL;
+
+	return snprintf(buf, PAGE_SIZE, "* %s\n",
+			ourport->baudclk->name ?: "(null)");
 }
 
 static DEVICE_ATTR(clock_source, S_IRUGO, s3c24xx_serial_show_clksrc, NULL);
@@ -1200,6 +1220,7 @@ static int s3c24xx_serial_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
+	ourport->baudclk = ERR_PTR(-EINVAL);
 	ourport->info = ourport->drv_data->info;
 	ourport->cfg = (pdev->dev.platform_data) ?
 			(struct s3c2410_uartcfg *)pdev->dev.platform_data :
@@ -1312,6 +1333,36 @@ s3c24xx_serial_console_txrdy(struct uart_port *port, unsigned int ufcon)
 	return (utrstat & S3C2410_UTRSTAT_TXE) ? 1 : 0;
 }
 
+#ifdef CONFIG_CONSOLE_POLL
+/*
+ * Console polling routines for writing and reading from the uart while
+ * in an interrupt or debug context.
+ */
+
+static int s3c24xx_serial_get_poll_char(struct uart_port *port)
+{
+	struct s3c24xx_uart_port *ourport = to_ourport(port);
+	unsigned int ufstat;
+
+	ufstat = rd_regl(port, S3C2410_UFSTAT);
+	if (s3c24xx_serial_rx_fifocnt(ourport, ufstat) == 0)
+		return NO_POLL_CHAR;
+
+	return rd_regb(port, S3C2410_URXH);
+}
+
+static void s3c24xx_serial_put_poll_char(struct uart_port *port,
+		unsigned char c)
+{
+	unsigned int ufcon = rd_regl(cons_uart, S3C2410_UFCON);
+
+	while (!s3c24xx_serial_console_txrdy(port, ufcon))
+		cpu_relax();
+	wr_regb(cons_uart, S3C2410_UTXH, c);
+}
+
+#endif /* CONFIG_CONSOLE_POLL */
+
 static void
 s3c24xx_serial_console_putchar(struct uart_port *port, int ch)
 {
@@ -1387,7 +1438,7 @@ s3c24xx_serial_get_options(struct uart_port *port, int *baud,
 		sprintf(clk_name, "clk_uart_baud%d", clk_sel);
 
 		clk = clk_get(port->dev, clk_name);
-		if (!IS_ERR(clk) && clk != NULL)
+		if (!IS_ERR(clk))
 			rate = clk_get_rate(clk);
 		else
 			rate = 1;
@@ -1679,8 +1730,8 @@ static int __init s3c24xx_serial_modinit(void)
 
 	ret = uart_register_driver(&s3c24xx_uart_drv);
 	if (ret < 0) {
-		printk(KERN_ERR "failed to register UART driver\n");
-		return -1;
+		pr_err("Failed to register Samsung UART driver\n");
+		return ret;
 	}
 
 	return platform_driver_register(&samsung_serial_driver);