10 files changed, 166 insertions, 99 deletions

diff --git a/drivers/serial/68360serial.c b/drivers/serial/68360serial.c
index 68817a7d8c0d..2aa6bfe8fdb3 100644
--- a/drivers/serial/68360serial.c
+++ b/drivers/serial/68360serial.c
@@ -934,8 +934,6 @@ static void change_speed(ser_info_t *info)
         /*
          * Set up parity check flag
          */
-#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
-
         info->read_status_mask = (BD_SC_EMPTY | BD_SC_OV);
         if (I_INPCK(info->tty))
                 info->read_status_mask |= BD_SC_FR | BD_SC_PR;
@@ -1527,11 +1525,6 @@ static void rs_360_set_termios(struct tty_struct *tty, struct ktermios *old_term
 {
         ser_info_t *info = (ser_info_t *)tty->driver_data;
 
-        if (   (tty->termios->c_cflag == old_termios->c_cflag)
-            && (   RELEVANT_IFLAG(tty->termios->c_iflag) 
-                == RELEVANT_IFLAG(old_termios->c_iflag)))
-          return;
-
         change_speed(info);
 
 #ifdef modem_control
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index c84dab083a85..0b3ec38ae614 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2514,12 +2514,18 @@ static int __init serial8250_console_setup(struct console *co, char *options)
         return uart_set_options(port, co, baud, parity, bits, flow);
 }
 
+static int __init serial8250_console_early_setup(void)
+{
+        return serial8250_find_port_for_earlycon();
+}
+
 static struct uart_driver serial8250_reg;
 static struct console serial8250_console = {
         .name           = "ttyS",
         .write          = serial8250_console_write,
         .device         = uart_console_device,
         .setup          = serial8250_console_setup,
+        .early_setup    = serial8250_console_early_setup,
         .flags          = CON_PRINTBUFFER,
         .index          = -1,
         .data           = &serial8250_reg,
@@ -2533,7 +2539,7 @@ static int __init serial8250_console_init(void)
 }
 console_initcall(serial8250_console_init);
 
-static int __init find_port(struct uart_port *p)
+int serial8250_find_port(struct uart_port *p)
 {
         int line;
         struct uart_port *port;
@@ -2546,26 +2552,6 @@ static int __init find_port(struct uart_port *p)
         return -ENODEV;
 }
 
-int __init serial8250_start_console(struct uart_port *port, char *options)
-{
-        int line;
-
-        line = find_port(port);
-        if (line < 0)
-                return -ENODEV;
-
-        add_preferred_console("ttyS", line, options);
-        printk("Adding console on ttyS%d at %s 0x%lx (options '%s')\n",
-                line, port->iotype == UPIO_MEM ? "MMIO" : "I/O port",
-                port->iotype == UPIO_MEM ? (unsigned long) port->mapbase :
-                    (unsigned long) port->iobase, options);
-        if (!(serial8250_console.flags & CON_ENABLED)) {
-                serial8250_console.flags &= ~CON_PRINTBUFFER;
-                register_console(&serial8250_console);
-        }
-        return line;
-}
-
 #define SERIAL8250_CONSOLE      &serial8250_console
 #else
 #define SERIAL8250_CONSOLE      NULL
diff --git a/drivers/serial/8250_early.c b/drivers/serial/8250_early.c
index 7e511199b4c5..947c20507e1f 100644
--- a/drivers/serial/8250_early.c
+++ b/drivers/serial/8250_early.c
@@ -17,13 +17,11 @@
  * we locate the device directly by its MMIO or I/O port address.
  *
  * The user can specify the device directly, e.g.,
- *      console=uart,io,0x3f8,9600n8
- *      console=uart,mmio,0xff5e0000,115200n8
- * or platform code can call early_uart_console_init() to set
- * the early UART device.
- *
- * After the normal serial driver starts, we try to locate the
- * matching ttyS device and start a console there.
+ *      earlycon=uart8250,io,0x3f8,9600n8
+ *      earlycon=uart8250,mmio,0xff5e0000,115200n8
+ * or
+ *      console=uart8250,io,0x3f8,9600n8
+ *      console=uart8250,mmio,0xff5e0000,115200n8
  */
 
 #include <linux/tty.h>
@@ -32,17 +30,21 @@
 #include <linux/serial_core.h>
 #include <linux/serial_reg.h>
 #include <linux/serial.h>
+#include <linux/serial_8250.h>
 #include <asm/io.h>
 #include <asm/serial.h>
+#ifdef CONFIG_FIX_EARLYCON_MEM
+#include <asm/pgtable.h>
+#include <asm/fixmap.h>
+#endif
 
-struct early_uart_device {
+struct early_serial8250_device {
         struct uart_port port;
         char options[16];               /* e.g., 115200n8 */
         unsigned int baud;
 };
 
-static struct early_uart_device early_device __initdata;
-static int early_uart_registered __initdata;
+static struct early_serial8250_device early_device;
 
 static unsigned int __init serial_in(struct uart_port *port, int offset)
 {
@@ -80,7 +82,7 @@ static void __init putc(struct uart_port *port, int c)
         serial_out(port, UART_TX, c);
 }
 
-static void __init early_uart_write(struct console *console, const char *s, unsigned int count)
+static void __init early_serial8250_write(struct console *console, const char *s, unsigned int count)
 {
         struct uart_port *port = &early_device.port;
         unsigned int ier;
@@ -111,7 +113,7 @@ static unsigned int __init probe_baud(struct uart_port *port)
         return (port->uartclk / 16) / quot;
 }
 
-static void __init init_port(struct early_uart_device *device)
+static void __init init_port(struct early_serial8250_device *device)
 {
         struct uart_port *port = &device->port;
         unsigned int divisor;
@@ -130,10 +132,9 @@ static void __init init_port(struct early_uart_device *device)
         serial_out(port, UART_LCR, c & ~UART_LCR_DLAB);
 }
 
-static int __init parse_options(struct early_uart_device *device, char *options)
+static int __init parse_options(struct early_serial8250_device *device, char *options)
 {
         struct uart_port *port = &device->port;
-        int mapsize = 64;
         int mmio, length;
 
         if (!options)
@@ -143,12 +144,18 @@ static int __init parse_options(struct early_uart_device *device, char *options)
         if (!strncmp(options, "mmio,", 5)) {
                 port->iotype = UPIO_MEM;
                 port->mapbase = simple_strtoul(options + 5, &options, 0);
-                port->membase = ioremap(port->mapbase, mapsize);
+#ifdef CONFIG_FIX_EARLYCON_MEM
+                set_fixmap_nocache(FIX_EARLYCON_MEM_BASE, port->mapbase & PAGE_MASK);
+                port->membase = (void __iomem *)__fix_to_virt(FIX_EARLYCON_MEM_BASE);
+                port->membase += port->mapbase & ~PAGE_MASK;
+#else
+                port->membase = ioremap(port->mapbase, 64);
                 if (!port->membase) {
                         printk(KERN_ERR "%s: Couldn't ioremap 0x%lx\n",
                                 __FUNCTION__, port->mapbase);
                         return -ENOMEM;
                 }
+#endif
                 mmio = 1;
         } else if (!strncmp(options, "io,", 3)) {
                 port->iotype = UPIO_PORT;
@@ -175,9 +182,16 @@ static int __init parse_options(struct early_uart_device *device, char *options)
         return 0;
 }
 
-static int __init early_uart_setup(struct console *console, char *options)
+static struct console early_serial8250_console __initdata = {
+        .name   = "uart",
+        .write  = early_serial8250_write,
+        .flags  = CON_PRINTBUFFER | CON_BOOT,
+        .index  = -1,
+};
+
+static int __init early_serial8250_setup(char *options)
 {
-        struct early_uart_device *device = &early_device;
+        struct early_serial8250_device *device = &early_device;
         int err;
 
         if (device->port.membase || device->port.iobase)
@@ -190,61 +204,48 @@ static int __init early_uart_setup(struct console *console, char *options)
         return 0;
 }
 
-static struct console early_uart_console __initdata = {
-        .name   = "uart",
-        .write  = early_uart_write,
-        .setup  = early_uart_setup,
-        .flags  = CON_PRINTBUFFER,
-        .index  = -1,
-};
-
-static int __init early_uart_console_init(void)
-{
-        if (!early_uart_registered) {
-                register_console(&early_uart_console);
-                early_uart_registered = 1;
-        }
-        return 0;
-}
-console_initcall(early_uart_console_init);
-
-int __init early_serial_console_init(char *cmdline)
+int __init setup_early_serial8250_console(char *cmdline)
 {
         char *options;
         int err;
 
-        options = strstr(cmdline, "console=uart,");
-        if (!options)
-                return -ENODEV;
+        options = strstr(cmdline, "uart8250,");
+        if (!options) {
+                options = strstr(cmdline, "uart,");
+                if (!options)
+                        return 0;
+        }
 
         options = strchr(cmdline, ',') + 1;
-        if ((err = early_uart_setup(NULL, options)) < 0)
+        if ((err = early_serial8250_setup(options)) < 0)
                 return err;
-        return early_uart_console_init();
+
+        register_console(&early_serial8250_console);
+
+        return 0;
 }
 
-static int __init early_uart_console_switch(void)
+int __init serial8250_find_port_for_earlycon(void)
 {
-        struct early_uart_device *device = &early_device;
+        struct early_serial8250_device *device = &early_device;
         struct uart_port *port = &device->port;
-        int mmio, line;
+        int line;
+        int ret;
 
-        if (!(early_uart_console.flags & CON_ENABLED))
-                return 0;
+        if (!device->port.membase && !device->port.iobase)
+                return -ENODEV;
 
-        /* Try to start the normal driver on a matching line.  */
-        mmio = (port->iotype == UPIO_MEM);
-        line = serial8250_start_console(port, device->options);
+        line = serial8250_find_port(port);
         if (line < 0)
-                printk("No ttyS device at %s 0x%lx for console\n",
-                        mmio ? "MMIO" : "I/O port",
-                        mmio ? port->mapbase :
-                            (unsigned long) port->iobase);
+                return -ENODEV;
 
-        unregister_console(&early_uart_console);
-        if (mmio)
-                iounmap(port->membase);
+        ret = update_console_cmdline("uart", 8250,
+                             "ttyS", line, device->options);
+        if (ret < 0)
+                ret = update_console_cmdline("uart", 0,
+                                     "ttyS", line, device->options);
 
-        return 0;
+        return ret;
 }
-late_initcall(early_uart_console_switch);
+
+early_param("earlycon", setup_early_serial8250_console);
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 2adbed4e10f3..cab42cbd920d 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -62,8 +62,22 @@ config SERIAL_8250_CONSOLE
           kernel will automatically use the first serial line, /dev/ttyS0, as
           system console.
 
+          you can set that using a kernel command line option such as
+          "console=uart8250,io,0x3f8,9600n8"
+          "console=uart8250,mmio,0xff5e0000,115200n8".
+          and it will switch to normal serial console when correponding port is
+          ready.
+          "earlycon=uart8250,io,0x3f8,9600n8"
+          "earlycon=uart8250,mmio,0xff5e0000,115200n8".
+          it will not only setup early console.
+
           If unsure, say N.
 
+config FIX_EARLYCON_MEM
+        bool
+        depends on X86
+        default y
+
 config SERIAL_8250_GSC
         tristate
         depends on SERIAL_8250 && GSC
diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c
index 3320bcd92c0a..4d6b3c56d20e 100644
--- a/drivers/serial/atmel_serial.c
+++ b/drivers/serial/atmel_serial.c
@@ -114,6 +114,7 @@ struct atmel_uart_port {
         struct uart_port        uart;           /* uart */
         struct clk              *clk;           /* uart clock */
         unsigned short          suspended;      /* is port suspended? */
+        int                     break_active;   /* break being received */
 };
 
 static struct atmel_uart_port atmel_ports[ATMEL_MAX_UART];
@@ -252,6 +253,7 @@ static void atmel_break_ctl(struct uart_port *port, int break_state)
  */
 static void atmel_rx_chars(struct uart_port *port)
 {
+        struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port;
         struct tty_struct *tty = port->info->tty;
         unsigned int status, ch, flg;
 
@@ -267,13 +269,29 @@ static void atmel_rx_chars(struct uart_port *port)
                  * note that the error handling code is
                  * out of the main execution path
                  */
-                if (unlikely(status & (ATMEL_US_PARE | ATMEL_US_FRAME | ATMEL_US_OVRE | ATMEL_US_RXBRK))) {
+                if (unlikely(status & (ATMEL_US_PARE | ATMEL_US_FRAME
+                                       | ATMEL_US_OVRE | ATMEL_US_RXBRK)
+                             || atmel_port->break_active)) {
                         UART_PUT_CR(port, ATMEL_US_RSTSTA);     /* clear error */
-                        if (status & ATMEL_US_RXBRK) {
+                        if (status & ATMEL_US_RXBRK
+                            && !atmel_port->break_active) {
                                 status &= ~(ATMEL_US_PARE | ATMEL_US_FRAME);    /* ignore side-effect */
                                 port->icount.brk++;
+                                atmel_port->break_active = 1;
+                                UART_PUT_IER(port, ATMEL_US_RXBRK);
                                 if (uart_handle_break(port))
                                         goto ignore_char;
+                        } else {
+                                /*
+                                 * This is either the end-of-break
+                                 * condition or we've received at
+                                 * least one character without RXBRK
+                                 * being set. In both cases, the next
+                                 * RXBRK will indicate start-of-break.
+                                 */
+                                UART_PUT_IDR(port, ATMEL_US_RXBRK);
+                                status &= ~ATMEL_US_RXBRK;
+                                atmel_port->break_active = 0;
                         }
                         if (status & ATMEL_US_PARE)
                                 port->icount.parity++;
@@ -352,6 +370,16 @@ static irqreturn_t atmel_interrupt(int irq, void *dev_id)
                 /* Interrupt receive */
                 if (pending & ATMEL_US_RXRDY)
                         atmel_rx_chars(port);
+                else if (pending & ATMEL_US_RXBRK) {
+                        /*
+                         * End of break detected. If it came along
+                         * with a character, atmel_rx_chars will
+                         * handle it.
+                         */
+                        UART_PUT_CR(port, ATMEL_US_RSTSTA);
+                        UART_PUT_IDR(port, ATMEL_US_RXBRK);
+                        atmel_port->break_active = 0;
+                }
 
                 // TODO: All reads to CSR will clear these interrupts!
                 if (pending & ATMEL_US_RIIC) port->icount.rng++;
diff --git a/drivers/serial/ip22zilog.c b/drivers/serial/ip22zilog.c
index c3abfb39f316..f3257f708ef9 100644
--- a/drivers/serial/ip22zilog.c
+++ b/drivers/serial/ip22zilog.c
@@ -862,6 +862,7 @@ ip22zilog_set_termios(struct uart_port *port, struct ktermios *termios,
         up->cflag = termios->c_cflag;
 
         ip22zilog_maybe_update_regs(up, ZILOG_CHANNEL_FROM_PORT(port));
+        uart_update_timeout(port, termios->c_cflag, baud);
 
         spin_unlock_irqrestore(&up->port.lock, flags);
 }
@@ -1017,6 +1018,8 @@ ip22serial_console_termios(struct console *con, char *options)
         }
 
         con->cflag = cflag | CS8;                       /* 8N1 */
+
+        uart_update_timeout(&ip22zilog_port_table[con->index].port, cflag, baud);
 }
 
 static int __init ip22zilog_console_setup(struct console *con, char *options)
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 326020f86f75..9c57486c2e7f 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -1910,6 +1910,12 @@ uart_set_options(struct uart_port *port, struct console *co,
         if (flow == 'r')
                 termios.c_cflag |= CRTSCTS;
 
+        /*
+         * some uarts on other side don't support no flow control.
+         * So we set * DTR in host uart to make them happy
+         */
+        port->mctrl |= TIOCM_DTR;
+
         port->ops->set_termios(port, &termios, NULL);
         co->cflag = termios.c_cflag;
 
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c
index 1f89496d530e..672cd1042539 100644
--- a/drivers/serial/sh-sci.c
+++ b/drivers/serial/sh-sci.c
@@ -367,7 +367,9 @@ static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
         } else {
 #ifdef CONFIG_CPU_SUBTYPE_SH7343
                 /* Nothing */
-#elif defined(CONFIG_CPU_SUBTYPE_SH7780) || defined(CONFIG_CPU_SUBTYPE_SH7785)
+#elif defined(CONFIG_CPU_SUBTYPE_SH7780) || \
+      defined(CONFIG_CPU_SUBTYPE_SH7785) || \
+      defined(CONFIG_CPU_SUBTYPE_SHX3)
                 ctrl_outw(0x0080, SCSPTR0); /* Set RTS = 1 */
 #else
                 ctrl_outw(0x0080, SCSPTR2); /* Set RTS = 1 */
diff --git a/drivers/serial/sh-sci.h b/drivers/serial/sh-sci.h
index fb04fb5f9843..247fb66bf0f4 100644
--- a/drivers/serial/sh-sci.h
+++ b/drivers/serial/sh-sci.h
@@ -53,7 +53,12 @@
 # define SCIF_ORER 0x0001   /* overrun error bit */
 # define SCSCR_INIT(port) 0x3a /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
 # define SCIF_ONLY
-#elif defined(CONFIG_CPU_SUBTYPE_SH7750) || defined(CONFIG_CPU_SUBTYPE_SH7751)
+#elif defined(CONFIG_CPU_SUBTYPE_SH7750)  || \
+      defined(CONFIG_CPU_SUBTYPE_SH7750R) || \
+      defined(CONFIG_CPU_SUBTYPE_SH7750S) || \
+      defined(CONFIG_CPU_SUBTYPE_SH7091)  || \
+      defined(CONFIG_CPU_SUBTYPE_SH7751)  || \
+      defined(CONFIG_CPU_SUBTYPE_SH7751R)
 # define SCSPTR1 0xffe0001c /* 8  bit SCI */
 # define SCSPTR2 0xFFE80020 /* 16 bit SCIF */
 # define SCIF_ORER 0x0001   /* overrun error bit */
@@ -73,7 +78,7 @@
 # define SCPDR  0xA4050136        /* 16 bit SCIF */
 # define SCSCR_INIT(port)  0x0030 /* TIE=0,RIE=0,TE=1,RE=1 */
 # define SCIF_ONLY
-#elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712) 
+#elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
 # define SCSPTR0 0xA4400000       /* 16 bit SCIF */
 # define SCI_NPORTS 2
 # define SCIF_ORER 0x0001   /* overrun error bit */
@@ -168,6 +173,14 @@
 # define SCIF_ORER 0x0001  /* overrun error bit */
 # define SCSCR_INIT(port)       0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
 # define SCIF_ONLY
+#elif defined(CONFIG_CPU_SUBTYPE_SHX3)
+# define SCSPTR0 0xffc30020             /* 16 bit SCIF */
+# define SCSPTR1 0xffc40020             /* 16 bit SCIF */
+# define SCSPTR2 0xffc50020             /* 16 bit SCIF */
+# define SCSPTR3 0xffc60020             /* 16 bit SCIF */
+# define SCIF_ORER 0x0001               /* Overrun error bit */
+# define SCSCR_INIT(port)       0x38    /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
+# define SCIF_ONLY
 #else
 # error CPU subtype not defined
 #endif
@@ -177,10 +190,15 @@
 #define SCI_CTRL_FLAGS_RIE  0x40 /* all */
 #define SCI_CTRL_FLAGS_TE   0x20 /* all */
 #define SCI_CTRL_FLAGS_RE   0x10 /* all */
-#if defined(CONFIG_CPU_SUBTYPE_SH7750) || \
-    defined(CONFIG_CPU_SUBTYPE_SH7751) || \
-    defined(CONFIG_CPU_SUBTYPE_SH7780) || \
-    defined(CONFIG_CPU_SUBTYPE_SH7785)
+#if defined(CONFIG_CPU_SUBTYPE_SH7750)  || \
+    defined(CONFIG_CPU_SUBTYPE_SH7091)  || \
+    defined(CONFIG_CPU_SUBTYPE_SH7750R) || \
+    defined(CONFIG_CPU_SUBTYPE_SH7750S) || \
+    defined(CONFIG_CPU_SUBTYPE_SH7751)  || \
+    defined(CONFIG_CPU_SUBTYPE_SH7751R) || \
+    defined(CONFIG_CPU_SUBTYPE_SH7780)  || \
+    defined(CONFIG_CPU_SUBTYPE_SH7785)  || \
+    defined(CONFIG_CPU_SUBTYPE_SHX3)
 #define SCI_CTRL_FLAGS_REIE 0x08 /* 7750 SCIF */
 #else
 #define SCI_CTRL_FLAGS_REIE 0
@@ -514,8 +532,12 @@ static inline void set_sh771x_scif_pfc(struct uart_port *port)
         }
 }
 
-#elif defined(CONFIG_CPU_SUBTYPE_SH7750) || \
-      defined(CONFIG_CPU_SUBTYPE_SH7751) || \
+#elif defined(CONFIG_CPU_SUBTYPE_SH7750)  || \
+      defined(CONFIG_CPU_SUBTYPE_SH7751)  || \
+      defined(CONFIG_CPU_SUBTYPE_SH7751R) || \
+      defined(CONFIG_CPU_SUBTYPE_SH7750R) || \
+      defined(CONFIG_CPU_SUBTYPE_SH7750S) || \
+      defined(CONFIG_CPU_SUBTYPE_SH7091)  || \
       defined(CONFIG_CPU_SUBTYPE_SH4_202)
 static inline int sci_rxd_in(struct uart_port *port)
 {
@@ -653,6 +675,18 @@ static inline int sci_rxd_in(struct uart_port *port)
                 return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
         return 1;
 }
+#elif defined(CONFIG_CPU_SUBTYPE_SHX3)
+static inline int sci_rxd_in(struct uart_port *port)
+{
+        if (port->mapbase == 0xffc30000)
+                return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
+        if (port->mapbase == 0xffc40000)
+                return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
+        if (port->mapbase == 0xffc50000)
+                return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
+        if (port->mapbase == 0xffc60000)
+                return ctrl_inw(SCSPTR3) & 0x0001 ? 1 : 0; /* SCIF */
+}
 #endif
 
 /*
diff --git a/drivers/serial/sn_console.c b/drivers/serial/sn_console.c
index a27e9e92cb5e..41fc61264443 100644
--- a/drivers/serial/sn_console.c
+++ b/drivers/serial/sn_console.c
@@ -759,7 +759,7 @@ static void __init sn_sal_switch_to_interrupts(struct sn_cons_port *port)
  */
 
 static void sn_sal_console_write(struct console *, const char *, unsigned);
-static int __init sn_sal_console_setup(struct console *, char *);
+static int sn_sal_console_setup(struct console *, char *);
 static struct uart_driver sal_console_uart;
 extern struct tty_driver *uart_console_device(struct console *, int *);
 
@@ -1006,7 +1006,7 @@ sn_sal_console_write(struct console *co, const char *s, unsigned count)
  * here so providing it is easier.
  *
  */
-static int __init sn_sal_console_setup(struct console *co, char *options)
+static int sn_sal_console_setup(struct console *co, char *options)
 {
         return 0;
 }