7 files changed, 95 insertions, 29 deletions

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 4d8e14b7aa93..09a550860dcf 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2872,7 +2872,7 @@ static struct console serial8250_console = {
         .device         = uart_console_device,
         .setup          = serial8250_console_setup,
         .early_setup    = serial8250_console_early_setup,
-        .flags          = CON_PRINTBUFFER,
+        .flags          = CON_PRINTBUFFER | CON_ANYTIME,
         .index          = -1,
         .data           = &serial8250_reg,
 };
diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c
index 53be4d35a0aa..842e3b2a02b1 100644
--- a/drivers/serial/8250_pci.c
+++ b/drivers/serial/8250_pci.c
@@ -2285,6 +2285,8 @@ static struct pciserial_board pci_boards[] __devinitdata = {
 
 static const struct pci_device_id softmodem_blacklist[] = {
         { PCI_VDEVICE(AL, 0x5457), }, /* ALi Corporation M5457 AC'97 Modem */
+        { PCI_VDEVICE(MOTOROLA, 0x3052), }, /* Motorola Si3052-based modem */
+        { PCI_DEVICE(0x1543, 0x3052), }, /* Si3052-based modem, default IDs */
 };
 
 /*
@@ -2863,6 +2865,9 @@ static struct pci_device_id serial_pci_tbl[] = {
                 PCI_SUBVENDOR_ID_SIIG, PCI_SUBDEVICE_ID_SIIG_QUARTET_SERIAL,
                 0, 0,
                 pbn_b0_4_1152000 },
+        {       PCI_VENDOR_ID_OXSEMI, 0x9505,
+                PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+                pbn_b0_bt_2_921600 },
 
                 /*
                  * The below card is a little controversial since it is the
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index a9eff2b18eab..19cac9f610fd 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -23,6 +23,7 @@
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
 #include <linux/serial_core.h>
+#include <linux/dma-mapping.h>
 
 #if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
         defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
@@ -33,12 +34,10 @@
 #include <asm/gpio.h>
 #include <mach/bfin_serial_5xx.h>
 
-#ifdef CONFIG_SERIAL_BFIN_DMA
-#include <linux/dma-mapping.h>
+#include <asm/dma.h>
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/cacheflush.h>
-#endif
 
 #ifdef CONFIG_SERIAL_BFIN_MODULE
 # undef CONFIG_EARLY_PRINTK
@@ -360,7 +359,6 @@ static void bfin_serial_tx_chars(struct bfin_serial_port *uart)
                 UART_PUT_CHAR(uart, xmit->buf[xmit->tail]);
                 xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
                 uart->port.icount.tx++;
-                SSYNC();
         }
 
         if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
@@ -688,6 +686,13 @@ static int bfin_serial_startup(struct uart_port *port)
 
 # ifdef CONFIG_BF54x
         {
+                /*
+                 * UART2 and UART3 on BF548 share interrupt PINs and DMA
+                 * controllers with SPORT2 and SPORT3. UART rx and tx
+                 * interrupts are generated in PIO mode only when configure
+                 * their peripheral mapping registers properly, which means
+                 * request corresponding DMA channels in PIO mode as well.
+                 */
                 unsigned uart_dma_ch_rx, uart_dma_ch_tx;
 
                 switch (uart->port.irq) {
@@ -734,8 +739,7 @@ static int bfin_serial_startup(struct uart_port *port)
                         IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
                         IRQF_DISABLED, "BFIN_UART_CTS", uart)) {
                         uart->cts_pin = -1;
-                        pr_info("Unable to attach BlackFin UART CTS interrupt.\
-                                 So, disable it.\n");
+                        pr_info("Unable to attach BlackFin UART CTS interrupt. So, disable it.\n");
                 }
         }
         if (uart->rts_pin >= 0) {
@@ -747,8 +751,7 @@ static int bfin_serial_startup(struct uart_port *port)
         if (request_irq(uart->status_irq,
                 bfin_serial_mctrl_cts_int,
                 IRQF_DISABLED, "BFIN_UART_MODEM_STATUS", uart)) {
-                pr_info("Unable to attach BlackFin UART Modem \
-                        Status interrupt.\n");
+                pr_info("Unable to attach BlackFin UART Modem Status interrupt.\n");
         }
 
         /* CTS RTS PINs are negative assertive. */
@@ -846,6 +849,8 @@ bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,
         if (termios->c_cflag & CMSPAR)
                 lcr |= STP;
 
+        spin_lock_irqsave(&uart->port.lock, flags);
+
         port->read_status_mask = OE;
         if (termios->c_iflag & INPCK)
                 port->read_status_mask |= (FE | PE);
@@ -875,8 +880,6 @@ bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,
         if (termios->c_line != N_IRDA)
                 quot -= ANOMALY_05000230;
 
-        spin_lock_irqsave(&uart->port.lock, flags);
-
         UART_SET_ANOMALY_THRESHOLD(uart, USEC_PER_SEC / baud * 15);
 
         /* Disable UART */
@@ -1321,6 +1324,14 @@ struct console __init *bfin_earlyserial_init(unsigned int port,
         struct bfin_serial_port *uart;
         struct ktermios t;
 
+#ifdef CONFIG_SERIAL_BFIN_CONSOLE
+        /*
+         * If we are using early serial, don't let the normal console rewind
+         * log buffer, since that causes things to be printed multiple times
+         */
+        bfin_serial_console.flags &= ~CON_PRINTBUFFER;
+#endif
+
         if (port == -1 || port >= nr_active_ports)
                 port = 0;
         bfin_serial_init_ports();
diff --git a/drivers/serial/crisv10.c b/drivers/serial/crisv10.c
index fa62578fcd20..bcc31f2140ac 100644
--- a/drivers/serial/crisv10.c
+++ b/drivers/serial/crisv10.c
@@ -18,7 +18,6 @@ static char *serial_version = "$Revision: 1.25 $";
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
 #include <linux/major.h>
-#include <linux/smp_lock.h>
 #include <linux/string.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
diff --git a/drivers/serial/kgdboc.c b/drivers/serial/kgdboc.c
index d4b711c9a416..25a8bc565f40 100644
--- a/drivers/serial/kgdboc.c
+++ b/drivers/serial/kgdboc.c
@@ -18,6 +18,7 @@
 #include <linux/tty.h>
 #include <linux/console.h>
 #include <linux/vt_kern.h>
+#include <linux/input.h>
 
 #define MAX_CONFIG_LEN          40
 
@@ -37,6 +38,62 @@ static struct tty_driver	*kgdb_tty_driver;
 static int                      kgdb_tty_line;
 
 #ifdef CONFIG_KDB_KEYBOARD
+static int kgdboc_reset_connect(struct input_handler *handler,
+                                struct input_dev *dev,
+                                const struct input_device_id *id)
+{
+        input_reset_device(dev);
+
+        /* Retrun an error - we do not want to bind, just to reset */
+        return -ENODEV;
+}
+
+static void kgdboc_reset_disconnect(struct input_handle *handle)
+{
+        /* We do not expect anyone to actually bind to us */
+        BUG();
+}
+
+static const struct input_device_id kgdboc_reset_ids[] = {
+        {
+                .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
+                .evbit = { BIT_MASK(EV_KEY) },
+        },
+        { }
+};
+
+static struct input_handler kgdboc_reset_handler = {
+        .connect        = kgdboc_reset_connect,
+        .disconnect     = kgdboc_reset_disconnect,
+        .name           = "kgdboc_reset",
+        .id_table       = kgdboc_reset_ids,
+};
+
+static DEFINE_MUTEX(kgdboc_reset_mutex);
+
+static void kgdboc_restore_input_helper(struct work_struct *dummy)
+{
+        /*
+         * We need to take a mutex to prevent several instances of
+         * this work running on different CPUs so they don't try
+         * to register again already registered handler.
+         */
+        mutex_lock(&kgdboc_reset_mutex);
+
+        if (input_register_handler(&kgdboc_reset_handler) == 0)
+                input_unregister_handler(&kgdboc_reset_handler);
+
+        mutex_unlock(&kgdboc_reset_mutex);
+}
+
+static DECLARE_WORK(kgdboc_restore_input_work, kgdboc_restore_input_helper);
+
+static void kgdboc_restore_input(void)
+{
+        if (likely(system_state == SYSTEM_RUNNING))
+                schedule_work(&kgdboc_restore_input_work);
+}
+
 static int kgdboc_register_kbd(char **cptr)
 {
         if (strncmp(*cptr, "kbd", 3) == 0) {
@@ -64,10 +121,12 @@ static void kgdboc_unregister_kbd(void)
                         i--;
                 }
         }
+        flush_work_sync(&kgdboc_restore_input_work);
 }
 #else /* ! CONFIG_KDB_KEYBOARD */
 #define kgdboc_register_kbd(x) 0
 #define kgdboc_unregister_kbd()
+#define kgdboc_restore_input()
 #endif /* ! CONFIG_KDB_KEYBOARD */
 
 static int kgdboc_option_setup(char *opt)
@@ -231,6 +290,7 @@ static void kgdboc_post_exp_handler(void)
                 dbg_restore_graphics = 0;
                 con_debug_leave();
         }
+        kgdboc_restore_input();
 }
 
 static struct kgdb_io kgdboc_io_ops = {
diff --git a/drivers/serial/mfd.c b/drivers/serial/mfd.c
index 5fc699e929dc..d40010a22ecd 100644
--- a/drivers/serial/mfd.c
+++ b/drivers/serial/mfd.c
@@ -900,8 +900,7 @@ serial_hsu_set_termios(struct uart_port *port, struct ktermios *termios,
         unsigned char cval, fcr = 0;
         unsigned long flags;
         unsigned int baud, quot;
-        u32 mul = 0x3600;
-        u32 ps = 0x10;
+        u32 ps, mul;
 
         switch (termios->c_cflag & CSIZE) {
         case CS5:
@@ -943,31 +942,24 @@ serial_hsu_set_termios(struct uart_port *port, struct ktermios *termios,
         baud = uart_get_baud_rate(port, termios, old, 0, 4000000);
 
         quot = 1;
+        ps = 0x10;
+        mul = 0x3600;
         switch (baud) {
         case 3500000:
                 mul = 0x3345;
                 ps = 0xC;
                 break;
-        case 3000000:
-                mul = 0x2EE0;
-                break;
-        case 2500000:
-                mul = 0x2710;
-                break;
-        case 2000000:
-                mul = 0x1F40;
-                break;
         case 1843200:
                 mul = 0x2400;
                 break;
+        case 3000000:
+        case 2500000:
+        case 2000000:
         case 1500000:
-                mul = 0x1770;
-                break;
         case 1000000:
-                mul = 0xFA0;
-                break;
         case 500000:
-                mul = 0x7D0;
+                /* mul/ps/quot = 0x9C4/0x10/0x1 will make a 500000 bps */
+                mul = baud / 500000 * 0x9C4;
                 break;
         default:
                 /* Use uart_get_divisor to get quot for other baud rates */
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index c4ea14670d44..9ffa5bee44ab 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -29,7 +29,6 @@
 #include <linux/console.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
-#include <linux/smp_lock.h>
 #include <linux/device.h>
 #include <linux/serial.h> /* for serial_state and serial_icounter_struct */
 #include <linux/serial_core.h>