diff options
author | Scott Wood <scottwood@freescale.com> | 2014-04-08 20:27:17 (GMT) |
---|---|---|
committer | Scott Wood <scottwood@freescale.com> | 2014-04-08 20:27:25 (GMT) |
commit | 63f2cd32fb5f8541636f47cc4c7c53cf8284851f (patch) | |
tree | d8e66fde55f70332fd495907d529996e9568038b /drivers/tty | |
parent | 47d2261a3fa71cde24263559a4219a25e50d8c89 (diff) | |
parent | 2acf1c25b979aaae983bfd7c0c4dd04b31ccfc01 (diff) | |
download | linux-fsl-qoriq-63f2cd32fb5f8541636f47cc4c7c53cf8284851f.tar.xz |
Merge remote-tracking branch 'stable/linux-3.12.y' into sdk-v1.6.x
Signed-off-by: Scott Wood <scottwood@freescale.com>
Conflicts:
drivers/mmc/card/block.c
Diffstat (limited to 'drivers/tty')
-rw-r--r-- | drivers/tty/n_gsm.c | 11 | ||||
-rw-r--r-- | drivers/tty/n_tty.c | 25 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_core.c | 4 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_dw.c | 2 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_pci.c | 8 | ||||
-rw-r--r-- | drivers/tty/serial/amba-pl011.c | 6 | ||||
-rw-r--r-- | drivers/tty/serial/atmel_serial.c | 45 | ||||
-rw-r--r-- | drivers/tty/serial/pmac_zilog.c | 3 | ||||
-rw-r--r-- | drivers/tty/serial/sirfsoc_uart.c | 4 | ||||
-rw-r--r-- | drivers/tty/tty_io.c | 1 | ||||
-rw-r--r-- | drivers/tty/tty_ldsem.c | 16 | ||||
-rw-r--r-- | drivers/tty/vt/vt.c | 2 |
12 files changed, 97 insertions, 30 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index c0f76da..5056090 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -1089,6 +1089,7 @@ static void gsm_control_modem(struct gsm_mux *gsm, u8 *data, int clen) { unsigned int addr = 0; unsigned int modem = 0; + unsigned int brk = 0; struct gsm_dlci *dlci; int len = clen; u8 *dp = data; @@ -1115,6 +1116,16 @@ static void gsm_control_modem(struct gsm_mux *gsm, u8 *data, int clen) if (len == 0) return; } + len--; + if (len > 0) { + while (gsm_read_ea(&brk, *dp++) == 0) { + len--; + if (len == 0) + return; + } + modem <<= 7; + modem |= (brk & 0x7f); + } tty = tty_port_tty_get(&dlci->port); gsm_process_modem(tty, dlci, modem, clen); if (tty) { diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 7a744b6..d4a89db 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -93,6 +93,7 @@ struct n_tty_data { size_t canon_head; size_t echo_head; size_t echo_commit; + size_t echo_mark; DECLARE_BITMAP(char_map, 256); /* private to n_tty_receive_overrun (single-threaded) */ @@ -336,6 +337,7 @@ static void reset_buffer_flags(struct n_tty_data *ldata) { ldata->read_head = ldata->canon_head = ldata->read_tail = 0; ldata->echo_head = ldata->echo_tail = ldata->echo_commit = 0; + ldata->echo_mark = 0; ldata->line_start = 0; ldata->erasing = 0; @@ -767,8 +769,8 @@ static size_t __process_echoes(struct tty_struct *tty) * of echo overrun before the next commit), then discard enough * data at the tail to prevent a subsequent overrun */ while (ldata->echo_commit - tail >= ECHO_DISCARD_WATERMARK) { - if (echo_buf(ldata, tail == ECHO_OP_START)) { - if (echo_buf(ldata, tail) == ECHO_OP_ERASE_TAB) + if (echo_buf(ldata, tail) == ECHO_OP_START) { + if (echo_buf(ldata, tail + 1) == ECHO_OP_ERASE_TAB) tail += 3; else tail += 2; @@ -787,6 +789,7 @@ static void commit_echoes(struct tty_struct *tty) size_t head; head = ldata->echo_head; + ldata->echo_mark = head; old = ldata->echo_commit - ldata->echo_tail; /* Process committed echoes if the accumulated # of bytes @@ -810,10 +813,12 @@ static void process_echoes(struct tty_struct *tty) struct n_tty_data *ldata = tty->disc_data; size_t echoed; - if (!L_ECHO(tty) || ldata->echo_commit == ldata->echo_tail) + if ((!L_ECHO(tty) && !L_ECHONL(tty)) || + ldata->echo_mark == ldata->echo_tail) return; mutex_lock(&ldata->output_lock); + ldata->echo_commit = ldata->echo_mark; echoed = __process_echoes(tty); mutex_unlock(&ldata->output_lock); @@ -821,11 +826,13 @@ static void process_echoes(struct tty_struct *tty) tty->ops->flush_chars(tty); } +/* NB: echo_mark and echo_head should be equivalent here */ static void flush_echoes(struct tty_struct *tty) { struct n_tty_data *ldata = tty->disc_data; - if (!L_ECHO(tty) || ldata->echo_commit == ldata->echo_head) + if ((!L_ECHO(tty) && !L_ECHONL(tty)) || + ldata->echo_commit == ldata->echo_head) return; mutex_lock(&ldata->output_lock); @@ -2005,7 +2012,10 @@ static int canon_copy_from_read_buf(struct tty_struct *tty, found = 1; size = N_TTY_BUF_SIZE - tail; - n = (found + eol + size) & (N_TTY_BUF_SIZE - 1); + n = eol - tail; + if (n > 4096) + n += 4096; + n += found; c = n; if (found && read_buf(ldata, eol) == __DISABLED_CHAR) { @@ -2250,6 +2260,9 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file, if (time) timeout = time; } + n_tty_set_room(tty); + up_read(&tty->termios_rwsem); + mutex_unlock(&ldata->atomic_read_lock); remove_wait_queue(&tty->read_wait, &wait); @@ -2260,8 +2273,6 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file, if (b - buf) retval = b - buf; - n_tty_set_room(tty); - up_read(&tty->termios_rwsem); return retval; } diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index 192a715..f644226 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -2688,6 +2688,10 @@ static void serial8250_config_port(struct uart_port *port, int flags) if (port->type == PORT_16550A && port->iotype == UPIO_AU) up->bugs |= UART_BUG_NOMSR; + /* HW bugs may trigger IRQ while IIR == NO_INT */ + if (port->type == PORT_TEGRA) + up->bugs |= UART_BUG_NOMSR; + if (port->type != PORT_UNKNOWN && flags & UART_CONFIG_IRQ) autoconfig_irq(up); diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index daf710f..8b2accb 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -417,6 +417,8 @@ MODULE_DEVICE_TABLE(of, dw8250_of_match); static const struct acpi_device_id dw8250_acpi_match[] = { { "INT33C4", 0 }, { "INT33C5", 0 }, + { "INT3434", 0 }, + { "INT3435", 0 }, { "80860F0A", 0 }, { }, }; diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index c810da7..f5df8b7 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -1260,10 +1260,10 @@ static int pci_quatech_init(struct pci_dev *dev) unsigned long base = pci_resource_start(dev, 0); if (base) { u32 tmp; - outl(inl(base + 0x38), base + 0x38); + outl(inl(base + 0x38) | 0x00002000, base + 0x38); tmp = inl(base + 0x3c); outl(tmp | 0x01000000, base + 0x3c); - outl(tmp, base + 0x3c); + outl(tmp &= ~0x01000000, base + 0x3c); } } return 0; @@ -1545,6 +1545,7 @@ pci_wch_ch353_setup(struct serial_private *priv, #define PCI_DEVICE_ID_TITAN_800E 0xA014 #define PCI_DEVICE_ID_TITAN_200EI 0xA016 #define PCI_DEVICE_ID_TITAN_200EISI 0xA017 +#define PCI_DEVICE_ID_TITAN_200V3 0xA306 #define PCI_DEVICE_ID_TITAN_400V3 0xA310 #define PCI_DEVICE_ID_TITAN_410V3 0xA312 #define PCI_DEVICE_ID_TITAN_800V3 0xA314 @@ -4140,6 +4141,9 @@ static struct pci_device_id serial_pci_tbl[] = { { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_200EISI, PCI_ANY_ID, PCI_ANY_ID, 0, 0, pbn_oxsemi_2_4000000 }, + { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_200V3, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, + pbn_b0_bt_2_921600 }, { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_400V3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, pbn_b0_4_921600 }, diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index aaa2286..1440d0b 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -1537,6 +1537,8 @@ static int pl011_startup(struct uart_port *port) /* * Provoke TX FIFO interrupt into asserting. */ + spin_lock_irq(&uap->port.lock); + cr = UART01x_CR_UARTEN | UART011_CR_TXE | UART011_CR_LBE; writew(cr, uap->port.membase + UART011_CR); writew(0, uap->port.membase + UART011_FBRD); @@ -1561,6 +1563,8 @@ static int pl011_startup(struct uart_port *port) cr |= UART01x_CR_UARTEN | UART011_CR_RXE | UART011_CR_TXE; writew(cr, uap->port.membase + UART011_CR); + spin_unlock_irq(&uap->port.lock); + /* * initialise the old status of the modem signals */ @@ -1629,11 +1633,13 @@ static void pl011_shutdown(struct uart_port *port) * it during startup(). */ uap->autorts = false; + spin_lock_irq(&uap->port.lock); cr = readw(uap->port.membase + UART011_CR); uap->old_cr = cr; cr &= UART011_CR_RTS | UART011_CR_DTR; cr |= UART01x_CR_UARTEN | UART011_CR_TXE; writew(cr, uap->port.membase + UART011_CR); + spin_unlock_irq(&uap->port.lock); /* * disable break condition and fifos diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index 6b0f75e..41bb838 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -824,9 +824,6 @@ static void atmel_release_rx_dma(struct uart_port *port) atmel_port->desc_rx = NULL; atmel_port->chan_rx = NULL; atmel_port->cookie_rx = -EINVAL; - - if (!atmel_port->is_usart) - del_timer_sync(&atmel_port->uart_timer); } static void atmel_rx_from_dma(struct uart_port *port) @@ -1228,9 +1225,6 @@ static void atmel_release_rx_pdc(struct uart_port *port) DMA_FROM_DEVICE); kfree(pdc->buf); } - - if (!atmel_port->is_usart) - del_timer_sync(&atmel_port->uart_timer); } static void atmel_rx_from_pdc(struct uart_port *port) @@ -1587,12 +1581,13 @@ static int atmel_startup(struct uart_port *port) /* enable xmit & rcvr */ UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN); + setup_timer(&atmel_port->uart_timer, + atmel_uart_timer_callback, + (unsigned long)port); + if (atmel_use_pdc_rx(port)) { /* set UART timeout */ if (!atmel_port->is_usart) { - setup_timer(&atmel_port->uart_timer, - atmel_uart_timer_callback, - (unsigned long)port); mod_timer(&atmel_port->uart_timer, jiffies + uart_poll_timeout(port)); /* set USART timeout */ @@ -1607,9 +1602,6 @@ static int atmel_startup(struct uart_port *port) } else if (atmel_use_dma_rx(port)) { /* set UART timeout */ if (!atmel_port->is_usart) { - setup_timer(&atmel_port->uart_timer, - atmel_uart_timer_callback, - (unsigned long)port); mod_timer(&atmel_port->uart_timer, jiffies + uart_poll_timeout(port)); /* set USART timeout */ @@ -1633,12 +1625,30 @@ static int atmel_startup(struct uart_port *port) static void atmel_shutdown(struct uart_port *port) { struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); + /* - * Ensure everything is stopped. + * Prevent any tasklets being scheduled during + * cleanup + */ + del_timer_sync(&atmel_port->uart_timer); + + /* + * Clear out any scheduled tasklets before + * we destroy the buffers + */ + tasklet_kill(&atmel_port->tasklet); + + /* + * Ensure everything is stopped and + * disable all interrupts, port and break condition. */ atmel_stop_rx(port); atmel_stop_tx(port); + UART_PUT_CR(port, ATMEL_US_RSTSTA); + UART_PUT_IDR(port, -1); + + /* * Shut-down the DMA. */ @@ -1648,10 +1658,10 @@ static void atmel_shutdown(struct uart_port *port) atmel_port->release_tx(port); /* - * Disable all interrupts, port and break condition. + * Reset ring buffer pointers */ - UART_PUT_CR(port, ATMEL_US_RSTSTA); - UART_PUT_IDR(port, -1); + atmel_port->rx_ring.head = 0; + atmel_port->rx_ring.tail = 0; /* * Free the interrupt @@ -2424,11 +2434,12 @@ static int atmel_serial_remove(struct platform_device *pdev) struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); int ret = 0; + tasklet_kill(&atmel_port->tasklet); + device_init_wakeup(&pdev->dev, 0); ret = uart_remove_one_port(&atmel_uart, port); - tasklet_kill(&atmel_port->tasklet); kfree(atmel_port->rx_ring.buf); /* "port" is allocated statically, so we shouldn't free it */ diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c index f87f1a0..5ba30e0 100644 --- a/drivers/tty/serial/pmac_zilog.c +++ b/drivers/tty/serial/pmac_zilog.c @@ -2050,6 +2050,9 @@ static int __init pmz_console_init(void) /* Probe ports */ pmz_probe(); + if (pmz_ports_count == 0) + return -ENODEV; + /* TODO: Autoprobe console based on OF */ /* pmz_console.index = i; */ register_console(&pmz_console); diff --git a/drivers/tty/serial/sirfsoc_uart.c b/drivers/tty/serial/sirfsoc_uart.c index 61c1ad0..a72c33f 100644 --- a/drivers/tty/serial/sirfsoc_uart.c +++ b/drivers/tty/serial/sirfsoc_uart.c @@ -540,8 +540,10 @@ static void sirfsoc_rx_tmo_process_tl(unsigned long param) wr_regl(port, ureg->sirfsoc_rx_dma_io_ctrl, rd_regl(port, ureg->sirfsoc_rx_dma_io_ctrl) | SIRFUART_IO_MODE); - sirfsoc_uart_pio_rx_chars(port, 4 - sirfport->rx_io_count); spin_unlock_irqrestore(&sirfport->rx_lock, flags); + spin_lock(&port->lock); + sirfsoc_uart_pio_rx_chars(port, 4 - sirfport->rx_io_count); + spin_unlock(&port->lock); if (sirfport->rx_io_count == 4) { spin_lock_irqsave(&sirfport->rx_lock, flags); sirfport->rx_io_count = 0; diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 3a1a01a..c74a00a 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -2086,6 +2086,7 @@ retry_open: filp->f_op = &tty_fops; goto retry_open; } + clear_bit(TTY_HUPPED, &tty->flags); tty_unlock(tty); diff --git a/drivers/tty/tty_ldsem.c b/drivers/tty/tty_ldsem.c index 22fad8a..d8a55e8 100644 --- a/drivers/tty/tty_ldsem.c +++ b/drivers/tty/tty_ldsem.c @@ -86,11 +86,21 @@ static inline long ldsem_atomic_update(long delta, struct ld_semaphore *sem) return atomic_long_add_return(delta, (atomic_long_t *)&sem->count); } +/* + * ldsem_cmpxchg() updates @*old with the last-known sem->count value. + * Returns 1 if count was successfully changed; @*old will have @new value. + * Returns 0 if count was not changed; @*old will have most recent sem->count + */ static inline int ldsem_cmpxchg(long *old, long new, struct ld_semaphore *sem) { - long tmp = *old; - *old = atomic_long_cmpxchg(&sem->count, *old, new); - return *old == tmp; + long tmp = atomic_long_cmpxchg(&sem->count, *old, new); + if (tmp == *old) { + *old = new; + return 1; + } else { + *old = tmp; + return 0; + } } /* diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index 9a8e8c5..239eae5 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -1164,6 +1164,8 @@ static void csi_J(struct vc_data *vc, int vpar) scr_memsetw(vc->vc_screenbuf, vc->vc_video_erase_char, vc->vc_screenbuf_size >> 1); set_origin(vc); + if (CON_IS_VISIBLE(vc)) + update_screen(vc); /* fall through */ case 2: /* erase whole display */ count = vc->vc_cols * vc->vc_rows; |