diff options
author | Paul Mundt <lethal@linux-sh.org> | 2009-12-15 04:10:10 +0100 |
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committer | Paul Mundt <lethal@linux-sh.org> | 2009-12-15 04:10:10 +0100 |
commit | e0aa51f54faa0659b529143de6c608e76675326f (patch) | |
tree | 22fc566b74bfe6bd612a858ba354818900cdc394 /drivers/serial | |
parent | sh: ms7724se: Add ak4642 support (diff) | |
parent | Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jac... (diff) | |
download | linux-e0aa51f54faa0659b529143de6c608e76675326f.tar.xz linux-e0aa51f54faa0659b529143de6c608e76675326f.zip |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'drivers/serial')
-rw-r--r-- | drivers/serial/8250.c | 24 | ||||
-rw-r--r-- | drivers/serial/jsm/jsm.h | 8 | ||||
-rw-r--r-- | drivers/serial/jsm/jsm_driver.c | 48 | ||||
-rw-r--r-- | drivers/serial/jsm/jsm_neo.c | 8 | ||||
-rw-r--r-- | drivers/serial/jsm/jsm_tty.c | 6 | ||||
-rw-r--r-- | drivers/serial/pxa.c | 13 | ||||
-rw-r--r-- | drivers/serial/serial_core.c | 33 | ||||
-rw-r--r-- | drivers/serial/ucc_uart.c | 8 |
8 files changed, 94 insertions, 54 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index 737b4c960971..c3e37c8e7e26 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -1339,14 +1339,12 @@ static void serial8250_start_tx(struct uart_port *port) serial_out(up, UART_IER, up->ier); if (up->bugs & UART_BUG_TXEN) { - unsigned char lsr, iir; + unsigned char lsr; lsr = serial_in(up, UART_LSR); up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS; - iir = serial_in(up, UART_IIR) & 0x0f; if ((up->port.type == PORT_RM9000) ? - (lsr & UART_LSR_THRE && - (iir == UART_IIR_NO_INT || iir == UART_IIR_THRI)) : - (lsr & UART_LSR_TEMT && iir & UART_IIR_NO_INT)) + (lsr & UART_LSR_THRE) : + (lsr & UART_LSR_TEMT)) transmit_chars(up); } } @@ -2646,7 +2644,7 @@ static void __init serial8250_isa_init_ports(void) { struct uart_8250_port *up; static int first = 1; - int i; + int i, irqflag = 0; if (!first) return; @@ -2670,6 +2668,9 @@ static void __init serial8250_isa_init_ports(void) up->port.ops = &serial8250_pops; } + if (share_irqs) + irqflag = IRQF_SHARED; + for (i = 0, up = serial8250_ports; i < ARRAY_SIZE(old_serial_port) && i < nr_uarts; i++, up++) { @@ -2683,8 +2684,7 @@ static void __init serial8250_isa_init_ports(void) up->port.iotype = old_serial_port[i].io_type; up->port.regshift = old_serial_port[i].iomem_reg_shift; set_io_from_upio(&up->port); - if (share_irqs) - up->port.irqflags |= IRQF_SHARED; + up->port.irqflags |= irqflag; } } @@ -2940,10 +2940,13 @@ static int __devinit serial8250_probe(struct platform_device *dev) { struct plat_serial8250_port *p = dev->dev.platform_data; struct uart_port port; - int ret, i; + int ret, i, irqflag = 0; memset(&port, 0, sizeof(struct uart_port)); + if (share_irqs) + irqflag = IRQF_SHARED; + for (i = 0; p && p->flags != 0; p++, i++) { port.iobase = p->iobase; port.membase = p->membase; @@ -2960,8 +2963,7 @@ static int __devinit serial8250_probe(struct platform_device *dev) port.serial_in = p->serial_in; port.serial_out = p->serial_out; port.dev = &dev->dev; - if (share_irqs) - port.irqflags |= IRQF_SHARED; + port.irqflags |= irqflag; ret = serial8250_register_port(&port); if (ret < 0) { dev_err(&dev->dev, "unable to register port at index %d " diff --git a/drivers/serial/jsm/jsm.h b/drivers/serial/jsm/jsm.h index 4e5f3bde0461..38a509c684cd 100644 --- a/drivers/serial/jsm/jsm.h +++ b/drivers/serial/jsm/jsm.h @@ -138,7 +138,6 @@ struct jsm_board u32 nasync; /* Number of ports on card */ u32 irq; /* Interrupt request number */ - u64 intr_count; /* Count of interrupts */ u64 membase; /* Start of base memory of the card */ u64 membase_end; /* End of base memory of the card */ @@ -206,8 +205,6 @@ struct jsm_channel { u64 ch_close_delay; /* How long we should drop RTS/DTR for */ - u64 ch_cpstime; /* Time for CPS calculations */ - tcflag_t ch_c_iflag; /* channel iflags */ tcflag_t ch_c_cflag; /* channel cflags */ tcflag_t ch_c_oflag; /* channel oflags */ @@ -215,11 +212,6 @@ struct jsm_channel { u8 ch_stopc; /* Stop character */ u8 ch_startc; /* Start character */ - u32 ch_old_baud; /* Cache of the current baud */ - u32 ch_custom_speed;/* Custom baud, if set */ - - u32 ch_wopen; /* Waiting for open process cnt */ - u8 ch_mostat; /* FEP output modem status */ u8 ch_mistat; /* FEP input modem status */ diff --git a/drivers/serial/jsm/jsm_driver.c b/drivers/serial/jsm/jsm_driver.c index b3604aa322a4..108c3e0471fd 100644 --- a/drivers/serial/jsm/jsm_driver.c +++ b/drivers/serial/jsm/jsm_driver.c @@ -48,6 +48,17 @@ struct uart_driver jsm_uart_driver = { .nr = NR_PORTS, }; +static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev, + pci_channel_state_t state); +static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev); +static void jsm_io_resume(struct pci_dev *pdev); + +static struct pci_error_handlers jsm_err_handler = { + .error_detected = jsm_io_error_detected, + .slot_reset = jsm_io_slot_reset, + .resume = jsm_io_resume, +}; + int jsm_debug; module_param(jsm_debug, int, 0); MODULE_PARM_DESC(jsm_debug, "Driver debugging level"); @@ -123,7 +134,7 @@ static int __devinit jsm_probe_one(struct pci_dev *pdev, const struct pci_device } rc = request_irq(brd->irq, brd->bd_ops->intr, - IRQF_DISABLED|IRQF_SHARED, "JSM", brd); + IRQF_SHARED, "JSM", brd); if (rc) { printk(KERN_WARNING "Failed to hook IRQ %d\n",brd->irq); goto out_iounmap; @@ -164,6 +175,7 @@ static int __devinit jsm_probe_one(struct pci_dev *pdev, const struct pci_device } pci_set_drvdata(pdev, brd); + pci_save_state(pdev); return 0; out_free_irq: @@ -222,8 +234,42 @@ static struct pci_driver jsm_driver = { .id_table = jsm_pci_tbl, .probe = jsm_probe_one, .remove = __devexit_p(jsm_remove_one), + .err_handler = &jsm_err_handler, }; +static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev, + pci_channel_state_t state) +{ + struct jsm_board *brd = pci_get_drvdata(pdev); + + jsm_remove_uart_port(brd); + + return PCI_ERS_RESULT_NEED_RESET; +} + +static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev) +{ + int rc; + + rc = pci_enable_device(pdev); + + if (rc) + return PCI_ERS_RESULT_DISCONNECT; + + pci_set_master(pdev); + + return PCI_ERS_RESULT_RECOVERED; +} + +static void jsm_io_resume(struct pci_dev *pdev) +{ + struct jsm_board *brd = pci_get_drvdata(pdev); + + pci_restore_state(pdev); + + jsm_uart_port_init(brd); +} + static int __init jsm_init_module(void) { int rc; diff --git a/drivers/serial/jsm/jsm_neo.c b/drivers/serial/jsm/jsm_neo.c index b4b124e4828f..7960d9633c15 100644 --- a/drivers/serial/jsm/jsm_neo.c +++ b/drivers/serial/jsm/jsm_neo.c @@ -954,13 +954,8 @@ static void neo_param(struct jsm_channel *ch) ch->ch_flags |= (CH_BAUD0); ch->ch_mostat &= ~(UART_MCR_RTS | UART_MCR_DTR); neo_assert_modem_signals(ch); - ch->ch_old_baud = 0; return; - } else if (ch->ch_custom_speed) { - baud = ch->ch_custom_speed; - if (ch->ch_flags & CH_BAUD0) - ch->ch_flags &= ~(CH_BAUD0); } else { int i; unsigned int cflag; @@ -1045,7 +1040,6 @@ static void neo_param(struct jsm_channel *ch) quot = ch->ch_bd->bd_dividend / baud; if (quot != 0) { - ch->ch_old_baud = baud; writeb(UART_LCR_DLAB, &ch->ch_neo_uart->lcr); writeb((quot & 0xff), &ch->ch_neo_uart->txrx); writeb((quot >> 8), &ch->ch_neo_uart->ier); @@ -1123,8 +1117,6 @@ static irqreturn_t neo_intr(int irq, void *voidbrd) unsigned long lock_flags2; int outofloop_count = 0; - brd->intr_count++; - /* Lock out the slow poller from running on this board. */ spin_lock_irqsave(&brd->bd_intr_lock, lock_flags); diff --git a/drivers/serial/jsm/jsm_tty.c b/drivers/serial/jsm/jsm_tty.c index 7439c0373620..cd95e215550d 100644 --- a/drivers/serial/jsm/jsm_tty.c +++ b/drivers/serial/jsm/jsm_tty.c @@ -296,8 +296,6 @@ static void jsm_tty_close(struct uart_port *port) bd->bd_ops->assert_modem_signals(channel); } - channel->ch_old_baud = 0; - /* Turn off UART interrupts for this port */ channel->ch_bd->bd_ops->uart_off(channel); @@ -432,7 +430,7 @@ int __devinit jsm_tty_init(struct jsm_board *brd) return 0; } -int __devinit jsm_uart_port_init(struct jsm_board *brd) +int jsm_uart_port_init(struct jsm_board *brd) { int i; unsigned int line; @@ -472,7 +470,7 @@ int __devinit jsm_uart_port_init(struct jsm_board *brd) if (uart_add_one_port (&jsm_uart_driver, &brd->channels[i]->uart_port)) printk(KERN_INFO "jsm: add device failed\n"); else - printk(KERN_INFO "Added device \n"); + printk(KERN_INFO "jsm: Port %d added\n", i); } jsm_printk(INIT, INFO, &brd->pci_dev, "finish\n"); diff --git a/drivers/serial/pxa.c b/drivers/serial/pxa.c index b8629d74f6a2..4a821046baae 100644 --- a/drivers/serial/pxa.c +++ b/drivers/serial/pxa.c @@ -438,6 +438,7 @@ serial_pxa_set_termios(struct uart_port *port, struct ktermios *termios, unsigned char cval, fcr = 0; unsigned long flags; unsigned int baud, quot; + unsigned int dll; switch (termios->c_cflag & CSIZE) { case CS5: @@ -534,10 +535,18 @@ serial_pxa_set_termios(struct uart_port *port, struct ktermios *termios, else up->mcr &= ~UART_MCR_AFE; - serial_out(up, UART_LCR, cval | UART_LCR_DLAB);/* set DLAB */ + serial_out(up, UART_LCR, cval | UART_LCR_DLAB); /* set DLAB */ serial_out(up, UART_DLL, quot & 0xff); /* LS of divisor */ + + /* + * work around Errata #75 according to Intel(R) PXA27x Processor Family + * Specification Update (Nov 2005) + */ + dll = serial_in(up, UART_DLL); + WARN_ON(dll != (quot & 0xff)); + serial_out(up, UART_DLM, quot >> 8); /* MS of divisor */ - serial_out(up, UART_LCR, cval); /* reset DLAB */ + serial_out(up, UART_LCR, cval); /* reset DLAB */ up->lcr = cval; /* Save LCR */ serial_pxa_set_mctrl(&up->port, up->port.mctrl); serial_out(up, UART_FCR, fcr); diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c index dcc72444e8e7..047530b285bb 100644 --- a/drivers/serial/serial_core.c +++ b/drivers/serial/serial_core.c @@ -342,11 +342,11 @@ uart_get_baud_rate(struct uart_port *port, struct ktermios *termios, if (flags == UPF_SPD_HI) altbaud = 57600; - if (flags == UPF_SPD_VHI) + else if (flags == UPF_SPD_VHI) altbaud = 115200; - if (flags == UPF_SPD_SHI) + else if (flags == UPF_SPD_SHI) altbaud = 230400; - if (flags == UPF_SPD_WARP) + else if (flags == UPF_SPD_WARP) altbaud = 460800; for (try = 0; try < 2; try++) { @@ -1217,9 +1217,8 @@ static void uart_set_termios(struct tty_struct *tty, /* Handle transition to B0 status */ if ((old_termios->c_cflag & CBAUD) && !(cflag & CBAUD)) uart_clear_mctrl(state->uart_port, TIOCM_RTS | TIOCM_DTR); - /* Handle transition away from B0 status */ - if (!(old_termios->c_cflag & CBAUD) && (cflag & CBAUD)) { + else if (!(old_termios->c_cflag & CBAUD) && (cflag & CBAUD)) { unsigned int mask = TIOCM_DTR; if (!(cflag & CRTSCTS) || !test_bit(TTY_THROTTLED, &tty->flags)) @@ -1234,9 +1233,8 @@ static void uart_set_termios(struct tty_struct *tty, __uart_start(tty); spin_unlock_irqrestore(&state->uart_port->lock, flags); } - /* Handle turning on CRTSCTS */ - if (!(old_termios->c_cflag & CRTSCTS) && (cflag & CRTSCTS)) { + else if (!(old_termios->c_cflag & CRTSCTS) && (cflag & CRTSCTS)) { spin_lock_irqsave(&state->uart_port->lock, flags); if (!(state->uart_port->ops->get_mctrl(state->uart_port) & TIOCM_CTS)) { tty->hw_stopped = 1; @@ -2344,7 +2342,7 @@ static const struct tty_operations uart_ops = { */ int uart_register_driver(struct uart_driver *drv) { - struct tty_driver *normal = NULL; + struct tty_driver *normal; int i, retval; BUG_ON(drv->state); @@ -2354,13 +2352,12 @@ int uart_register_driver(struct uart_driver *drv) * we have a large number of ports to handle. */ drv->state = kzalloc(sizeof(struct uart_state) * drv->nr, GFP_KERNEL); - retval = -ENOMEM; if (!drv->state) goto out; - normal = alloc_tty_driver(drv->nr); + normal = alloc_tty_driver(drv->nr); if (!normal) - goto out; + goto out_kfree; drv->tty_driver = normal; @@ -2393,12 +2390,14 @@ int uart_register_driver(struct uart_driver *drv) } retval = tty_register_driver(normal); - out: - if (retval < 0) { - put_tty_driver(normal); - kfree(drv->state); - } - return retval; + if (retval >= 0) + return retval; + + put_tty_driver(normal); +out_kfree: + kfree(drv->state); +out: + return -ENOMEM; } /** diff --git a/drivers/serial/ucc_uart.c b/drivers/serial/ucc_uart.c index 46de564aaea0..465f2fae1025 100644 --- a/drivers/serial/ucc_uart.c +++ b/drivers/serial/ucc_uart.c @@ -1179,16 +1179,18 @@ static void uart_firmware_cont(const struct firmware *fw, void *context) if (firmware->header.length != fw->size) { dev_err(dev, "invalid firmware\n"); - return; + goto out; } ret = qe_upload_firmware(firmware); if (ret) { dev_err(dev, "could not load firmware\n"); - return; + goto out; } firmware_loaded = 1; + out: + release_firmware(fw); } static int ucc_uart_probe(struct of_device *ofdev, @@ -1247,7 +1249,7 @@ static int ucc_uart_probe(struct of_device *ofdev, */ ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_HOTPLUG, filename, &ofdev->dev, - &ofdev->dev, uart_firmware_cont); + GFP_KERNEL, &ofdev->dev, uart_firmware_cont); if (ret) { dev_err(&ofdev->dev, "could not load firmware %s\n", |