diff options
Diffstat (limited to 'drivers/tty')
28 files changed, 120 insertions, 73 deletions
diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c index 2a0e51a20e34..92c9a476defc 100644 --- a/drivers/tty/hvc/hvc_xen.c +++ b/drivers/tty/hvc/hvc_xen.c @@ -492,7 +492,7 @@ static void xencons_backend_changed(struct xenbus_device *dev, case XenbusStateClosed: if (dev->state == XenbusStateClosed) break; - /* fall through - Missed the backend's CLOSING state. */ + fallthrough; /* Missed the backend's CLOSING state */ case XenbusStateClosing: xenbus_frontend_closed(dev); break; diff --git a/drivers/tty/mips_ejtag_fdc.c b/drivers/tty/mips_ejtag_fdc.c index 21e76a2ec182..a8e19b4833bf 100644 --- a/drivers/tty/mips_ejtag_fdc.c +++ b/drivers/tty/mips_ejtag_fdc.c @@ -243,7 +243,7 @@ done: /* Fall back to a 3 byte encoding */ word.bytes = 3; word.word &= 0x00ffffff; - /* Fall through */ + fallthrough; case 3: /* 3 byte encoding */ word.word |= 0x82000000; diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 0a29a94ec438..35cf12147e39 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -1584,7 +1584,7 @@ static void gsm_dlci_data(struct gsm_dlci *dlci, const u8 *data, int clen) gsm_process_modem(tty, dlci, modem, clen); tty_kref_put(tty); } - /* Fall through */ + fallthrough; case 1: /* Line state will go via DLCI 0 controls only */ default: tty_insert_flip_string(port, data, len); @@ -1986,7 +1986,7 @@ static void gsm1_receive(struct gsm_mux *gsm, unsigned char c) gsm->address = 0; gsm->state = GSM_ADDRESS; gsm->fcs = INIT_FCS; - /* Fall through */ + fallthrough; case GSM_ADDRESS: /* Address continuation */ gsm->fcs = gsm_fcs_add(gsm->fcs, c); if (gsm_read_ea(&gsm->address, c)) diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c index b09eac4b6d64..8e975cb29833 100644 --- a/drivers/tty/n_hdlc.c +++ b/drivers/tty/n_hdlc.c @@ -602,7 +602,7 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file, case TCOFLUSH: flush_tx_queue(tty); } - /* fall through - to default */ + fallthrough; /* to default */ default: error = n_tty_ioctl_helper(tty, file, cmd, arg); diff --git a/drivers/tty/n_r3964.c b/drivers/tty/n_r3964.c index f75696f0ee2d..934dd2fb2ec8 100644 --- a/drivers/tty/n_r3964.c +++ b/drivers/tty/n_r3964.c @@ -605,7 +605,6 @@ static void receive_char(struct r3964_info *pInfo, const unsigned char c) } break; case R3964_WAIT_FOR_RX_REPEAT: - /* FALLTHROUGH */ case R3964_IDLE: if (c == STX) { /* Prevent rx_queue from overflow: */ diff --git a/drivers/tty/serial/8250/8250_em.c b/drivers/tty/serial/8250/8250_em.c index db88dee3a399..f8e99995eee9 100644 --- a/drivers/tty/serial/8250/8250_em.c +++ b/drivers/tty/serial/8250/8250_em.c @@ -39,7 +39,7 @@ static void serial8250_em_serial_out(struct uart_port *p, int offset, int value) break; case UART_IER: /* IER @ 0x04 */ value &= 0x0f; /* only 4 valid bits - not Xscale */ - /* fall-through */ + fallthrough; case UART_DLL_EM: /* DLL @ 0x24 (+9) */ case UART_DLM_EM: /* DLM @ 0x28 (+9) */ writel(value, p->membase + (offset << 2)); diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c index 04b9af7ed941..2d0e7c7e408d 100644 --- a/drivers/tty/serial/8250/8250_exar.c +++ b/drivers/tty/serial/8250/8250_exar.c @@ -744,6 +744,24 @@ static const struct exar8250_board pbn_exar_XR17V35x = { .exit = pci_xr17v35x_exit, }; +static const struct exar8250_board pbn_fastcom35x_2 = { + .num_ports = 2, + .setup = pci_xr17v35x_setup, + .exit = pci_xr17v35x_exit, +}; + +static const struct exar8250_board pbn_fastcom35x_4 = { + .num_ports = 4, + .setup = pci_xr17v35x_setup, + .exit = pci_xr17v35x_exit, +}; + +static const struct exar8250_board pbn_fastcom35x_8 = { + .num_ports = 8, + .setup = pci_xr17v35x_setup, + .exit = pci_xr17v35x_exit, +}; + static const struct exar8250_board pbn_exar_XR17V4358 = { .num_ports = 12, .setup = pci_xr17v35x_setup, @@ -811,9 +829,9 @@ static const struct pci_device_id exar_pci_tbl[] = { EXAR_DEVICE(EXAR, XR17V358, pbn_exar_XR17V35x), EXAR_DEVICE(EXAR, XR17V4358, pbn_exar_XR17V4358), EXAR_DEVICE(EXAR, XR17V8358, pbn_exar_XR17V8358), - EXAR_DEVICE(COMMTECH, 4222PCIE, pbn_exar_XR17V35x), - EXAR_DEVICE(COMMTECH, 4224PCIE, pbn_exar_XR17V35x), - EXAR_DEVICE(COMMTECH, 4228PCIE, pbn_exar_XR17V35x), + EXAR_DEVICE(COMMTECH, 4222PCIE, pbn_fastcom35x_2), + EXAR_DEVICE(COMMTECH, 4224PCIE, pbn_fastcom35x_4), + EXAR_DEVICE(COMMTECH, 4228PCIE, pbn_fastcom35x_8), EXAR_DEVICE(COMMTECH, 4222PCI335, pbn_fastcom335_2), EXAR_DEVICE(COMMTECH, 4224PCI335, pbn_fastcom335_4), diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c index d1d253c4b518..31c9e83ea3cb 100644 --- a/drivers/tty/serial/8250/8250_fintek.c +++ b/drivers/tty/serial/8250/8250_fintek.c @@ -255,7 +255,7 @@ static void fintek_8250_set_irq_mode(struct fintek_8250 *pdata, bool is_level) case CHIP_ID_F81866: sio_write_mask_reg(pdata, F81866_FIFO_CTRL, F81866_IRQ_MODE1, 0); - /* fall through */ + fallthrough; case CHIP_ID_F81865: sio_write_mask_reg(pdata, F81866_IRQ_MODE, F81866_IRQ_SHARE, F81866_IRQ_SHARE); diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index 1a74d511b02a..55bb7b897d97 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -631,7 +631,7 @@ pci_timedia_setup(struct serial_private *priv, break; case 3: offset = board->uart_offset; - /* FALLTHROUGH */ + fallthrough; case 4: /* BAR 2 */ case 5: /* BAR 3 */ case 6: /* BAR 4 */ @@ -5566,6 +5566,17 @@ static const struct pci_device_id serial_pci_tbl[] = { PCI_ANY_ID, PCI_ANY_ID, 0, 0, pbn_wch384_4 }, + /* + * Realtek RealManage + */ + { PCI_VENDOR_ID_REALTEK, 0x816a, + PCI_ANY_ID, PCI_ANY_ID, + 0, 0, pbn_b0_1_115200 }, + + { PCI_VENDOR_ID_REALTEK, 0x816b, + PCI_ANY_ID, PCI_ANY_ID, + 0, 0, pbn_b0_1_115200 }, + /* Fintek PCI serial cards */ { PCI_DEVICE(0x1c29, 0x1104), .driver_data = pbn_fintek_4 }, { PCI_DEVICE(0x1c29, 0x1108), .driver_data = pbn_fintek_8 }, diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index 09475695effd..c71d647eb87a 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -1872,7 +1872,7 @@ static bool handle_rx_dma(struct uart_8250_port *up, unsigned int iir) switch (iir & 0x3f) { case UART_IIR_RX_TIMEOUT: serial8250_rx_dma_flush(up); - /* fall-through */ + fallthrough; case UART_IIR_RLSI: return true; } @@ -2275,6 +2275,10 @@ int serial8250_do_startup(struct uart_port *port) if (port->irq && !(up->port.flags & UPF_NO_THRE_TEST)) { unsigned char iir1; + + if (port->irqflags & IRQF_SHARED) + disable_irq_nosync(port->irq); + /* * Test for UARTs that do not reassert THRE when the * transmitter is idle and the interrupt has already @@ -2284,8 +2288,6 @@ int serial8250_do_startup(struct uart_port *port) * allow register changes to become visible. */ spin_lock_irqsave(&port->lock, flags); - if (up->port.irqflags & IRQF_SHARED) - disable_irq_nosync(port->irq); wait_for_xmitr(up, UART_LSR_THRE); serial_port_out_sync(port, UART_IER, UART_IER_THRI); @@ -2297,9 +2299,10 @@ int serial8250_do_startup(struct uart_port *port) iir = serial_port_in(port, UART_IIR); serial_port_out(port, UART_IER, 0); + spin_unlock_irqrestore(&port->lock, flags); + if (port->irqflags & IRQF_SHARED) enable_irq(port->irq); - spin_unlock_irqrestore(&port->lock, flags); /* * If the interrupt is not reasserted, or we otherwise diff --git a/drivers/tty/serial/8250/8250_uniphier.c b/drivers/tty/serial/8250/8250_uniphier.c index e0b73a5402db..a2978abab0db 100644 --- a/drivers/tty/serial/8250/8250_uniphier.c +++ b/drivers/tty/serial/8250/8250_uniphier.c @@ -75,7 +75,7 @@ static unsigned int uniphier_serial_in(struct uart_port *p, int offset) break; case UART_LCR: valshift = 8; - /* fall through */ + fallthrough; case UART_MCR: offset = UNIPHIER_UART_LCR_MCR; break; @@ -101,7 +101,7 @@ static void uniphier_serial_out(struct uart_port *p, int offset, int value) case UART_SCR: /* No SCR for this hardware. Use CHAR as a scratch register */ valshift = 8; - /* fall through */ + fallthrough; case UART_FCR: offset = UNIPHIER_UART_CHAR_FCR; break; @@ -109,7 +109,7 @@ static void uniphier_serial_out(struct uart_port *p, int offset, int value) valshift = 8; /* Divisor latch access bit does not exist. */ value &= ~UART_LCR_DLAB; - /* fall through */ + fallthrough; case UART_MCR: offset = UNIPHIER_UART_LCR_MCR; break; diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index 8a0352eb337c..9409be982aa6 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -517,6 +517,7 @@ config SERIAL_IMX_CONSOLE config SERIAL_IMX_EARLYCON bool "Earlycon on IMX serial port" + depends on ARCH_MXC || COMPILE_TEST depends on OF select SERIAL_EARLYCON help diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile index d056ee6cca33..caf167f0c10a 100644 --- a/drivers/tty/serial/Makefile +++ b/drivers/tty/serial/Makefile @@ -43,6 +43,7 @@ obj-$(CONFIG_SERIAL_ZS) += zs.o obj-$(CONFIG_SERIAL_SH_SCI) += sh-sci.o obj-$(CONFIG_SERIAL_CPM) += cpm_uart/ obj-$(CONFIG_SERIAL_IMX) += imx.o +obj-$(CONFIG_SERIAL_IMX_EARLYCON) += imx_earlycon.o obj-$(CONFIG_SERIAL_MPC52xx) += mpc52xx_uart.o obj-$(CONFIG_SERIAL_ICOM) += icom.o obj-$(CONFIG_SERIAL_MESON) += meson_uart.o diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index c010f639298d..67498594d7d7 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -2241,9 +2241,8 @@ pl011_console_write(struct console *co, const char *s, unsigned int count) clk_disable(uap->clk); } -static void __init -pl011_console_get_options(struct uart_amba_port *uap, int *baud, - int *parity, int *bits) +static void pl011_console_get_options(struct uart_amba_port *uap, int *baud, + int *parity, int *bits) { if (pl011_read(uap, REG_CR) & UART01x_CR_UARTEN) { unsigned int lcr_h, ibrd, fbrd; @@ -2276,7 +2275,7 @@ pl011_console_get_options(struct uart_amba_port *uap, int *baud, } } -static int __init pl011_console_setup(struct console *co, char *options) +static int pl011_console_setup(struct console *co, char *options) { struct uart_amba_port *uap; int baud = 38400; @@ -2344,8 +2343,8 @@ static int __init pl011_console_setup(struct console *co, char *options) * * Returns 0 if console matches; otherwise non-zero to use default matching */ -static int __init pl011_console_match(struct console *co, char *name, int idx, - char *options) +static int pl011_console_match(struct console *co, char *name, int idx, + char *options) { unsigned char iotype; resource_size_t addr; @@ -2615,7 +2614,7 @@ static int pl011_setup_port(struct device *dev, struct uart_amba_port *uap, static int pl011_register_port(struct uart_amba_port *uap) { - int ret; + int ret, i; /* Ensure interrupts from this UART are masked and cleared */ pl011_write(0, uap, REG_IMSC); @@ -2626,6 +2625,9 @@ static int pl011_register_port(struct uart_amba_port *uap) if (ret < 0) { dev_err(uap->port.dev, "Failed to register AMBA-PL011 driver\n"); + for (i = 0; i < ARRAY_SIZE(amba_ports); i++) + if (amba_ports[i] == uap) + amba_ports[i] = NULL; return ret; } } diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index e43471b33710..bb5fc8bdd57a 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -1845,7 +1845,7 @@ static void atmel_get_ip_name(struct uart_port *port) version = atmel_uart_readl(port, ATMEL_US_VERSION); switch (version) { case 0x814: /* sama5d2 */ - /* fall through */ + fallthrough; case 0x701: /* sama5d4 */ atmel_port->fidi_min = 3; atmel_port->fidi_max = 65535; diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 8573fc9cb0cd..76b94d0ff586 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -587,7 +587,6 @@ static irqreturn_t serial_omap_irq(int irq, void *dev_id) transmit_chars(up, lsr); break; case UART_IIR_RX_TIMEOUT: - /* FALLTHROUGH */ case UART_IIR_RDI: serial_omap_rdi(up, lsr); break; @@ -598,7 +597,6 @@ static irqreturn_t serial_omap_irq(int irq, void *dev_id) /* simply try again */ break; case UART_IIR_XOFF: - /* FALLTHROUGH */ default: break; } diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c index 3aa29d201f54..184b458820a3 100644 --- a/drivers/tty/serial/qcom_geni_serial.c +++ b/drivers/tty/serial/qcom_geni_serial.c @@ -361,11 +361,16 @@ static int qcom_geni_serial_get_char(struct uart_port *uport) return NO_POLL_CHAR; if (word_cnt == 1 && (status & RX_LAST)) + /* + * NOTE: If RX_LAST_BYTE_VALID is 0 it needs to be + * treated as if it was BYTES_PER_FIFO_WORD. + */ private_data->poll_cached_bytes_cnt = (status & RX_LAST_BYTE_VALID_MSK) >> RX_LAST_BYTE_VALID_SHFT; - else - private_data->poll_cached_bytes_cnt = 4; + + if (private_data->poll_cached_bytes_cnt == 0) + private_data->poll_cached_bytes_cnt = BYTES_PER_FIFO_WORD; private_data->poll_cached_bytes = readl(uport->membase + SE_GENI_RX_FIFOn); @@ -1098,7 +1103,7 @@ static unsigned int qcom_geni_serial_tx_empty(struct uart_port *uport) } #ifdef CONFIG_SERIAL_QCOM_GENI_CONSOLE -static int __init qcom_geni_console_setup(struct console *co, char *options) +static int qcom_geni_console_setup(struct console *co, char *options) { struct uart_port *uport; struct qcom_geni_serial_port *port; diff --git a/drivers/tty/serial/rda-uart.c b/drivers/tty/serial/rda-uart.c index b5ef86ae2746..85366e059258 100644 --- a/drivers/tty/serial/rda-uart.c +++ b/drivers/tty/serial/rda-uart.c @@ -259,7 +259,7 @@ static void rda_uart_set_termios(struct uart_port *port, case CS5: case CS6: dev_warn(port->dev, "bit size not supported, using 7 bits\n"); - /* Fall through */ + fallthrough; case CS7: ctrl &= ~RDA_UART_DBITS_8; break; diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c index 8ed3482d2e1e..8ae3e03fbd8c 100644 --- a/drivers/tty/serial/samsung_tty.c +++ b/drivers/tty/serial/samsung_tty.c @@ -1905,9 +1905,11 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport, ourport->tx_irq = ret + 1; } - ret = platform_get_irq(platdev, 1); - if (ret > 0) - ourport->tx_irq = ret; + if (!s3c24xx_serial_has_interrupt_mask(port)) { + ret = platform_get_irq(platdev, 1); + if (ret > 0) + ourport->tx_irq = ret; + } /* * DMA is currently supported only on DT platforms, if DMA properties * are specified. diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c index b87914ae6da8..bd13014a1c53 100644 --- a/drivers/tty/serial/serial-tegra.c +++ b/drivers/tty/serial/serial-tegra.c @@ -876,7 +876,7 @@ static irqreturn_t tegra_uart_isr(int irq, void *data) tegra_uart_write(tup, ier, UART_IER); break; } - /* Fall through */ + fallthrough; case 2: /* Receive */ if (!tup->use_rx_pio) { is_rx_start = tup->rx_in_progress; diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 3403dd790517..124524ecfe26 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -1916,24 +1916,12 @@ static inline bool uart_console_enabled(struct uart_port *port) return uart_console(port) && (port->cons->flags & CON_ENABLED); } -static void __uart_port_spin_lock_init(struct uart_port *port) +static void uart_port_spin_lock_init(struct uart_port *port) { spin_lock_init(&port->lock); lockdep_set_class(&port->lock, &port_lock_key); } -/* - * Ensure that the serial console lock is initialised early. - * If this port is a console, then the spinlock is already initialised. - */ -static inline void uart_port_spin_lock_init(struct uart_port *port) -{ - if (uart_console(port)) - return; - - __uart_port_spin_lock_init(port); -} - #if defined(CONFIG_SERIAL_CORE_CONSOLE) || defined(CONFIG_CONSOLE_POLL) /** * uart_console_write - write a console message to a serial port @@ -2086,7 +2074,15 @@ uart_set_options(struct uart_port *port, struct console *co, struct ktermios termios; static struct ktermios dummy; - uart_port_spin_lock_init(port); + /* + * Ensure that the serial-console lock is initialised early. + * + * Note that the console-enabled check is needed because of kgdboc, + * which can end up calling uart_set_options() for an already enabled + * console via tty_find_polling_driver() and uart_poll_init(). + */ + if (!uart_console_enabled(port) && !port->console_reinit) + uart_port_spin_lock_init(port); memset(&termios, 0, sizeof(struct ktermios)); @@ -2101,7 +2097,7 @@ uart_set_options(struct uart_port *port, struct console *co, switch (parity) { case 'o': case 'O': termios.c_cflag |= PARODD; - /*fall through*/ + fallthrough; case 'e': case 'E': termios.c_cflag |= PARENB; break; @@ -2379,13 +2375,6 @@ uart_configure_port(struct uart_driver *drv, struct uart_state *state, uart_change_pm(state, UART_PM_STATE_ON); /* - * If this driver supports console, and it hasn't been - * successfully registered yet, initialise spin lock for it. - */ - if (port->cons && !(port->cons->flags & CON_ENABLED)) - __uart_port_spin_lock_init(port); - - /* * Ensure that the modem control lines are de-activated. * keep the DTR setting that is set in uart_set_options() * We probably don't need a spinlock around this, but @@ -2801,10 +2790,12 @@ static ssize_t console_store(struct device *dev, if (oldconsole && !newconsole) { ret = unregister_console(uport->cons); } else if (!oldconsole && newconsole) { - if (uart_console(uport)) + if (uart_console(uport)) { + uport->console_reinit = 1; register_console(uport->cons); - else + } else { ret = -ENOENT; + } } } else { ret = -ENXIO; @@ -2900,7 +2891,12 @@ int uart_add_one_port(struct uart_driver *drv, struct uart_port *uport) goto out; } - uart_port_spin_lock_init(uport); + /* + * If this port is in use as a console then the spinlock is already + * initialised. + */ + if (!uart_console_enabled(uport)) + uart_port_spin_lock_init(uport); if (uport->cons && uport->dev) of_console_check(uport->dev->of_node, uport->cons->name, uport->line); diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c index 143300a80090..ba503dd04ce2 100644 --- a/drivers/tty/serial/stm32-usart.c +++ b/drivers/tty/serial/stm32-usart.c @@ -970,7 +970,7 @@ static int stm32_init_port(struct stm32_port *stm32port, return ret; if (stm32port->info->cfg.has_wakeup) { - stm32port->wakeirq = platform_get_irq(pdev, 1); + stm32port->wakeirq = platform_get_irq_optional(pdev, 1); if (stm32port->wakeirq <= 0 && stm32port->wakeirq != -ENXIO) return stm32port->wakeirq ? : -ENODEV; } diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c index 8ce9a7a256e5..319e5ceb6130 100644 --- a/drivers/tty/serial/sunsu.c +++ b/drivers/tty/serial/sunsu.c @@ -514,7 +514,7 @@ static void receive_kbd_ms_chars(struct uart_sunsu_port *up, int is_break) switch (ret) { case 2: sunsu_change_mouse_baud(up); - /* fallthru */ + fallthrough; case 1: break; diff --git a/drivers/tty/serial/sunzilog.c b/drivers/tty/serial/sunzilog.c index 7ea06bbc6197..001e19d7c17d 100644 --- a/drivers/tty/serial/sunzilog.c +++ b/drivers/tty/serial/sunzilog.c @@ -306,7 +306,7 @@ static void sunzilog_kbdms_receive_chars(struct uart_sunzilog_port *up, switch (ret) { case 2: sunzilog_change_mouse_baud(up); - /* fallthru */ + fallthrough; case 1: break; diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c index 2833f1418d6d..a9b1ee27183a 100644 --- a/drivers/tty/serial/xilinx_uartps.c +++ b/drivers/tty/serial/xilinx_uartps.c @@ -544,7 +544,7 @@ static int cdns_uart_clk_notifier_cb(struct notifier_block *nb, cdns_uart->baud = cdns_uart_set_baud_rate(cdns_uart->port, cdns_uart->baud); - /* fall through */ + fallthrough; case ABORT_RATE_CHANGE: if (!locked) spin_lock_irqsave(&cdns_uart->port->lock, flags); diff --git a/drivers/tty/tty_ioctl.c b/drivers/tty/tty_ioctl.c index 9245fffdbceb..e18f318586ab 100644 --- a/drivers/tty/tty_ioctl.c +++ b/drivers/tty/tty_ioctl.c @@ -866,7 +866,7 @@ static int __tty_perform_flush(struct tty_struct *tty, unsigned long arg) ld->ops->flush_buffer(tty); tty_unthrottle(tty); } - /* fall through */ + fallthrough; case TCOFLUSH: tty_driver_flush_buffer(tty); break; diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index ccb533fd00a2..19cd4a4b1939 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -1201,7 +1201,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc, unsigned int old_rows, old_row_size, first_copied_row; unsigned int new_cols, new_rows, new_row_size, new_screen_size; unsigned int user; - unsigned short *newscreen; + unsigned short *oldscreen, *newscreen; struct uni_screen *new_uniscr = NULL; WARN_CONSOLE_UNLOCKED(); @@ -1299,10 +1299,11 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc, if (new_scr_end > new_origin) scr_memsetw((void *)new_origin, vc->vc_video_erase_char, new_scr_end - new_origin); - kfree(vc->vc_screenbuf); + oldscreen = vc->vc_screenbuf; vc->vc_screenbuf = newscreen; vc->vc_screenbuf_size = new_screen_size; set_origin(vc); + kfree(oldscreen); /* do part of a reset_terminal() */ vc->vc_top = 0; @@ -1553,7 +1554,7 @@ static void csi_J(struct vc_data *vc, int vpar) break; case 3: /* include scrollback */ flush_scrollback(vc); - /* fallthrough */ + fallthrough; case 2: /* erase whole display */ vc_uniscr_clear_lines(vc, 0, vc->vc_rows); count = vc->vc_cols * vc->vc_rows; @@ -2167,7 +2168,7 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c) lf(vc); if (!is_kbd(vc, lnm)) return; - /* fall through */ + fallthrough; case 13: cr(vc); return; @@ -2306,7 +2307,7 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c) return; } vc->vc_priv = EPecma; - /* fall through */ + fallthrough; case ESgetpars: if (c == ';' && vc->vc_npar < NPAR - 1) { vc->vc_npar++; diff --git a/drivers/tty/vt/vt_ioctl.c b/drivers/tty/vt/vt_ioctl.c index 91c301775047..a4e520bdd521 100644 --- a/drivers/tty/vt/vt_ioctl.c +++ b/drivers/tty/vt/vt_ioctl.c @@ -806,12 +806,22 @@ static int vt_resizex(struct vc_data *vc, struct vt_consize __user *cs) console_lock(); vcp = vc_cons[i].d; if (vcp) { + int ret; + int save_scan_lines = vcp->vc_scan_lines; + int save_font_height = vcp->vc_font.height; + if (v.v_vlin) vcp->vc_scan_lines = v.v_vlin; if (v.v_clin) vcp->vc_font.height = v.v_clin; vcp->vc_resize_user = 1; - vc_resize(vcp, v.v_cols, v.v_rows); + ret = vc_resize(vcp, v.v_cols, v.v_rows); + if (ret) { + vcp->vc_scan_lines = save_scan_lines; + vcp->vc_font.height = save_font_height; + console_unlock(); + return ret; + } } console_unlock(); } |