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linux/drivers/tty/serial
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Peter Hurley c09babfab7 serial: 8250: Fix UART_BUG_TXEN workaround 
UARTs which do not trigger THRE interrupt if the fifo is already
empty when the interrupt is enabled need tx primed manually. These
UARTs are identified by the UART_BUG_TXEN flag to enable the
required workaround.

However, the current workaround is broken; if the fifo is already
empty but the shifter is still transmitting, then serial8250_tx_chars()
will not be called but no further THRE interrupt will occur, and
tx will stall. The appropriate check is for fifo empty (THRE), not
transmitter empty (TEMT).

Signed-off-by: Dick Hollenbeck <dick@softplc.com>
[pjh: rewrote commit log]
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-02-07 18:44:55 +08:00
..
8250
serial: 8250: Fix UART_BUG_TXEN workaround
2015-02-07 18:44:55 +08:00
cpm_uart
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
jsm
serial: jsm: Fix unnecessary space before function ptr arguments
2014-11-25 17:06:38 -08:00
21285.c
serial: treewide: Remove empty implementations of enable_ms()
2014-07-09 17:29:38 -07:00
68328serial.c
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
2013-05-10 07:22:35 -07:00
altera_jtaguart.c
serial: altera-juart: fix NULL device in log message
2015-01-09 14:28:17 -08:00
altera_uart.c
serial: altera-uart: fix NULL device in log message
2015-01-09 14:28:17 -08:00
amba-pl010.c
serial: Test/disable MSIs if switching from N_PPS
2014-11-06 14:57:27 -08:00
amba-pl011.c
serial: pl011: Add device tree support for RX DMA polling
2014-11-07 08:35:56 -08:00
apbuart.c
tty: serial: drop owner assignment from platform_drivers
2014-10-20 16:21:45 +02:00
apbuart.h
…
ar933x_uart.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
arc_uart.c
tty: serial: drop owner assignment from platform_drivers
2014-10-20 16:21:45 +02:00
atmel_serial.c
tty/serial: at91: fix typo and indentation
2015-01-09 14:20:49 -08:00
bcm63xx_uart.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
bfin_sport_uart.c
tty: pr_warning->pr_warn and logging neatening
2014-11-25 17:06:38 -08:00
bfin_sport_uart.h
…
bfin_uart.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
clps711x.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
crisv10.c
cris: Remove obsolete ASYNC_SPLIT_TERMIOS behavior
2014-11-05 20:18:30 -08:00
crisv10.h
cris: Remove obsolete ASYNC_SPLIT_TERMIOS behavior
2014-11-05 20:18:30 -08:00
digicolor-usart.c
tty/serial: digicolor: remove sysrq reference
2015-02-02 10:11:25 -08:00
dz.c
serial: treewide: Remove empty implementations of enable_ms()
2014-07-09 17:29:38 -07:00
dz.h
…
earlycon-arm-semihost.c
tty/serial: add arm/arm64 semihosting earlycon
2014-04-24 16:32:27 -07:00
earlycon.c
tty/serial: earlycon: Fix print for implied MMIO case
2014-11-05 19:45:52 -08:00
efm32-uart.c
tty: serial: drop owner assignment from platform_drivers
2014-10-20 16:21:45 +02:00
etraxfs-uart.c
serial: driver for ETRAX FS UART
2015-02-07 18:43:16 +08:00
fsl_lpuart.c
tty: serial: fsl_lpuart: terminate DMA on buffer flush
2015-02-02 10:09:55 -08:00
icom.c
serial: icom: fix error return code
2014-11-25 17:06:39 -08:00
icom.h
…
ifx6x60.c
serial: ifx6x60: Remove casting the return value which is a void pointer
2013-09-26 14:29:58 -07:00
ifx6x60.h
serial:ifx6x60:Prevent data transfer when IFX6x60 port is shutdown
2012-11-01 08:50:01 -07:00
imx.c
serial: imx: Fix imx_flush_buffer()
2015-02-02 10:11:24 -08:00
ioc3_serial.c
serial: treewide: Remove empty implementations of enable_ms()
2014-07-09 17:29:38 -07:00
ioc4_serial.c
serial: treewide: Remove empty implementations of enable_ms()
2014-07-09 17:29:38 -07:00
ip22zilog.c
serial: use container_of to resolve uart_ip22zilog_port from uart_port
2014-11-05 19:20:52 -08:00
ip22zilog.h
…
Kconfig
serial: driver for ETRAX FS UART
2015-02-07 18:43:16 +08:00
kgdb_nmi.c
serial: kgdb_nmi: No CON_ENABLED by default
2014-09-08 16:26:07 -07:00
kgdboc.c
treewide: Convert retrun typos to return
2013-09-04 12:26:36 +02:00
lantiq.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
lpc32xx_hs.c
tty: serial: drop owner assignment from platform_drivers
2014-10-20 16:21:45 +02:00
m32r_sio_reg.h
m32r: relocate drivers back out of 8250 dir
2012-02-08 15:04:32 -08:00
m32r_sio.c
serial: use container_of to resolve uart_sio_port from uart_port
2014-11-05 19:20:52 -08:00
m32r_sio.h
TTY: serial, include pci.h in m32r_sio
2012-03-08 11:47:02 -08:00
Makefile
serial: driver for ETRAX FS UART
2015-02-07 18:43:16 +08:00
max310x.c
drivers/max310: Use the rs485 functions on serial_core
2014-11-06 15:00:15 -08:00
max3100.c
serial: use dev_get_platdata()
2013-07-31 17:56:15 -07:00
mcf.c
serial: mcf: fix no driver name in probe output
2015-01-09 14:06:57 -08:00
men_z135_uart.c
tty: serial: men_z135_uart: Fix driver for changes in hardware
2015-02-02 10:11:27 -08:00
meson_uart.c
tty: serial: drop owner assignment from platform_drivers
2014-10-20 16:21:45 +02:00
mfd.c
More ACPI and power management updates for 3.19-rc1
2014-12-18 20:28:33 -08:00
mpc52xx_uart.c
tty: serial: drop owner assignment from platform_drivers
2014-10-20 16:21:45 +02:00
mpsc.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
msm_serial_hs.c
More ACPI and power management updates for 3.19-rc1
2014-12-18 20:28:33 -08:00
msm_serial.c
tty: serial: msm_serial: Remove console unregistration from driver exit.
2015-02-02 10:11:25 -08:00
msm_serial.h
tty: serial: msm: Support sysrq on uartDM devices
2014-11-06 14:57:22 -08:00
msm_smd_tty.c
TTY: msm_smd_tty, clean up activate/shutdown
2013-03-18 16:19:44 -07:00
mux.c
serial: treewide: Remove empty implementations of enable_ms()
2014-07-09 17:29:38 -07:00
mxs-auart.c
serial: mxs-auart: Remove unneeded zeroing of 'ret'
2015-02-02 10:11:25 -08:00
netx-serial.c
tty: serial: drop owner assignment from platform_drivers
2014-10-20 16:21:45 +02:00
nwpserial.c
serial: Fix build failure caused by missing header file
2014-09-08 16:17:45 -07:00
of_serial.c
serial: of-serial: fetch line number from DT
2015-02-03 15:52:13 -08:00
omap-serial.c
serial: omap: Fix RTS handling
2015-02-02 10:11:28 -08:00
pch_uart.c
pch_uart: don't hardcode PCI slot to get DMA device
2014-08-01 16:04:21 -07:00
pmac_zilog.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
pmac_zilog.h
…
pnx8xxx_uart.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
pxa.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
rp2.c
tty: remove DEFINE_PCI_DEVICE_TABLE macro
2013-12-08 17:09:07 -08:00
sa1100.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
samsung.c
serial: samsung: earlycon support depends on CONFIG_SERIAL_SAMSUNG_CONSOLE
2015-02-02 11:11:00 -08:00
samsung.h
serial: samsung: add DMA support for RX
2015-01-09 14:25:39 -08:00
sb1250-duart.c
serial: Fix IGNBRK handling
2014-06-19 13:04:52 -07:00
sc16is7xx.c
serial/sc16is7xx: Use the rs485 functions on serial_core
2014-11-06 14:59:21 -08:00
sccnxp.c
tty: serial: drop owner assignment from platform_drivers
2014-10-20 16:21:45 +02:00
serial_core.c
serial: core: Rework hw-assisted flow control support
2015-02-02 10:11:28 -08:00
serial_ks8695.c
serial: Fix IGNBRK handling
2014-06-19 13:04:52 -07:00
serial_mctrl_gpio.c
serial: mctrl_gpio: use gpiod_set_array function
2014-12-02 14:25:42 +01:00
serial_mctrl_gpio.h
tty/serial: Add GPIOLIB helpers for controlling modem lines
2014-05-28 12:49:14 -07:00
serial_txx9.c
tty: serial: drop owner assignment from platform_drivers
2014-10-20 16:21:45 +02:00
serial-tegra.c
serial: tegra: clean up tty-flag assignments
2014-11-25 17:06:39 -08:00
sh-sci.c
serial: sh-sci: Fix R-Car SCIF and HSCIF overrun handling
2015-02-02 10:11:26 -08:00
sh-sci.h
serial: sh-sci: Move overrun_bit and error_mask fields out of pdata
2013-12-24 11:17:48 +09:00
sirfsoc_uart.c
serial: sirf: rename marco to atlas7
2015-01-09 14:17:59 -08:00
sirfsoc_uart.h
serial: sirf: rename marco to atlas7
2015-01-09 14:17:59 -08:00
sn_console.c
serial: treewide: Remove empty implementations of enable_ms()
2014-07-09 17:29:38 -07:00
sprd_serial.c
tty/serial: Add Spreadtrum sc9836-uart driver support
2015-02-02 10:11:28 -08:00
st-asc.c
tty: serial: drop owner assignment from platform_drivers
2014-10-20 16:21:45 +02:00
suncore.c
tty: sparc: rename drivers/tty/serial/suncore.h -> include/linux/sunserialcore.h
2012-02-10 10:44:35 -08:00
sunhv.c
tty: serial: drop owner assignment from platform_drivers
2014-10-20 16:21:45 +02:00
sunsab.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
sunsab.h
…
sunsu.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
sunzilog.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
sunzilog.h
…
tilegx.c
serial: treewide: Remove empty implementations of enable_ms()
2014-07-09 17:29:38 -07:00
timbuart.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
timbuart.h
…
uartlite.c
tty: serial: uartlite: Remove .owner field for driver
2014-09-08 16:09:13 -07:00
ucc_uart.c
tty: serial: drop owner assignment from platform_drivers
2014-10-20 16:21:45 +02:00
vr41xx_siu.c
tty: serial: drop owner assignment from platform_drivers
2014-10-20 16:21:45 +02:00
vt8500_serial.c
tty: serial: drop owner assignment from platform_drivers
2014-10-20 16:21:45 +02:00
xilinx_uartps.c
tty: xuartps: Fix RX hang, and TX corruption in termios call
2015-02-02 10:11:25 -08:00
zs.c
serial: Fix IGNBRK handling
2014-06-19 13:04:52 -07:00
zs.h
…