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linux/drivers/tty/serial
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John Ogness eda0cd3546 tty: serial: 8250: omap: synchronize rx_running 
The rx_running flag should show if DMA is currently active. However
there is a window between when the flag is set/cleared and when
the DMA is started/stopped. Because the flag is queried from both
hard and soft irq contexts, the driver can make incorrect
decisions and do things like start a DMA transfer using a buffer
that is already setup to be used for a DMA transfer.

This patch adds a spinlock to synchronize the rx_running flag and
close the above mentioned window.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-06 22:27:01 +02:00
..
8250
tty: serial: 8250: omap: synchronize rx_running
2015-05-06 22:27:01 +02:00
cpm_uart
tty: cpm_uart: replace CONFIG_8xx by CONFIG_CPM1
2015-03-26 23:00:36 +01:00
jsm
serial: jsm: some off by one bugs
2015-03-26 23:00:36 +01:00
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
drivers/tty/serial: altera: fix typos in #endif comments
2015-05-06 22:26:58 +02:00
altera_uart.c
drivers/tty/serial: altera: fix typos in #endif comments
2015-05-06 22:26:58 +02:00
amba-pl010.c
serial: Test/disable MSIs if switching from N_PPS
2014-11-06 14:57:27 -08:00
amba-pl011.c
serial/amba-pl011: Refactor and simplify TX FIFO handling
2015-05-06 22:26:56 +02:00
apbuart.c
tty: constify of_device_id array
2015-03-26 22:49:10 +01:00
apbuart.h
…
ar933x_uart.c
serial: ar933x_uart: Fix off-by-one for checking valid alias id
2015-03-07 03:20:25 +01:00
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: handle IRQ status more safely
2015-05-06 22:26:58 +02:00
bcm63xx_uart.c
tty: serial/bcm63xx_uart: fix sparse warning
2015-03-07 03:13:07 +01:00
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
serial: bfin: ctsrts: enfore Kconfig naming convention
2015-05-06 22:26:59 +02:00
clps711x.c
serial: clps711x: fail if mctrl_gpio_init fails
2015-03-07 03:15:03 +01:00
crisv10.c
drivers/tty/serial/crisv10.c: rename CPP identifier CONFIG_ETRAX_SERX_DTR_RI_DSR_CD_MIXED
2015-05-06 22:26:58 +02:00
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
serial: earlycon: Enable earlycon without command line param
2015-03-26 17:25:27 +01:00
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
Merge 4.0-rc7 into tty-next
2015-04-07 11:07:20 +02:00
icom.c
serial: icom: fix error return code
2014-11-25 17:06:39 -08:00
icom.h
…
ifx6x60.c
serial: ifx6x60: Remove superfluous casts when calling request_irq()
2015-05-06 22:27:01 +02:00
ifx6x60.h
serial:ifx6x60:Prevent data transfer when IFX6x60 port is shutdown
2012-11-01 08:50:01 -07:00
imx.c
serial: imx: Remove return value from imx_setup_ufcr()
2015-05-06 22:26:57 +02:00
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: SERIAL_IFX6X60 should depend on HAS_DMA
2015-05-06 22:27:01 +02:00
kgdb_nmi.c
serial: kgdb_nmi: Use bool function return values of true/false not 1/0
2015-05-06 22:26:57 +02:00
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_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
…
Makefile
tty: serial: Remove orphaned serial driver
2015-03-26 22:31:09 +01:00
max310x.c
drivers/max310: Use the rs485 functions on serial_core
2014-11-06 15:00:15 -08:00
max3100.c
tty: max3100: use msecs_to_jiffies for time conversion
2015-03-07 03:13:08 +01:00
mcf.c
drivers/tty/serial/mcf.c: fix typo on SERIAL_MCF_CONSOLE
2015-05-06 22:26:59 +02:00
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
mpc52xx_uart.c
drivers/tty/serial/mpc52xx_uart.c: fix typo in C comment
2015-05-06 22:26:59 +02:00
mpsc.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -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_serial: Remove dead code
2015-03-26 22:31:09 +01:00
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
tty: constify of_device_id array
2015-03-26 22:49:10 +01:00
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: Remove device_type = "serial" registration
2015-04-28 14:27:38 +02:00
omap-serial.c
tty/serial: omap: fix !wakeirq message
2015-03-26 22:38:36 +01:00
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
tty: constify of_device_id array
2015-03-26 22:49:10 +01:00
pmac_zilog.h
…
pnx8xxx_uart.c
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
pxa.c
tty: constify of_device_id array
2015-03-26 22:49:10 +01:00
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: fix serial console break
2015-04-28 14:27:38 +02:00
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
sc16is7xx: expose RTS inversion in RS-485 mode
2015-04-10 14:43:48 +02:00
sccnxp.c
tty: serial: drop owner assignment from platform_drivers
2014-10-20 16:21:45 +02:00
serial_core.c
tty: remove buf parameter from tty_name()
2015-05-06 22:26:57 +02:00
serial_ks8695.c
serial: Fix IGNBRK handling
2014-06-19 13:04:52 -07:00
serial_mctrl_gpio.c
serial: mctrl_gpio: Fix build warnings
2015-03-11 13:55:20 +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
tty: constify of_device_id array
2015-03-26 22:49:10 +01:00
sh-sci.c
serial: sh-sci: Update calculation of timeout for DMA
2015-03-26 22:42:27 +01:00
sh-sci.h
drivers/tty/serial/sh-sci.h: remove dead reference on ARCH_SH7372
2015-05-06 22:26:57 +02:00
sirfsoc_uart.c
serial: sirf: move from clk_get to devm_clk_get
2015-05-06 22:27:00 +02:00
sirfsoc_uart.h
Revert "serial: sirf: add a new uart type support"
2015-05-06 22:27:00 +02:00
sn_console.c
serial: treewide: Remove empty implementations of enable_ms()
2014-07-09 17:29:38 -07:00
sprd_serial.c
Merge 4.0-rc3 into tty-testing
2015-03-09 07:08:37 +01:00
st-asc.c
tty: constify of_device_id array
2015-03-26 22:49:10 +01:00
suncore.c
…
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
serial: xilinx: Use platform_get_irq to get irq description structure
2015-04-28 14:26:21 +02:00
ucc_uart.c
tty: constify of_device_id array
2015-03-26 22:49:10 +01:00
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
serial: xilinx: Use platform_get_irq to get irq description structure
2015-04-28 14:26:21 +02:00
zs.c
serial: Fix IGNBRK handling
2014-06-19 13:04:52 -07:00
zs.h
…