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linux/drivers/tty/serial
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Uwe Kleine-König 079a036f42 serial/mxs-auart: increase time to wait for transmitter to become idle 
Without this patch the driver waits ~1 ms for the UART to become idle. At
115200n8 this time is (theoretically) enough to transfer 11.5 characters
(= 115200 bits/s / (10 Bits/char) * 1ms). As the mxs-auart has a fifo size
of 16 characters the clock is gated too early. The problem is worse for
lower baud rates.

This only happens to really shut down the transmitter in the middle of a
transfer if /dev/ttyAPPx isn't opened in userspace (e.g. by a getty) but
was at least once (because the bootloader doesn't disable the transmitter).

So increase the timeout to 20 ms which should be enough for 9600n8, too.
Moreover skip gating the clock if the timeout is elapsed.

Cc: stable@vger.kernel.org # v2.6.39+
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-26 16:34:00 -07:00
..
8250
tty/8250_early: Don't truncate last character of options
2013-07-24 15:23:38 -07:00
cpm_uart
serial: use platform_{get,set}_drvdata()
2013-06-03 10:21:33 -07:00
jsm
TTY: jsm, remove superfluous check
2013-03-18 16:17:20 -07:00
21285.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
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
tty: serial: altera_jtaguart: Simplify altera_jtaguart_init()
2013-02-05 11:13:51 -08:00
altera_uart.c
serial: altera: remove unnecessary platform_set_drvdata()
2013-05-20 11:53:46 -07:00
amba-pl010.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
amba-pl011.c
Pin control changes for the v3.11 kernel cycle:
2013-07-03 11:48:03 -07:00
apbuart.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
apbuart.h
…
ar933x_uart.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
arc_uart.c
TTY: cleanup tty->hw_stopped uses
2013-03-18 16:24:30 -07:00
atmel_serial.c
tty: atmel_serial: prepare clk before calling enable
2013-06-24 16:35:03 -07:00
bcm63xx_uart.c
MIPS: BCM63XX: merge bcm63xx_clk.h into bcm63xx/clk.c
2013-05-08 01:19:04 +02:00
bfin_sport_uart.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
bfin_sport_uart.h
tty: bfin-sport-uart: Rx interrupt is not called always with irq disabled.
2011-12-09 19:05:33 -08:00
bfin_uart.c
TTY: serial/bfin_uart, unbreak build with KGDB enabled
2013-03-18 16:24:30 -07:00
clps711x.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
crisv10.c
crisv10: use counts from tty_port
2013-03-18 16:26:33 -07:00
crisv10.h
crisv10: use counts from tty_port
2013-03-18 16:26:33 -07:00
dz.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
dz.h
…
efm32-uart.c
serial/efm32: parse location property
2013-01-21 13:56:46 -08:00
fsl_lpuart.c
tty: serial: add Freescale lpuart driver support
2013-06-08 22:30:44 -07:00
icom.c
driver: tty: serial: remove cast for kzalloc return value
2013-03-18 17:09:37 -07:00
icom.h
…
ifx6x60.c
tty: ifx6x60: Remove unused suspend/resume callbacks
2013-03-18 16:29:29 -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 serial clock unbalance
2013-06-17 12:49:43 -07:00
ioc3_serial.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
ioc4_serial.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
ip22zilog.c
TTY: ip22zilog, fix tty_flip_buffer_push call
2013-01-16 07:36:47 -08:00
ip22zilog.h
…
Kconfig
serial: tegra: correct help message in Kconfig from 'ttyHS' to 'ttyTHS'
2013-07-24 15:23:38 -07:00
kgdb_nmi.c
kgdb: remove #include <linux/serial_8250.h> from kgdb.h
2013-02-04 15:35:26 -08:00
kgdboc.c
KGDB/KDB fixes and cleanups
2012-10-13 11:16:58 +09:00
lantiq.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
lpc32xx_hs.c
serial: lpc32xx: Fix fallout from tty_port conversion
2013-01-18 16:05:15 -08:00
m32r_sio_reg.h
m32r: relocate drivers back out of 8250 dir
2012-02-08 15:04:32 -08:00
m32r_sio.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
m32r_sio.h
TTY: serial, include pci.h in m32r_sio
2012-03-08 11:47:02 -08:00
Makefile
tty: serial: add Freescale lpuart driver support
2013-06-08 22:30:44 -07:00
max310x.c
tty: max310x: Use dev_pm_ops
2013-03-18 16:29:29 -07:00
max3100.c
serial: max3100: use spi_get_drvdata() and spi_set_drvdata()
2013-04-05 15:49:39 -07:00
mcf.c
serial: mcf: missing uart_unregister_driver() on error in mcf_init()
2013-05-20 11:54:56 -07:00
mfd.c
Power management and ACPI updates for 3.11-rc1
2013-07-03 14:35:40 -07:00
mpc52xx_uart.c
serial/mpc52xx_uart: fix kernel panic when system reboot
2013-06-17 12:49:43 -07:00
mpsc.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
mrst_max3110.c
tty: mrst_max3110: Use dev_pm_ops
2013-03-18 16:29:29 -07:00
mrst_max3110.h
max3110: add sysrq support
2011-08-26 11:01:15 -07:00
msm_serial_hs.c
TTY: serial/msm_serial_hs, remove unused tty
2013-03-18 16:24:30 -07:00
msm_serial.c
msm_serial: Use devm_clk_get() and properly return errors
2013-06-24 13:06:41 -07:00
msm_serial.h
tty: remove invalid location line in file header
2011-04-19 16:33:36 -07:00
msm_smd_tty.c
TTY: msm_smd_tty, clean up activate/shutdown
2013-03-18 16:19:44 -07:00
mux.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
mxs-auart.c
serial/mxs-auart: increase time to wait for transmitter to become idle
2013-07-26 16:34:00 -07:00
netx-serial.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
nwpserial.c
tty: nwpserial: Pass correct pointer to free_irq()
2013-05-20 11:54:55 -07:00
of_serial.c
serial: use platform_{get,set}_drvdata()
2013-06-03 10:21:33 -07:00
omap-serial.c
serial: omap: Fix device tree based PM runtime
2013-06-17 12:49:44 -07:00
pch_uart.c
pch_uart: Add uart_clk selection for the MinnowBoard
2013-06-25 21:24:11 -07:00
pmac_zilog.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
pmac_zilog.h
tty/serial/pmac_zilog: Fix suspend & resume
2011-12-16 11:10:01 +11:00
pnx8xxx_uart.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
pxa.c
serial: pxa: fine-tune clk useage
2013-01-25 08:52:23 -08:00
rp2.c
serial: rp2: New driver for Comtrol RocketPort 2 cards
2013-01-17 17:28:39 -08:00
sa1100.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
samsung.c
ARM SoC late changes
2013-07-02 14:42:51 -07:00
samsung.h
tty: serial/samsung: fix modular build
2013-04-11 13:14:37 -07:00
sb1250-duart.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
sc26xx.c
serial: use platform_{get,set}_drvdata()
2013-06-03 10:21:33 -07:00
sccnxp.c
serial: sccnxp: Replace pdata.init/exit with regulator API
2013-04-15 11:04:07 -07:00
serial_core.c
serial: Move "uart_console" def to core header file.
2013-05-20 11:47:21 -07:00
serial_ks8695.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
serial_txx9.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
serial-tegra.c
treewide: Fix typo in printk
2013-05-28 12:02:13 +02:00
sh-sci.c
serial: sh-sci: Initialise variables before access in sci_set_termios()
2013-06-26 17:41:16 +09:00
sh-sci.h
serial: sh-sci: remove obsolete Kconfig macros
2013-03-25 14:06:45 -07:00
sirfsoc_uart.c
tty/serial/sirf: fix error propagation in sirfsoc_uart_probe()
2013-06-06 13:07:05 -07:00
sirfsoc_uart.h
serial: sirf: only use lookup table to set baudrate when ioclk=150MHz
2013-01-17 17:18:55 -08:00
sn_console.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
suncore.c
tty: sparc: rename drivers/tty/serial/suncore.h -> include/linux/sunserialcore.h
2012-02-10 10:44:35 -08:00
sunhv.c
serial: use platform_{get,set}_drvdata()
2013-06-03 10:21:33 -07:00
sunsab.c
serial: use platform_{get,set}_drvdata()
2013-06-03 10:21:33 -07:00
sunsab.h
…
sunsu.c
serial: use platform_{get,set}_drvdata()
2013-06-03 10:21:33 -07:00
sunzilog.c
serial: use platform_{get,set}_drvdata()
2013-06-03 10:21:33 -07:00
sunzilog.h
…
timbuart.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
timbuart.h
…
uartlite.c
tty: serial: uartlite: Support uartlite on big and little endian systems
2013-02-13 08:38:45 -08:00
ucc_uart.c
driver: tty: add missing unregister in err case
2013-06-03 10:30:43 -07:00
vr41xx_siu.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
vt8500_serial.c
serial: vt8500: Remove redundant use of of_match_ptr macro
2013-06-03 10:21:33 -07:00
xilinx_uartps.c
ARM SoC specific changes
2013-07-02 13:43:38 -07:00
zs.c
TTY: switch tty_flip_buffer_push
2013-01-15 22:30:15 -08:00
zs.h
…