Huang Shijie eb56b7edae serial: imx: implement the flush_buffer hook ...

The current driver does not implement the flush_buffer hook for
uart_ops. When we enable the DMA for the driver, and test it with Bluetooth,
we may meet the following bug for TX:

    [1] User application may call the flush operation at any time.
        The uart_flush_buffer() calls the uart_circ_clear() to set
        the xmit->head and xmit->tail with 0.

    [2] The TX DMA callback can be called at any time too.
        The dma_tx_call() will update the xmit->tail.

    If [2] occurs just after the [1], we will get the wrong xmit->tail.

This patch implements the flush_buffer hook to fix this issue.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2013-10-16 13:19:54 -07:00

..

8250

serial8250-em: convert to clk_prepare/unprepare

2013-10-16 13:07:14 -07:00

cpm_uart

tty: serial: cpm_uart: Adding proper request of GPIO used by cpm_uart driver

2013-08-27 22:06:22 -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

Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2013-09-06 13:26:27 -07:00

altera_uart.c

Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2013-09-06 13:26:27 -07:00

amba-pl010.c

serial: Remove unnecessary amba_set_drvdata()

2013-10-03 16:09:47 -07:00

amba-pl011.c

serial: Remove unnecessary amba_set_drvdata()

2013-10-03 16:09:47 -07:00

apbuart.c

tty: serial: apbuart: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:33 -07:00

apbuart.h

…

ar933x_uart.c

tty: ar933x_uart: add device tree support and binding documentation

2013-08-30 14:11:27 -07:00

arc_uart.c

serial: arc_uart: Remove casting the return value which is a void pointer

2013-09-26 14:29:58 -07:00

atmel_serial.c

serial: use dev_get_platdata()

2013-07-31 17:56:15 -07:00

bcm63xx_uart.c

tty: serial: bcm63xx: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:34 -07:00

bfin_sport_uart.c

serial: bfin_sport_uart: Remove casting the return value which is a void pointer

2013-09-26 14:29:58 -07:00

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: Remove unnecessary semicolons

2013-10-16 13:08:16 -07:00

clps711x.c

serial: clps711x: drop needless devm_clk_put

2013-09-26 15:44:46 -07:00

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

tty: serial: efm32: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:34 -07:00

fsl_lpuart.c

serial: fsl_lpuart: Return proper error on lpuart_serial_init error path

2013-07-26 16:01:20 -07:00

icom.c

serial: icom: move array overflow checks earlier

2013-08-27 16:24:33 -07:00

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: implement the flush_buffer hook

2013-10-16 13:19:54 -07:00

ioc3_serial.c

TTY: switch tty_flip_buffer_push

2013-01-15 22:30:15 -08:00

ioc4_serial.c

serial: ioc4_serial: Staticize ioc4_serial_attach_one()

2013-08-12 11:35:32 -07:00

ip22zilog.c

tty: Remove unnecessary semicolons

2013-10-16 13:08:16 -07:00

ip22zilog.h

…

Kconfig

tty: serial: Restrict ST ASC driver to only build on !ARM when COMPILE_TEST is set.

2013-09-26 14:25:26 -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

treewide: Convert retrun typos to return

2013-09-04 12:26:36 +02:00

lantiq.c

serial: MIPS: lantiq: fix clock error check

2013-08-12 11:37:48 -07:00

lpc32xx_hs.c

tty: serial: lpc32xx_hs: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:34 -07:00

m32r_sio_reg.h

m32r: relocate drivers back out of 8250 dir

2012-02-08 15:04:32 -08:00

m32r_sio.c

tty: serial: m32r_sio: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:34 -07:00

m32r_sio.h

TTY: serial, include pci.h in m32r_sio

2012-03-08 11:47:02 -08:00

Makefile

Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

2013-09-06 11:14:33 -07:00

max310x.c

tty: Remove unnecessary semicolons

2013-10-16 13:08:16 -07:00

max3100.c

serial: use dev_get_platdata()

2013-07-31 17:56:15 -07:00

mcf.c

tty: serial: mcf: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:34 -07:00

mfd.c

serial: mfd: remove unnecessary pci_set_drvdata()

2013-09-26 15:41:38 -07:00

mpc52xx_uart.c

serial: mpc52xx: remove reference to .set_wake()

2013-10-16 13:16:19 -07:00

mpsc.c

serial: mpsc: Remove casting the return value which is a void pointer

2013-09-26 14:29:58 -07:00

mrst_max3110.c

serial: mrst_max3110: Fix race condition between spi transfers

2013-10-16 13:08:16 -07:00

mrst_max3110.h

max3110: add sysrq support

2011-08-26 11:01:15 -07:00

msm_serial_hs.c

serial: use dev_get_platdata()

2013-07-31 17:56:15 -07:00

msm_serial.c

msm_serial: Send more than 1 character on the console w/ UARTDM

2013-08-27 16:22:59 -07:00

msm_serial.h

msm_serial: Make baud_code detection more dynamic

2013-07-26 16:13:29 -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: set the FIFO size to DMA buffer size

2013-10-05 18:03:01 -07:00

netx-serial.c

tty: serial: netx: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:34 -07:00

nwpserial.c

tty: serial: nwpserial: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:35 -07:00

of_serial.c

serial: use platform_{get,set}_drvdata()

2013-06-03 10:21:33 -07:00

omap-serial.c

serial: omap: delete .set_wake callback

2013-10-16 13:16:18 -07:00

pch_uart.c

serial: pch_uart: remove reference to .set_wake()

2013-10-16 13:16:19 -07:00

pmac_zilog.c

tty: Remove unnecessary semicolons

2013-10-16 13:08:16 -07:00

pmac_zilog.h

tty/serial/pmac_zilog: Fix suspend & resume

2011-12-16 11:10:01 +11:00

pnx8xxx_uart.c

tty: serial: pnx8xxx: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:35 -07:00

pxa.c

serial: pxa: Staticize local symbols

2013-08-12 11:10:16 -07:00

rp2.c

tty: serial: rp2: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:35 -07:00

sa1100.c

serial: sa1100: delete .set_wake callback

2013-10-16 13:16:18 -07:00

samsung.c

serial: samsung: add support for manual RTS setting

2013-09-26 15:41:38 -07:00

samsung.h

serial: samsung: Remove casting the return value which is a void pointer

2013-09-26 14:29:59 -07:00

sb1250-duart.c

TTY: switch tty_flip_buffer_push

2013-01-15 22:30:15 -08:00

sc26xx.c

serial: use dev_get_platdata()

2013-07-31 17:56:15 -07:00

sccnxp.c

serial: sccnxp: missing uart_unregister_driver() on error in sccnxp_probe()

2013-09-26 15:44:45 -07:00

serial_core.c

serial: report base_baud after initialization

2013-07-26 16:03:05 -07:00

serial_ks8695.c

TTY: switch tty_flip_buffer_push

2013-01-15 22:30:15 -08:00

serial_txx9.c

serial: txx9: remove unnecessary pci_set_drvdata()

2013-09-26 15:41:38 -07:00

serial-tegra.c

serial: tegra: remove deprecated IRQF_DISABLED

2013-10-07 00:13:58 -07:00

sh-sci.c

serial: sh-sci: use dev_get_platdata()

2013-08-02 11:54:13 +08:00

sh-sci.h

serial: sh-sci: remove obsolete Kconfig macros

2013-03-25 14:06:45 -07:00

sirfsoc_uart.c

serial: sirf: don't submit dma desc after timeout irqs occur

2013-09-26 15:41:39 -07:00

sirfsoc_uart.h

serial: sirf: fix the amount of serial ports

2013-08-27 16:25:44 -07:00

sn_console.c

TTY: switch tty_flip_buffer_push

2013-01-15 22:30:15 -08:00

st-asc.c

serial: st-asc: remove unnecessary platform_set_drvdata()

2013-08-27 16:24:33 -07:00

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

tty: Remove unnecessary semicolons

2013-10-16 13:08:16 -07:00

sunsab.h

…

sunsu.c

tty: Remove unnecessary semicolons

2013-10-16 13:08:16 -07:00

sunzilog.c

tty: Remove unnecessary semicolons

2013-10-16 13:08:16 -07:00

sunzilog.h

…

tilegx.c

tilegx: Add tty serial support for TILE-Gx on-chip UART

2013-09-03 14:50:40 -04:00

timbuart.c

serial: timbuart: Staticize local symbols

2013-08-12 11:35:31 -07:00

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

tty: Remove unnecessary semicolons

2013-10-16 13:08:16 -07:00

vr41xx_siu.c

serial: use dev_get_platdata()

2013-07-31 17:56:15 -07:00

vt8500_serial.c

tty: serial: vt8500: drop uart_port->lock before calling tty_flip_buffer_push()

2013-08-27 16:17:35 -07:00

xilinx_uartps.c

Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

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

…