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d92aca3a76
linux/drivers/tty/serial
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Jon Hunter d92aca3a76 serial: tegra: Correct shutdown of UARTs 
There are two issues in the shutdown path of the UARTs which are:
1. The function tegra_uart_shutdown() calls tegra_uart_flush_buffer()
   to stop DMA TX transfers. However, tegra_uart_flush_buffer() is
   called after the DMA channels have already been freed and so actually
   does nothing.
2. The function that frees the DMA channels
   (tegra_uart_dma_channel_free()), unmaps the dma buffer before
   freeing the DMA channel and does not ensure the DMA has been
   stopped.

Resolve this by fixing the code in tegra_uart_dma_channel_free() to
ensure the DMA is stopped, free the DMA channel and then unmap the DMA
buffer. Finally, remove the unnecessary call to tegra_uart_flush_buffer().

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-10 19:12:19 +02:00
..
8250 serial: 8250: do not copy port.fifosize member twice 2015-05-10 19:10:08 +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
68328serial.c tty: 68328serial.c: move assignment out of if () block 2015-05-10 19:04:16 +02:00
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
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
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
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 tty: crisv10.c: move assignment out of if () block 2015-05-10 19:04:17 +02:00
crisv10.h
digicolor-usart.c tty/serial: digicolor: remove sysrq reference 2015-02-02 10:11:25 -08:00
dz.c
dz.h
earlycon-arm-semihost.c
earlycon.c serial: earlycon: Enable earlycon without command line param 2015-03-26 17:25:27 +01:00
efm32-uart.c
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 tty: icom.c: move assignment out of if () block 2015-05-10 19:04:17 +02:00
icom.h
ifx6x60.c serial: ifx6x60: Remove superfluous casts when calling request_irq() 2015-05-06 22:27:01 +02:00
ifx6x60.h
imx.c serial: imx: Constify platform_device_id 2015-05-10 19:08:16 +02:00
ioc3_serial.c tty: ioc3_serial.c: move assignment out of if () block 2015-05-10 19:04:17 +02:00
ioc4_serial.c tty: ioc4_serial.c: move assignment out of if () block 2015-05-10 19:04:17 +02:00
ip22zilog.c
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
lantiq.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
lpc32xx_hs.c
m32r_sio_reg.h
m32r_sio.c
m32r_sio.h
Makefile tty: serial: Remove orphaned serial driver 2015-03-26 22:31:09 +01:00
max310x.c
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 ARM: meson: serial: convert iounmap to devm_iounmap 2015-05-06 22:27:02 +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 tty: mpsc.c: move assignment out of if () block 2015-05-10 19:04:17 +02:00
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
mux.c
mxs-auart.c serial: mxs: Constify platform_device_id 2015-05-10 19:08:16 +02:00
netx-serial.c
nwpserial.c
of_serial.c serial: of_serial: do not set port.type twice 2015-05-10 19:10:08 +02:00
omap-serial.c tty/serial: omap: fix !wakeirq message 2015-03-26 22:38:36 +01:00
pch_uart.c
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
sa1100.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
samsung.c serial: samsung: Constify platform_device_id 2015-05-10 19:08:16 +02:00
samsung.h serial: samsung: add DMA support for RX 2015-01-09 14:25:39 -08:00
sb1250-duart.c
sc16is7xx.c sc16is7xx: expose RTS inversion in RS-485 mode 2015-04-10 14:43:48 +02:00
sccnxp.c
serial_core.c tty: remove buf parameter from tty_name() 2015-05-06 22:26:57 +02:00
serial_ks8695.c
serial_mctrl_gpio.c serial: mctrl_gpio: Fix build warnings 2015-03-11 13:55:20 +01:00
serial_mctrl_gpio.h
serial_txx9.c
serial-tegra.c serial: tegra: Correct shutdown of UARTs 2015-05-10 19:12:19 +02:00
sh-sci.c serial: sh-sci: Remove obsolete comment about overrun detection 2015-05-10 19:06:39 +02:00
sh-sci.h serial: sh-sci: Replace hardcoded overrun bit values 2015-05-10 19:06:39 +02:00
sirfsoc_uart.c serial: sirf: use uart_port's fifosize for fifo related operation 2015-05-10 19:01:20 +02:00
sirfsoc_uart.h serial: sirf: use uart_port's fifosize for fifo related operation 2015-05-10 19:01:20 +02:00
sn_console.c
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
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
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
vt8500_serial.c
xilinx_uartps.c serial: xuartps: add __init to earlycon write method 2015-05-10 19:10:08 +02:00
zs.c
zs.h