Geert Uytterhoeven 1cf4a7efdc serial: sh-sci: Fix race condition causing garbage during shutdown ...

If DMA is enabled and used, a burst of old data may be seen on the
serial console during "poweroff" or "reboot".  uart_flush_buffer()
clears the circular buffer, but sci_port.tx_dma_len is not reset.
This leads to a circular buffer overflow, dumping (UART_XMIT_SIZE -
sci_port.tx_dma_len) bytes.

To fix this, add a .flush_buffer() callback that resets
sci_port.tx_dma_len.

Inspired by commit 31ca2c63fd ("tty/serial: atmel: fix race
condition (TX+DMA)").

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-05-18 16:19:16 +02:00

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accessibility

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acpi

Merge tag 'acpi-extra-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2017-05-10 09:35:42 -07:00

amba

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android

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ata

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

2017-05-09 10:01:15 -07:00

atm

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auxdisplay

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base

Merge tag 'pm-extra-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2017-05-10 09:12:30 -07:00

bcma

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block

Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

2017-05-10 11:33:08 -07:00

bluetooth

Bluetooth: hci_ldisc: Add protocol check to hci_uart_tx_wakeup()

2017-04-30 12:22:14 +02:00

bus

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cdrom

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char

Merge tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

2017-05-10 19:13:03 -07:00

clk

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2017-05-10 13:38:18 -07:00

clocksource

Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-05-12 10:43:25 -07:00

connector

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cpufreq

Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

2017-05-12 09:56:30 -07:00

cpuidle

Merge branches 'pm-domains', 'pm-cpuidle', 'pm-sleep' and 'powercap'

2017-05-09 23:21:46 +02:00

crypto

Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

2017-05-10 11:33:08 -07:00

dax

Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

2017-05-12 15:43:10 -07:00

dca

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devfreq

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dio

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dma

Merge tag 'dmaengine-4.12-rc1' of git://git.infradead.org/users/vkoul/slave-dma

2017-05-09 15:40:28 -07:00

dma-buf

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edac

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eisa

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extcon

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firewire

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firmware

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

2017-05-09 10:01:15 -07:00

fmc

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fpga

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fsi

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gpio

Merge tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

2017-05-10 19:13:03 -07:00

gpu

drm/i915: Make vblank evade warnings optional

2017-05-12 14:28:02 +10:00

hid

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2017-05-02 19:09:35 -07:00

hsi

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hv

Merge tag 'char-misc-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2017-05-04 19:15:35 -07:00

hwmon

hwmon: (twl4030-madc) drop driver

2017-04-30 11:45:31 -07:00

hwspinlock

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hwtracing

drivers/hwtracing/intel_th/msu.c: use set_memory.h header

2017-05-08 17:15:14 -07:00

i2c

Merge tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

2017-05-10 19:13:03 -07:00

ide

ide: don't call memcpy with the same source and destination

2017-05-08 17:36:39 -04:00

idle

x86/intel_idle: add Gemini Lake support

2017-05-01 23:17:37 +02:00

iio

Merge tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

2017-05-10 19:13:03 -07:00

infiniband

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

2017-05-12 11:44:13 -07:00

input

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

2017-05-13 10:25:05 -07:00

iommu

Merge tag 'iommu-updates-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

2017-05-09 15:15:47 -07:00

ipack

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irqchip

Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

2017-05-12 09:56:30 -07:00

isdn

Merge tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

2017-05-10 19:13:03 -07:00

leds

scripts/spelling.txt: add "memory" pattern and fix typos

2017-05-08 17:15:13 -07:00

lguest

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lightnvm

lightnvm: fix bad back free on error path

2017-05-04 07:53:04 -06:00

macintosh

Merge tag 'devicetree-for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2017-05-05 19:33:07 -07:00

mailbox

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mcb

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md

mm, vmalloc: use __GFP_HIGHMEM implicitly

2017-05-08 17:15:13 -07:00

media

Merge tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

2017-05-10 19:13:03 -07:00

memory

Merge tag 'for-linus-20170510' of git://git.infradead.org/linux-mtd

2017-05-11 10:44:22 -07:00

memstick

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message

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mfd

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misc

Merge tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

2017-05-10 19:13:03 -07:00

mmc

Merge tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

2017-05-10 19:13:03 -07:00

mtd

Merge tag 'upstream-4.12-rc1' of git://git.infradead.org/linux-ubifs

2017-05-13 10:23:12 -07:00

net

Merge tag 'powerpc-4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2017-05-12 10:04:09 -07:00

nfc

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ntb

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nubus

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nvdimm

Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

2017-05-12 15:43:10 -07:00

nvme

Merge branch 'for-linus' of git://git.kernel.dk/linux-block

2017-05-11 11:01:56 -07:00

nvmem

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

2017-05-09 10:01:15 -07:00

of

Merge tag 'powerpc-4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2017-05-12 10:04:09 -07:00

oprofile

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parisc

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parport

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pci

Merge tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

2017-05-10 19:13:03 -07:00

pcmcia

Merge tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

2017-05-10 19:13:03 -07:00

perf

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phy

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pinctrl

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2017-05-02 19:09:35 -07:00

platform

Merge tag 'char-misc-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2017-05-04 19:15:35 -07:00

pnp

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power

Merge tag 'for-v4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply

2017-05-12 12:02:21 -07:00

powercap

powercap: intel_rapl: Add support for Gemini Lake

2017-04-28 23:56:16 +02:00

pps

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ps3

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ptp

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-05-01 16:15:18 -07:00

pwm

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rapidio

Merge tag 'char-misc-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2017-05-04 19:15:35 -07:00

ras

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regulator

Merge remote-tracking branch 'regulator/topic/vctrl' into regulator-next

2017-04-30 22:17:44 +09:00

remoteproc

Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

2017-05-10 11:33:08 -07:00

reset

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

2017-05-09 10:01:15 -07:00

rpmsg

Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

2017-05-10 11:33:08 -07:00

rtc

Merge tag 'rtc-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

2017-05-10 19:37:14 -07:00

s390

Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

2017-05-10 11:33:08 -07:00

sbus

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scsi

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

2017-05-12 11:44:13 -07:00

sfi

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sh

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sn

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soc

Merge tag 'powerpc-4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2017-05-12 10:04:09 -07:00

spi

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spmi

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ssb

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staging

Merge tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

2017-05-10 19:13:03 -07:00

target

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2017-05-12 11:44:13 -07:00

tc

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tee

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

2017-05-10 11:20:09 -07:00

thermal

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux

2017-05-12 11:58:45 -07:00

thunderbolt

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tty

serial: sh-sci: Fix race condition causing garbage during shutdown

2017-05-18 16:19:16 +02:00

uio

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usb

Merge tag 'devicetree-for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2017-05-05 19:33:07 -07:00

uwb

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vfio

Merge tag 'powerpc-4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2017-05-05 11:36:44 -07:00

vhost

mm: support __GFP_REPEAT in kvmalloc_node for >32kB

2017-05-08 17:15:12 -07:00

video

Merge tag 'fbdev-v4.12' of git://github.com/bzolnier/linux

2017-05-11 11:12:26 -07:00

virt

drivers/virt/fsl_hypervisor.c: use get_user_pages_unlocked()

2017-05-08 17:15:10 -07:00

virtio

virtio: allow extra context per descriptor

2017-05-02 23:41:43 +03:00

vlynq

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vme

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w1

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watchdog

Merge tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

2017-05-10 19:13:03 -07:00

xen

Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-05-09 09:12:53 -07:00

zorro

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Kconfig

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Makefile

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

2017-05-10 11:20:09 -07:00