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Dirk Behme 42f752b3fb serial: imx: use dma_is_txing to synchronize dma_tx_callback and imx_dma_tx 
To synchronize between dma_tx_callback() and imx_dma_tx() use the same
variable, dma_is_txing. This prevents any race between these two functions
and ensures that a new DMA can start only after the first has been
finished.

Before the new DMA can be set up, update the circular buffer logic, first.
Therefore, change dma_is_txing after that update, instead of before.

While doing this, in dma_tx_callback() extend the locking to dma_unmap_sg()
and the update of dma_is_txing.

Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-09 14:23:07 -08:00
..
accessibility
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acpi
Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-12-19 14:02:02 -08:00
amba
Char/Misc driver patches for 3.19-rc1
2014-12-14 16:43:47 -08:00
android
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ata
More ACPI and power management updates for 3.19-rc1
2014-12-18 20:28:33 -08:00
atm
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
auxdisplay
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base
More ACPI and power management updates for 3.19-rc1
2014-12-18 20:28:33 -08:00
bcma
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
2014-12-11 17:56:37 -08:00
block
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
2014-12-17 16:03:12 -08:00
bluetooth
Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
2014-12-15 13:23:09 -05:00
bus
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
cdrom
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char
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
2014-12-25 16:04:15 -08:00
clk
Please consider pulling the clk framework changes toward 3.19. It is
2014-12-20 16:42:36 -08:00
clocksource
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
2014-12-11 17:56:37 -08:00
connector
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coresight
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cpufreq
Update/Remove soon-to-be-dead email address
2014-12-19 12:56:15 -08:00
cpuidle
powerpc updates for 3.19 batch 2
2014-12-19 12:57:45 -08:00
crypto
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
dca
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devfreq
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dio
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dma
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
dma-buf
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edac
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
eisa
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extcon
Char/Misc driver patches for 3.19-rc1
2014-12-14 16:43:47 -08:00
firewire
firewire: sbp2: replace card lock by target lock
2014-12-10 20:53:21 +01:00
firmware
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
fmc
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gpio
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
gpu
Revert "drm/gem: Warn on illegal use of the dumb buffer interface v2"
2014-12-24 13:13:22 +10:00
hid
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
2014-12-12 10:26:47 -08:00
hsi
* misc. fixes in omap-ssi and nokia-modem drivers
2014-12-15 17:33:47 -08:00
hv
Char/Misc driver patches for 3.19-rc1
2014-12-14 16:43:47 -08:00
hwmon
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
2014-12-17 10:16:27 -08:00
hwspinlock
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i2c
Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2014-12-20 13:52:52 -08:00
ide
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
idle
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iio
Staging patches for 3.19-rc1
2014-12-15 18:06:13 -08:00
infiniband
SCSI for-linus on 20141220
2014-12-20 13:42:57 -08:00
input
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2014-12-17 10:06:02 -08:00
iommu
Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-12-19 14:02:02 -08:00
ipack
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irqchip
Merge branch 'irq-irqdomain-arm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-12-15 17:30:09 -08:00
isdn
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2014-12-12 10:08:06 -08:00
leds
More ACPI and power management updates for 3.19-rc1
2014-12-18 20:28:33 -08:00
lguest
virtio: allow finalize_features to fail
2014-12-09 16:32:32 +02:00
macintosh
macintosh: therm_pm72: delete deprecated driver
2014-12-19 19:32:47 +01:00
mailbox
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
mcb
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md
dm: fix missed error code if .end_io isn't implemented by target_type
2014-12-17 12:31:13 -05:00
media
More ACPI and power management updates for 3.19-rc1
2014-12-18 20:28:33 -08:00
memory
MTD updates for 3.19:
2014-12-17 09:59:26 -08:00
memstick
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message
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mfd
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
misc
powerpc updates for 3.19 batch 2
2014-12-19 12:57:45 -08:00
mmc
More ACPI and power management updates for 3.19-rc1
2014-12-18 20:28:33 -08:00
mtd
MTD updates for 3.19:
2014-12-17 09:59:26 -08:00
net
Main batch of InfiniBand/RDMA changes for 3.19:
2014-12-18 20:10:44 -08:00
nfc
More ACPI and power management updates for 3.19-rc1
2014-12-18 20:28:33 -08:00
ntb
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nubus
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of
ARM: SoC/iommu configuration for 3.19
2014-12-16 14:53:01 -08:00
oprofile
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parisc
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parport
Char/Misc driver patches for 3.19-rc1
2014-12-14 16:43:47 -08:00
pci
Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-12-19 14:02:02 -08:00
pcmcia
Char/Misc driver patches for 3.19-rc1
2014-12-14 16:43:47 -08:00
phy
More ACPI and power management updates for 3.19-rc1
2014-12-18 20:28:33 -08:00
pinctrl
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
platform
platform-drivers-x86 for 3.19
2014-12-18 20:24:55 -08:00
pnp
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power
More ACPI and power management updates for 3.19-rc1
2014-12-18 20:28:33 -08:00
powercap
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pps
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ps3
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ptp
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pwm
pwm: Changes for v3.19-rc1
2014-12-17 10:10:51 -08:00
rapidio
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ras
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regulator
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
remoteproc
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
reset
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
rpmsg
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rtc
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
s390
Driver core patches for 3.19-rc1
2014-12-14 16:10:09 -08:00
sbus
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scsi
SCSI for-linus on 20141220
2014-12-20 13:42:57 -08:00
sfi
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sh
drivers: sh / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
2014-12-05 03:08:24 +01:00
sn
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soc
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
2014-12-15 15:52:01 -08:00
spi
spi: Replace CONFIG_PM_RUNTIME with CONFIG_PM
2014-12-19 15:25:31 +01:00
spmi
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ssb
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
2014-12-11 17:56:37 -08:00
staging
[regression] braino in "lustre: use is_root_inode()"
2014-12-26 22:43:19 -05:00
target
SCSI for-linus on 20141220
2014-12-20 13:42:57 -08:00
tc
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thermal
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-12-19 13:29:20 -08:00
thunderbolt
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tty
serial: imx: use dma_is_txing to synchronize dma_tx_callback and imx_dma_tx
2015-01-09 14:23:07 -08:00
uio
Char/Misc driver patches for 3.19-rc1
2014-12-14 16:43:47 -08:00
usb
SCSI for-linus on 20141220
2014-12-20 13:42:57 -08:00
uwb
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vfio
VFIO updates for v3.19-rc1
2014-12-17 10:44:22 -08:00
vhost
vhost/virtio: virtio 1.0 related fixes
2014-12-18 20:50:30 -08:00
video
More ACPI and power management updates for 3.19-rc1
2014-12-18 20:28:33 -08:00
virt
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virtio
vhost/virtio: virtio 1.0 related fixes
2014-12-18 20:50:30 -08:00
vlynq
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vme
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w1
Char/Misc driver patches for 3.19-rc1
2014-12-14 16:43:47 -08:00
watchdog
watchdog: imx2_wdt: Fix the argument of watchdog_active()
2014-12-18 16:01:20 +01:00
xen
Merge remote-tracking branch 'scsi-queue/drivers-for-3.19' into for-linus
2014-12-18 05:56:29 -08:00
zorro
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Kconfig
Staging patches for 3.19-rc1
2014-12-15 18:06:13 -08:00
Makefile
Staging patches for 3.19-rc1
2014-12-15 18:06:13 -08:00