Andy Shevchenko 0b23a1ece9 dmaengine: idma64: improve residue estimation ... The residue calculation may provide a wrong estimation when the transfer is started. There are possible scenarios we have to separate: 1) the transfer is not started yet; residue is equal to the total length; 2) the transfer is just started (first chunk is ongoing); residue is equal to the total length without already transfered bytes; 3) the transfer is ongoing and we already sent few chunks of data; residue is equal to the total length without fully transfered chunks and already sent bytes. Mistakenly the calculation in cases 2) and 3) was done in the similar way and the result is equal to -bytes that have been transfered, i.e. quite big since size_t type can't keep negative values. Rewrite the calculation algorithm to be one pass and have a correct result. Besides above in case user asks for a status of the active DMA descriptor without pausing an ongoing transfer the residue will be estimated based on the register value, though it's still racy. Since the transfer is active the value is continuously being changed. Here we have to read two registers at a time. To minimize an error make those reads close to each other. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>		2015-09-25 07:51:16 +05:30
..
accessibility
acpi	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2015-09-11 16:13:47 -07:00
amba
android	mm: mark most vm_operations_struct const	2015-09-10 13:29:01 -07:00
ata	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2015-09-03 16:55:55 -07:00
atm
auxdisplay
base	Additional power management and ACPI material for v4.3-rc1	2015-09-11 19:11:06 -07:00
bcma
block	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2015-09-11 12:33:03 -07:00
bluetooth	Bluetooth: hci_bcm: Fix crash on suspend	2015-08-28 21:09:14 +02:00
bus	regmap: Changes for v4.3	2015-09-08 16:48:55 -07:00
cdrom
char	IPMI updates for 4.3	2015-09-08 18:19:17 -07:00
clk	ARM: SoC: late fixes and dependencies	2015-09-10 17:59:04 -07:00
clocksource	- New Device Support	2015-09-04 11:35:03 -07:00
connector
cpufreq	Additional power management and ACPI material for v4.3-rc1	2015-09-11 19:11:06 -07:00
cpuidle	Additional power management and ACPI material for v4.3-rc1	2015-09-11 19:11:06 -07:00
crypto	drivers/crypto/qat: use seq_hex_dump() to dump buffers	2015-09-10 13:29:01 -07:00
dca
devfreq
dio
dma	dmaengine: idma64: improve residue estimation	2015-09-25 07:51:16 +05:30
dma-buf
edac	edac updates for v4.3-rc1	2015-09-11 16:21:12 -07:00
eisa
extcon	regulator: Updates for v4.3	2015-08-31 15:49:19 -07:00
firewire
firmware	kexec: split kexec_load syscall from kexec core code	2015-09-10 13:29:01 -07:00
fmc
gpio	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2015-09-04 15:49:32 -07:00
gpu	media updates for v4.3-rc1	2015-09-11 16:42:39 -07:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2015-09-04 12:02:11 -07:00
hsi	mm: mark most vm_operations_struct const	2015-09-10 13:29:01 -07:00
hv
hwmon	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2015-09-11 16:13:47 -07:00
hwspinlock
hwtracing/coresight
i2c	Merge branch 'i2c/for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2015-09-08 16:16:26 -07:00
ide
idle
iio	This is the bulk of GPIO changes for the v4.3 kernel cycle:	2015-09-04 10:07:45 -07:00
infiniband	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2015-09-11 19:00:42 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2015-09-11 19:17:28 -07:00
iommu	fs/seq_file: convert int seq_vprint/seq_printf/etc... returns to void	2015-09-11 15:21:34 -07:00
ipack
irqchip	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-09-08 11:36:56 -07:00
isdn	libnvdimm for 4.3:	2015-09-08 14:35:59 -07:00
leds	- Stop using LP855X Platform Data to control regulators	2015-09-04 11:40:40 -07:00
lguest
macintosh	powerpc updates for 4.3	2015-09-03 16:41:38 -07:00
mailbox	Merge branch 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration	2015-09-05 18:11:04 -07:00
mcb
md	SCSI misc on 20150911	2015-09-11 18:15:18 -07:00
media	media updates for v4.3-rc1	2015-09-11 16:42:39 -07:00
memory	IOMMU Updates for Linux v4.3	2015-09-08 17:22:35 -07:00
memstick
message
mfd	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2015-09-04 15:49:32 -07:00
misc	Merge git://www.linux-watchdog.org/linux-watchdog	2015-09-11 15:12:59 -07:00
mmc	MMC core:	2015-09-08 16:33:16 -07:00
mtd	MTD updates #2 for 4.3-rc1:	2015-09-09 11:17:33 -07:00
net	NTB bug and documentation fixes, new device IDs, performance	2015-09-11 19:29:00 -07:00
nfc	This is the bulk of GPIO changes for the v4.3 kernel cycle:	2015-09-04 10:07:45 -07:00
ntb	NTB: Fix range check on memory window index	2015-09-07 15:27:12 -04:00
nubus
nvdimm	libnvdimm for 4.3:	2015-09-08 14:35:59 -07:00
nvmem
of	Merge branch 'i2c/for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2015-09-08 16:16:26 -07:00
oprofile
parisc	parisc: use seq_hex_dump() to dump buffers	2015-09-10 13:29:01 -07:00
parport
pci	kexec: split kexec_load syscall from kexec core code	2015-09-10 13:29:01 -07:00
pcmcia	pcmcia: soc_common: remove skt_dev_info's clk pointer	2015-09-03 16:01:03 +01:00
perf
phy	This is the bulk of GPIO changes for the v4.3 kernel cycle:	2015-09-04 10:07:45 -07:00
pinctrl	This is the bulk of pin control changes for the v4.3 development	2015-09-04 10:22:09 -07:00
platform	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2015-09-11 16:13:47 -07:00
pnp
power	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2015-09-11 16:13:47 -07:00
powercap	powercap / RAPL: disable the 2nd power limit properly	2015-08-29 01:46:40 +02:00
pps
ps3
ptp
pwm	pwm: Changes for v4.3-rc1	2015-09-09 10:55:32 -07:00
rapidio
ras
regulator	regmap: Changes for v4.3	2015-09-08 16:48:55 -07:00
remoteproc
reset	reset: ath79: Fix missing spin_lock_init	2015-09-01 14:48:40 +02:00
rpmsg
rtc	rtc: abx80x: fix RTC write bit	2015-09-05 19:37:31 +02:00
s390	drivers/s390/crypto/zcrypt_api.c: use seq_hex_dump() to dump buffers	2015-09-10 13:29:01 -07:00
sbus
scsi	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2015-09-11 19:00:42 -07:00
sfi
sh
sn
soc	ARM: SoC: late fixes and dependencies	2015-09-10 17:59:04 -07:00
spi	Merge remote-tracking branches 'spi/topic/ti-qspi', 'spi/topic/xcomm' and 'spi/topic/xlp' into spi-next	2015-08-31 14:45:45 +01:00
spmi	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-09-01 14:33:35 -07:00
ssb
staging	Additional power management and ACPI material for v4.3-rc1	2015-09-11 19:11:06 -07:00
target	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2015-09-11 19:00:42 -07:00
tc
thermal	thermal: fix intel PCH thermal driver mismerge	2015-09-11 20:06:59 -07:00
thunderbolt
tty	xen: MFN/GFN/BFN terminology changes for 4.3-rc0	2015-09-10 16:21:11 -07:00
uio
usb	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2015-09-01 18:46:42 -07:00
uwb
vfio
vhost
video	Merge branch 'akpm' (patches from Andrew)	2015-09-10 18:19:42 -07:00
virt
virtio	virtio_balloon: do not change memory amount visible via /proc/meminfo	2015-09-08 13:32:11 +03:00
vlynq
vme
w1	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2015-09-01 18:46:42 -07:00
watchdog	Merge git://www.linux-watchdog.org/linux-watchdog	2015-09-11 15:12:59 -07:00
xen	Merge branch 'akpm' (patches from Andrew)	2015-09-10 18:19:42 -07:00
zorro
Kconfig	Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm	2015-09-03 16:27:01 -07:00
Makefile	This is the bulk of pin control changes for the v4.3 development	2015-09-04 10:22:09 -07:00