Shinya Kuribayashi 81e798b73a i2c-designware: Divide i2c_dw_xfer_msg into two functions ... We have some steps at the top of i2c_dw_xfer_msg() to set up a slave address and enable DW I2C core. And it's executed only when we don't have STATUS_WRITE_IN_PROGRESS. But we need to make sure that STATUS_WRITE_IN_PROGRESS only indicates that we have a pending i2c_msg to process. In other words, even if STATUS_WRITE_IN_PROGRESS is not set, that doesn't mean we're at initial state in the I2C transaction. Since i2c_dw_xfer_msg() will be invoked again and again during a transaction, those init steps have a possibility to be re-processed needlessly. For example, this issue easily takes place when processing a combined transaction with a certain condition (the number of tx bytes in the first i2c_msg, equals to the Tx FIFO depth). Consequently we should not use STATUS_WRITE_IN_PROGRESS to determine where we're at in an I2C transaction. It would be better to separate those initialization steps from i2c_dw_xfer_msg(). Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Acked-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Ben Dooks <ben-linux@fluff.org>		2009-12-09 00:19:11 +00:00
..
accessibility
acpi	Merge branch 'thinkpad-2.6.32' into release	2009-11-25 00:43:08 -05:00
amba
ata	Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev	2009-12-08 08:18:01 -08:00
atm
auxdisplay
base	PM / Runtime: Remove unnecessary braces in __pm_runtime_set_status()	2009-12-06 16:17:57 +01:00
block	drbd_req.c: use part_[inc|dec]_in_flight()	2009-12-03 17:40:51 +01:00
bluetooth	Merge branch 'master' of /home/davem/src/GIT/linux-2.6/	2009-12-05 15:22:26 -08:00
cdrom
char	Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6	2009-12-08 07:38:50 -08:00
clocksource
connector
cpufreq
cpuidle
crypto
dca
dio	m68k: don't export static inline functions	2009-12-06 11:18:28 +01:00
dma	Merge branches 'at91', 'ep93xx', 'etm', 'ks8695', 'nuc', 'u300' and 'u8500' into devel	2009-12-05 10:35:18 +00:00
edac	Merge branch 'perf/mce' into perf/core	2009-12-03 20:11:06 +01:00
eisa
firewire	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6	2009-12-08 08:13:10 -08:00
firmware
gpio	gpio: Langwell GPIO driver bugfixes	2009-12-01 16:32:19 -08:00
gpu	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel	2009-11-30 13:57:19 -08:00
hid
hwmon
i2c	i2c-designware: Divide i2c_dw_xfer_msg into two functions	2009-12-09 00:19:11 +00:00
ide	Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev	2009-12-08 08:18:01 -08:00
idle
ieee1394	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6	2009-12-08 08:13:10 -08:00
ieee802154	ieee802154: merge cleanup	2009-12-02 01:13:11 -08:00
infiniband	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2009-11-18 22:19:03 -08:00
input	Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6	2009-12-08 08:15:29 -08:00
isdn	Merge branch 'master' of /home/davem/src/GIT/linux-2.6/	2009-12-05 15:22:26 -08:00
leds	Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6	2009-12-08 08:15:29 -08:00
lguest
macintosh
mca
md	Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6	2009-12-08 07:38:50 -08:00
media	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6	2009-12-08 07:47:46 -08:00
memstick
message
mfd	Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6	2009-12-08 08:15:29 -08:00
misc	Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging	2009-12-08 08:12:16 -08:00
mmc	Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6	2009-12-08 08:15:29 -08:00
mtd	Merge branch 'for-2.6.33' of git://git.kernel.dk/linux-2.6-block	2009-12-08 08:19:16 -08:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6	2009-12-08 07:38:50 -08:00
nubus
of
oprofile
parisc
parport	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k	2009-12-08 08:13:35 -08:00
pci	Merge branch 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-12-05 09:49:07 -08:00
pcmcia	Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6	2009-12-08 08:15:29 -08:00
platform	Merge branch 'misc-2.6.32' into release	2009-11-25 01:01:29 -05:00
pnp
power	collie: add battery driver	2009-11-27 21:07:23 +01:00
pps
ps3
rapidio
regulator	regulator: Initialise wm831x structure pointor for ISINK driver	2009-12-02 19:37:16 +00:00
rtc	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k	2009-12-08 08:13:35 -08:00
s390	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	2009-12-08 07:55:01 -08:00
sbus
scsi	Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6	2009-12-08 07:38:50 -08:00
serial	Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm	2009-12-08 08:12:43 -08:00
sfi
sh
sn
spi	Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6	2009-12-08 08:15:29 -08:00
ssb	Merge branch 'master' of /home/davem/src/GIT/linux-2.6/	2009-12-05 15:22:26 -08:00
staging	Merge branch 'for-2.6.33' of git://git.kernel.dk/linux-2.6-block	2009-12-08 08:19:16 -08:00
tc
telephony
thermal
uio
usb	Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6	2009-12-08 08:15:29 -08:00
uwb
video	Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6	2009-12-08 08:15:29 -08:00
virtio
vlynq
w1
watchdog	Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6	2009-12-08 08:15:29 -08:00
xen
zorro	m68k: don't export static inline functions	2009-12-06 11:18:28 +01:00
Kconfig
Makefile