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4bba0fd8d1
linux/drivers
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Jon Povey 4bba0fd8d1 i2c-davinci: Fix race when setting up for TX 
When setting up to transmit, a race exists between the ISR and
i2c_davinci_xfer_msg() trying to load the first byte and adjust counters.
This is mostly visible for transmits > 1 byte long.

The hardware starts sending immediately that MDR is loaded. IMR trickery
doesn't work because if we start sending, finish the first byte and an
XRDY event occurs before we load IMR to unmask it, we never get an
interrupt, and we timeout.

Move the MDR load after DXR,IMR loads to avoid this race without locking.

Tested on DM355 connected to Techwell TW2836 and Wolfson WM8985

Signed-off-by: Jon Povey <jon.povey@racelogic.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-09-28 00:05:08 +01:00
..
accessibility
acpi Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2010-09-07 16:00:17 -07:00
amba
ata libata-sff: Reenable Port Multiplier after libata-sff remodeling. 2010-09-09 22:31:55 -04:00
atm Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6 2010-08-12 09:11:31 -07:00
auxdisplay
base PM: Prevent waiting forever on asynchronous resume after failing suspend 2010-09-09 00:49:43 +02:00
block Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 2010-09-10 07:26:27 -07:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 2010-08-06 12:25:06 -07:00
cdrom block: push down BKL into .open and .release 2010-08-07 18:25:34 +02:00
char Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2010-09-08 11:19:18 -07:00
clocksource
connector
cpufreq
cpuidle cpuidle: extend cpuidle and menu governor to handle dynamic states 2010-08-09 20:45:04 -07:00
crypto [S390] zcrypt: fix Kconfig dependencies 2010-08-13 10:06:54 +02:00
dca dca: disable dca on IOAT ver.3.0 multiple-IOH platforms 2010-09-17 20:08:21 -07:00
dio
dma Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6 2010-08-12 09:11:31 -07:00
edac amd64_edac: Do not report error overflow as a separate error 2010-08-26 12:46:03 +02:00
eisa
firewire firewire: ohci: activate cycle timer register quirk on Ricoh chips 2010-09-08 21:25:55 +02:00
firmware Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2010-08-14 12:34:34 -07:00
gpio gpio: sx150x: correct and refine reset-on-probe behavior 2010-09-09 18:57:24 -07:00
gpu drm/radeon/kms: only warn on mipmap size checks in r600 cs checker (v2) 2010-09-15 11:13:09 +10:00
hid HID: fix hiddev's use of usb_find_interface 2010-09-14 10:58:42 +02:00
hwmon hwmon: (lm95241) Replace rate sysfs attribute with update_interval 2010-09-17 17:24:15 +02:00
i2c i2c-davinci: Fix race when setting up for TX 2010-09-28 00:05:08 +01:00
ide Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6 2010-09-19 11:06:34 -07:00
idle Merge branch 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6 2010-08-15 11:17:52 -07:00
ieee1394 ieee1394: Adjust confusing if indentation 2010-08-05 23:26:30 +02:00
ieee802154
infiniband Merge branches 'cxgb3' and 'nes' into for-linus 2010-09-08 14:43:28 -07:00
input Input: i8042 - fix device removal on unload 2010-08-31 18:28:15 -07:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2010-08-23 18:30:30 -07:00
leds Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6 2010-08-12 09:11:31 -07:00
lguest
macintosh via-pmu: Add compat_pmu_ioctl 2010-08-24 15:28:28 +10:00
mca
md md: fix v1.x metadata update when a disk is missing. 2010-09-17 13:53:28 +10:00
media V4L/DVB: mantis: Fix IR_CORE dependency 2010-08-24 10:42:08 -07:00
memstick memstick: fix hangs on unexpected device removal in mspro_blk 2010-08-12 08:43:31 -07:00
message fusion: add function parameter names to kernel-doc 2010-08-14 16:21:00 -07:00
mfd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6 2010-08-12 10:01:30 -07:00
misc Merge branch 'params' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus 2010-08-12 10:01:59 -07:00
mmc drivers/mmc/host/imxmmc.c: adjust confusing if indentation 2010-09-09 18:57:23 -07:00
mtd Merge git://git.infradead.org/mtd-2.6 2010-09-14 17:05:39 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2010-09-19 11:05:50 -07:00
nubus
of of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
oprofile oprofile: fix crash when accessing freed task structs 2010-08-25 09:09:09 +02:00
parisc
parport Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6 2010-08-12 09:11:31 -07:00
pci Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2010-09-07 16:00:17 -07:00
pcmcia pcmcia: per-device, not per-socket debug messages 2010-09-15 17:57:09 +02:00
platform intel_scu_ipc: fix IPC i2c write bug 2010-08-24 10:42:09 -07:00
pnp
power apm_power: Add missing break statement 2010-09-08 14:35:10 +04:00
pps
ps3
rapidio
regulator regulator: wm8350-regulator - fix the logic of checking REGULATOR_MODE_STANDBY mode 2010-09-06 11:14:47 +01:00
rtc drivers/rtc/rtc-pl031.c: do not mark PL031 IRQ as shared 2010-09-09 18:57:24 -07:00
s390 Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 2010-09-10 07:26:27 -07:00
sbus of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
scsi [SCSI] fix use-after-free in scsi_init_io() 2010-09-09 09:58:18 -05:00
serial Merge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 2010-09-16 12:56:12 -07:00
sfi
sh
sn
spi spi/pl022: move probe call to subsys_initcall() 2010-09-08 22:50:10 -06:00
ssb Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 2010-08-06 12:25:06 -07:00
staging Staging: wlan-ng: Explicitly set some fields in cfg80211 interface 2010-09-03 17:37:16 -07:00
tc
telephony
thermal
uio uio: Remove IRQF_DISABLED flag from uio_cif.c 2010-08-05 13:53:33 -07:00
usb USB: ftdi_sio: Added custom PIDs for ChamSys products 2010-09-03 17:33:41 -07:00
uwb
vhost vhost: error handling fix 2010-09-06 09:49:39 +03:00
video Merge branch '2.6.36-fixes' of git://github.com/schandinat/linux-2.6 2010-09-16 12:56:48 -07:00
virtio
vlynq
w1
watchdog watchdog: Enable NXP LPC32XX support in Kconfig (resend) 2010-09-15 18:43:58 +00:00
xen Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2010-08-28 13:55:31 -07:00
zorro zorro: Fix reading of proc/bus/zorro/* in small chunks 2010-08-09 21:14:08 +02:00
Kconfig
Makefile Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2010-09-17 10:23:08 -07:00