Ira Snyder 6c15d7afbb carma-fpga: fix race between data dumping and DMA callback ... When the system is under heavy load, we occasionally saw a problem where the system would get a legitimate interrupt when they should be disabled. This was caused by the data_dma_cb() DMA callback unconditionally re-enabling FPGA interrupts even when data dumping is disabled. When data dumping was re-enabled, the irq handler would fire while a DMA was in progress. The "BUG_ON(priv->inflight != NULL);" during the second invocation of the DMA callback caused the system to crash. To fix the issue, the priv->enabled boolean is moved under the protection of the priv->lock spinlock. The DMA callback checks the boolean to know whether to re-enable FPGA interrupts before it returns. Now that it is fixed, the driver keeps FPGA interrupts disabled when it expects that they are disabled, fixing the bug. Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>		2012-02-27 11:33:59 +11:00
..
accessibility	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
acpi	ACPI: remove duplicated lines of merging problems with acpi_processor_add	2012-02-08 15:07:03 -08:00
amba	Merge branch 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm	2012-01-08 13:10:57 -08:00
ata	pata/at91: use newly introduced SMC accessors	2012-02-13 18:31:37 +01:00
atm	drivers/atm/solos-pci.c: exchange pci_iounmaps	2012-02-19 18:57:51 -05:00
auxdisplay	…
base	Fixes a bootstrapping issue for some registers when a less commonly used	2012-02-18 15:37:25 -08:00
bcma	bcma: don't fail for bad SPROM CRC	2012-02-06 14:37:52 -05:00
block	asm-generic: architecture independent readq/writeq for 32bit environment	2012-02-21 16:47:28 -08:00
bluetooth	Bluetooth: btusb: Add vendor specific ID (0a5c 21f3) for BCM20702A0	2012-02-15 13:09:26 +02:00
cdrom	cdrom: move shared static to cdrom_device_info	2012-02-08 20:03:14 +01:00
char	agp: fix scratch page cleanup	2012-01-26 18:36:48 +00:00
clk	…
clocksource	Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm	2012-01-06 18:15:25 -08:00
connector	…
cpufreq	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq	2012-01-11 18:53:33 -08:00
cpuidle	cpuidle: Default y on powerpc pSeries	2012-02-22 16:48:51 +11:00
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2012-01-10 22:01:27 -08:00
dca	…
devfreq	…
dio	…
dma	i.MX SDMA: Fix burstsize settings	2012-02-02 14:00:43 +05:30
edac	asm-generic: architecture independent readq/writeq for 32bit environment	2012-02-21 16:47:28 -08:00
eisa	…
firewire	firewire: ohci: disable MSI on Ricoh controllers	2012-01-30 21:33:34 +01:00
firmware	Merge commit '070680218379e15c1901f4bf21b98e3cbf12b527' into stable/for-linus-fixes-3.3	2012-01-12 11:53:55 -05:00
gpio	gpio: Add missing spin_lock_init in gpio-ml-ioh driver	2012-02-01 21:59:37 -07:00
gpu	drm/radeon/kms/atom: dpms bios scratch reg updates	2012-02-22 10:30:06 +00:00
hid	HID: wiimote: fix invalid power_supply_powers call	2012-02-07 13:40:56 +01:00
hv	Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb	2012-01-09 12:09:47 -08:00
hwmon	hwmon: (max34440) Fix resetting temperature history	2012-02-24 08:06:15 -08:00
hwspinlock	…
i2c	Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra into fixes	2012-02-13 05:40:38 +00:00
ide	ARM: at91: drop ide driver in favor of the pata one	2012-02-13 18:31:37 +01:00
idle	ACPI processor hotplug: Delay acpi_processor_start() call for hotplugged cores	2012-01-19 21:26:32 -05:00
ieee802154	…
infiniband	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-02-10 14:18:46 -08:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2012-02-04 10:57:42 -08:00
iommu	iommu/msm: Fix error handling in msm_iommu_unmap()	2012-01-30 12:53:14 +01:00
isdn	isdn: type bug in isdn_net_header()	2012-02-09 15:41:29 -05:00
leds	drivers/leds/leds-lm3530.c: fix setting pltfm->als_vmax	2012-02-08 19:03:51 -08:00
lguest	lguest: Make sure interrupt is allocated ok by lguest_setup_irq	2012-01-12 15:44:47 +10:30
macintosh	macintosh: Fix typo in mediabay.c	2012-02-27 11:33:59 +11:00
mca	…
md	Some simple md-related fixes.	2012-02-08 19:06:30 -08:00
media	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2012-02-24 12:32:51 -08:00
memstick	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
message	SCSI updates for post 3.2 merge window	2012-01-10 10:36:08 -08:00
mfd	Merge branch 'omap-fixes-warnings' of git://git.linaro.org/people/rmk/linux-arm	2012-02-13 14:16:07 -08:00
misc	carma-fpga: fix race between data dumping and DMA callback	2012-02-27 11:33:59 +11:00
mmc	mmc: dw_mmc: Fix PIO mode with support of highmem	2012-02-13 20:39:05 -05:00
mtd	- Fix a regression in 16-bit Atmel NAND flash which was introduced in 3.1	2012-02-04 07:17:47 -08:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-02-26 12:47:17 -08:00
nfc	Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core	2012-01-07 12:03:30 -08:00
nubus	…
of	2nd set of device tree changes for v3.3	2012-01-14 13:25:55 -08:00
oprofile	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-01-06 08:02:58 -08:00
parisc	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2012-01-11 18:50:26 -08:00
parport	Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1	2012-01-14 12:32:16 -08:00
pci	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2012-02-18 15:26:11 -08:00
pcmcia	pcmcia: fix socket refcount decrementing on each resume	2012-02-08 19:03:51 -08:00
pinctrl	pinctrl: restore pin naming	2012-02-01 19:35:21 +01:00
platform	asm-generic: architecture independent readq/writeq for 32bit environment	2012-02-21 16:47:28 -08:00
pnp	PNP: work around Dell 1536/1546 BIOS MMCONFIG bug that breaks USB	2012-01-06 12:11:20 -08:00
power	lp8727_charger: Add terminating entry for i2c_device_id table	2012-02-01 21:34:26 +04:00
pps	…
ps3	…
ptp	…
rapidio	…
regulator	regulator: Fix getting voltage in max8649_enable_time()	2012-02-10 11:20:55 +00:00
rtc	ARM: at91:rtc/rtc-at91sam9: ioremap register bank	2012-02-13 18:31:36 +01:00
s390	[S390] 3215 deadlock with tty_wakeup	2012-02-17 10:29:33 +01:00
sbus	…
scsi	SCSI fixes on 20120224	2012-02-24 16:08:51 -08:00
sfi	…
sh	sh: clkfwk: bugfix: use clk_reparent() for div6 clocks	2012-01-24 10:44:49 +09:00
sn	…
spi	spi-topcliff-pch: rename pch_spi_pcidev to pch_spi_pcidev_driver	2012-02-05 23:24:17 -07:00
ssb	ssb: fix cardbus slot in hostmode	2012-02-01 15:26:00 -05:00
staging	staging: pohmelfs: remove drivers/staging/pohmelfs	2012-02-08 16:19:06 -08:00
target	target: Fix unsupported WRITE_SAME sense payload	2012-02-07 06:48:58 +00:00
tc	…
telephony	…
thermal	thermal: Rename generate_netlink_event	2012-01-23 03:15:25 -05:00
tty	tty: serial: omap-serial: wakeup latency constraint is in microseconds, not milliseconds	2012-02-09 10:48:36 -08:00
uio	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2012-01-11 18:50:26 -08:00
usb	USB: Added Kamstrup VID/PIDs to cp210x serial driver.	2012-02-21 16:29:15 -08:00
uwb	Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb	2012-01-09 12:09:47 -08:00
vhost	vhost-net: add module alias (v2.1)	2012-01-13 10:12:23 -08:00
video	SuperH fixes for 3.3-rc5	2012-02-24 08:56:51 -08:00
virt	…
virtio	virtio: correct the memory barrier in virtqueue_kick_prepare()	2012-01-28 08:10:23 +10:30
vlynq	…
w1	…
watchdog	watchdog: iTCO_wdt: add Intel Lynx Point DeviceIDs	2012-01-27 10:01:16 +01:00
xen	xenbus_dev: add missing error check to watch handling	2012-02-03 16:07:05 -05:00
zorro	…
Kconfig	…
Makefile	mmc: sdhci-pci: add platform data	2012-01-11 23:58:47 -05:00