Farhan Ali 3d5e860adf vfio-ccw: Prevent quiesce function going into an infinite loop ... [ Upstream commit d1ffa760d2 ] The quiesce function calls cio_cancel_halt_clear() and if we get an -EBUSY we go into a loop where we: - wait for any interrupts - flush all I/O in the workqueue - retry cio_cancel_halt_clear During the period where we are waiting for interrupts or flushing all I/O, the channel subsystem could have completed a halt/clear action and turned off the corresponding activity control bits in the subchannel status word. This means the next time we call cio_cancel_halt_clear(), we will again start by calling cancel subchannel and so we can be stuck between calling cancel and halt forever. Rather than calling cio_cancel_halt_clear() immediately after waiting, let's try to disable the subchannel. If we succeed in disabling the subchannel then we know nothing else can happen with the device. Suggested-by: Eric Farman <farman@linux.ibm.com> Signed-off-by: Farhan Ali <alifm@linux.ibm.com> Message-Id: <4d5a4b98ab1b41ac6131b5c36de18b76c5d66898.1555449329.git.alifm@linux.ibm.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Acked-by: Halil Pasic <pasic@linux.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2019-05-31 06:47:35 -07:00
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accessibility
acpi	ACPI / property: fix handling of data_nodes in acpi_get_next_subnode()	2019-05-31 06:47:17 -07:00
amba
android	binder: fix handling of misaligned binder object	2019-05-02 09:40:31 +02:00
ata	libata: fix using DMA buffers on stack	2019-05-04 09:15:22 +02:00
atm	atm: he: fix sign-extension overflow on large shift	2019-02-27 10:08:05 +01:00
auxdisplay	auxdisplay: hd44780: Fix memory leak on ->remove()	2019-04-20 09:15:00 +02:00
base	PM / core: Propagate dev->power.wakeup_path when no callbacks	2019-05-31 06:47:28 -07:00
bcma
block	virtio-blk: limit number of hw queues by nr_cpu_ids	2019-05-10 17:53:12 +02:00
bluetooth	Bluetooth: btusb: request wake pin with NOAUTOEN	2019-05-08 07:20:51 +02:00
bus
cdrom	cdrom: Fix race condition in cdrom_sysctl_register	2019-04-05 22:31:35 +02:00
char	hwrng: omap - Set default quality	2019-05-31 06:47:34 -07:00
clk	clk: rockchip: Make rkpwm a critical clock on rk3288	2019-05-31 06:47:28 -07:00
clocksource	clocksource/drivers/oxnas: Fix OX820 compatible	2019-05-16 19:42:21 +02:00
connector
cpufreq	cpufreq: kirkwood: fix possible object reference leak	2019-05-31 06:47:29 -07:00
cpuidle	cpuidle: big.LITTLE: fix refcount leak	2019-02-12 19:46:03 +01:00
crypto	crypto: sun4i-ss - Fix invalid calculation of hash end	2019-05-31 06:47:23 -07:00
dax
dca
devfreq
dio
dma	dmaengine: tegra210-adma: use devm_clk_*() helpers	2019-05-31 06:47:33 -07:00
dma-buf
edac	x86/cpu: Sanitize FAM6_ATOM naming	2019-05-14 19:18:42 +02:00
eisa
extcon	extcon: arizona: Disable mic detect if running when driver is removed	2019-05-31 06:47:28 -07:00
firewire
firmware	efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted	2019-04-05 22:31:36 +02:00
fmc
fpga
fsi
gpio	gpio: of: Fix of_gpiochip_add() error path	2019-05-04 09:15:22 +02:00
gpu	drm: Wake up next in drm_read() chain if we are forced to putback the event	2019-05-31 06:47:35 -07:00
hid	HID: logitech-hidpp: change low battery level threshold from 31 to 30 percent	2019-05-31 06:47:31 -07:00
hsi
hv	Drivers: hv: vmbus: Remove the undesired put_cpu_ptr() in hv_synic_cleanup()	2019-05-10 17:53:08 +02:00
hwmon	hwmon: (f71805f) Use request_muxed_region for Super-IO accesses	2019-05-31 06:47:27 -07:00
hwspinlock
hwtracing	intel_th: msu: Fix single mode with IOMMU	2019-05-25 18:25:19 +02:00
i2c	i2c: i2c-stm32f7: Fix SDADEL minimum formula	2019-05-08 07:20:53 +02:00
ide
idle	x86/cpu: Sanitize FAM6_ATOM naming	2019-05-14 19:18:42 +02:00
iio	iio: common: ssp_sensors: Initialize calculated_time in ssp_common_process_data	2019-05-31 06:47:29 -07:00
infiniband	RDMA/hns: Fix bad endianess of port_pd variable	2019-05-31 06:47:31 -07:00
input	Input: elan_i2c - add hardware ID for multiple Lenovo laptops	2019-05-16 19:42:30 +02:00
iommu	iommu/tegra-smmu: Fix invalid ASID bits on Tegra30/114	2019-05-25 18:25:22 +02:00
ipack
irqchip	MIPS: perf: ath79: Fix perfcount IRQ assignment	2019-05-16 19:42:23 +02:00
isdn	mISDN: Check address length before reading address family	2019-05-16 19:42:21 +02:00
leds	leds: pwm: silently error out on EPROBE_DEFER	2019-05-16 19:42:29 +02:00
lightnvm
macintosh
mailbox	mailbox: bcm-flexrm-mailbox: Fix FlexRM ring flush timeout issue	2019-03-23 14:35:15 +01:00
mcb
md	bcache: avoid clang -Wunintialized warning	2019-05-31 06:47:23 -07:00
media	media: saa7146: avoid high stack usage with clang	2019-05-31 06:47:34 -07:00
memory	memory: tegra: Fix integer overflow on tick value calculation	2019-05-25 18:25:25 +02:00
memstick	memstick: Prevent memstick host from getting runtime suspended during card detection	2019-02-12 19:46:04 +01:00
message
mfd	mfd: mc13xxx: Fix a missing check of a register-read failure	2019-02-27 10:08:03 +01:00
misc	lkdtm: Add tests for NULL pointer dereference	2019-04-20 09:15:06 +02:00
mmc	mmc: sdhci-of-esdhc: add erratum eSDHC-A001 and A-008358 support	2019-05-31 06:47:28 -07:00
mtd	mtd: spi-nor: intel-spi: Avoid crossing 4K address boundary on read/write	2019-05-21 18:50:17 +02:00
mux
net	cxgb3/l2t: Fix undefined behaviour	2019-05-31 06:47:31 -07:00
nfc	spi: ST ST95HF NFC: declare missing of table	2019-05-16 19:42:24 +02:00
ntb
nubus
nvdimm	libnvdimm/namespace: Fix label tracking error	2019-05-31 06:47:11 -07:00
nvme	nvme-loop: init nvmet_ctrl fatal_err_work when allocate	2019-05-08 07:20:47 +02:00
nvmem
of
oprofile
parisc	parisc: Skip registering LED when running in QEMU	2019-05-25 18:25:18 +02:00
parport	parport_pc: fix find_superio io compare code, should use equal test.	2019-03-23 14:35:24 +01:00
pci	PCI: Work around Pericom PCIe-to-PCI bridge Retrain Link erratum	2019-05-25 18:25:32 +02:00
pcmcia
perf
phy	phy: sun4i-usb: Make sure to disable PHY0 passby for peripheral mode	2019-05-31 06:47:26 -07:00
pinctrl	pinctrl: samsung: fix leaked of_node references	2019-05-31 06:47:24 -07:00
platform	platform/x86: thinkpad_acpi: Disable Bluetooth for some machines	2019-05-16 19:42:19 +02:00
pnp
power	power: supply: sysfs: prevent endless uevent loop with CONFIG_POWER_SUPPLY_DEBUG	2019-05-25 18:25:35 +02:00
powercap	x86/cpu: Sanitize FAM6_ATOM naming	2019-05-14 19:18:42 +02:00
pps
ps3
ptp
pwm
rapidio
ras
regulator	regulator: act8865: Fix act8600_sudcdc_voltage_ranges setting	2019-04-05 22:31:39 +02:00
remoteproc
reset
rpmsg
rtc	rtc: xgene: fix possible race condition	2019-05-31 06:47:30 -07:00
s390	vfio-ccw: Prevent quiesce function going into an infinite loop	2019-05-31 06:47:35 -07:00
sbus
scsi	scsi: lpfc: Fix SLI3 commands being issued on SLI4 devices	2019-05-31 06:47:34 -07:00
sfi
sh
sn
soc	soc/tegra: pmc: Drop locking from tegra_powergate_is_powered()	2019-04-20 09:15:06 +02:00
spi	spi: Fix zero length xfer bug	2019-05-31 06:47:35 -07:00
spmi
ssb	ssb: Fix possible NULL pointer dereference in ssb_host_pcmcia_exit	2019-05-31 06:47:13 -07:00
staging	staging: olpc_dcon: add a missing dependency	2019-05-16 19:42:28 +02:00
target	scsi: target/iscsi: Avoid iscsit_release_commands_from_conn() deadlock	2019-03-23 14:35:20 +01:00
tc
tee
thermal	x86/cpu: Sanitize FAM6_ATOM naming	2019-05-14 19:18:42 +02:00
thunderbolt	thunderbolt: Fix to check for kmemdup failure	2019-05-31 06:47:34 -07:00
tty	tty: ipwireless: fix missing checks for ioremap	2019-05-31 06:47:32 -07:00
uio	Revert "uio: use request_threaded_irq instead"	2019-02-15 08:09:14 +01:00
usb	usb: core: Add PM runtime calls to usb_hcd_platform_shutdown	2019-05-31 06:47:33 -07:00
uwb
vfio	vfio/pci: use correct format characters	2019-05-08 07:20:49 +02:00
vhost	vhost: reject zero size iova range	2019-04-27 09:35:34 +02:00
video	fbdev: fix WARNING in __alloc_pages_nodemask bug	2019-05-31 06:47:13 -07:00
virt	drivers/virt/fsl_hypervisor.c: prevent integer overflow in ioctl	2019-05-16 19:42:35 +02:00
virtio	virtio_pci: fix a NULL pointer reference in vp_del_vqs	2019-05-10 17:53:11 +02:00
vlynq
vme
w1	w1: fix the resume command API	2019-05-31 06:47:21 -07:00
watchdog	watchdog: renesas_wdt: don't set divider while watchdog is running	2019-02-12 19:46:03 +01:00
xen	xen/pvcalls: remove set but not used variable 'intf'	2019-02-27 10:08:03 +01:00
zorro
Kconfig
Makefile