Eduardo Otubo 49f1a164d4 xen-netfront: remove warning when unloading module ... [ Upstream commit 5b5971df3bc2775107ddad164018a8a8db633b81 ] v2: * Replace busy wait with wait_event()/wake_up_all() * Cannot garantee that at the time xennet_remove is called, the xen_netback state will not be XenbusStateClosed, so added a condition for that * There's a small chance for the xen_netback state is XenbusStateUnknown by the time the xen_netfront switches to Closed, so added a condition for that. When unloading module xen_netfront from guest, dmesg would output warning messages like below: [ 105.236836] xen:grant_table: WARNING: g.e. 0x903 still in use! [ 105.236839] deferring g.e. 0x903 (pfn 0x35805) This problem relies on netfront and netback being out of sync. By the time netfront revokes the g.e.'s netback didn't have enough time to free all of them, hence displaying the warnings on dmesg. The trick here is to make netfront to wait until netback frees all the g.e.'s and only then continue to cleanup for the module removal, and this is done by manipulating both device states. Signed-off-by: Eduardo Otubo <otubo@redhat.com> Acked-by: Juergen Gross <jgross@suse.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-02-03 17:04:28 +01:00
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accessibility
acpi	ACPI / bus: Leave modalias empty for devices which are not present	2018-02-03 17:04:27 +01:00
amba
android	ANDROID: binder: fix proc->tsk check.	2017-08-30 10:19:26 +02:00
ata	libata: apply MAX_SEC_1024 to all LITEON EP1 series devices	2018-01-23 19:50:16 +01:00
atm	atm: horizon: Fix irq release error	2017-12-16 10:33:55 +01:00
auxdisplay
base	drivers: base: cacheinfo: fix boot error message when acpi is enabled	2018-01-31 12:06:08 +01:00
bcma	bcma: use (get|put)_device when probing/removing device driver	2017-03-12 06:37:30 +01:00
block	loop: fix concurrent lo_open/lo_release	2018-02-03 17:04:24 +01:00
bluetooth	Revert "Bluetooth: btusb: driver to enable the usb-wakeup feature"	2017-12-25 14:22:15 +01:00
bus	sunxi-rsb: Include OF based modalias in device uevent	2018-01-10 09:27:09 +01:00
cdrom
char	hwrng: core - sleep interruptible in read	2018-01-17 09:35:28 +01:00
clk	clk: tegra: Fix cclk_lp divisor register	2017-12-20 10:04:59 +01:00
clocksource	clockevents/drivers/cs5535: Improve resilience to spurious interrupts	2017-10-27 10:23:17 +02:00
connector
cpufreq	cpufreq: Add Loongson machine dependencies	2018-02-03 17:04:27 +01:00
cpuidle	cpuidle: fix broadcast control when broadcast can not be entered	2017-12-25 14:22:15 +01:00
crypto	crypto: n2 - cure use after free	2018-01-10 09:27:08 +01:00
dca
devfreq
dio
dma	dmaengine: ti-dma-crossbar: Correct am335x/am43xx mux value type	2017-12-20 10:04:58 +01:00
dma-buf
edac	EDAC, i5000, i5400: Fix definition of NRECMEMB register	2017-12-16 10:33:54 +01:00
eisa
extcon	extcon: palmas: Check the parent instance to prevent the NULL	2017-11-21 09:21:18 +01:00
firewire	firewire: net: fix fragmented datagram_size off-by-one	2016-11-10 16:36:35 +01:00
firmware	efi/esrt: Cleanup bad memory map log messages	2017-12-20 10:04:56 +01:00
fmc
fpga
gpio	gpio: ath79: add missing MODULE_DESCRIPTION/LICENSE	2018-02-03 17:04:26 +01:00
gpu	drm/amdkfd: Fix SDMA oversubsription handling	2018-02-03 17:04:27 +01:00
hid	HID: xinmo: fix for out of range for THT 2P arcade controller.	2017-12-25 14:22:12 +01:00
hsi
hv	x86/retpoline/hyperv: Convert assembler indirect jumps	2018-01-23 19:50:13 +01:00
hwmon	hwmon: (asus_atk0110) fix uninitialized data access	2017-12-25 14:22:12 +01:00
hwspinlock
hwtracing	intel_th: pci: Add Gemini Lake support	2017-12-20 10:04:54 +01:00
i2c	i2c: riic: fix restart condition	2017-12-16 10:33:53 +01:00
ide
idle	intel_idle: Support for Intel Xeon Phi Processor x200 Product Family	2016-09-15 08:27:46 +02:00
iio	iio: light: fix improper return value	2017-11-30 08:37:27 +00:00
infiniband	IB/srpt: Disable RDMA access by the initiator	2018-01-17 09:35:24 +01:00
input	Input: trackpoint - force 3 buttons if 0 button is reported	2018-01-31 12:06:11 +01:00
iommu	iommu/arm-smmu-v3: Don't free page table ops twice	2018-01-17 09:35:25 +01:00
ipack
irqchip	irqchip/crossbar: Fix incorrect type of register size	2017-12-16 10:33:52 +01:00
isdn	isdn: kcapi: avoid uninitialized data	2017-12-25 14:22:13 +01:00
leds	leds: ktd2692: avoid harmless maybe-uninitialized warning	2017-05-14 13:32:55 +02:00
lguest
lightnvm	lightnvm: put bio before return	2016-09-24 10:07:35 +02:00
macintosh
mailbox	mailbox: handle empty message in tx_tick	2017-08-06 19:19:41 -07:00
mcb	mcb: Fixed bar number assignment for the gdd	2016-06-01 12:15:53 -07:00
md	bcache: check return value of register_shrinker	2018-02-03 17:04:27 +01:00
media	usbvision fix overflow of interfaces array	2018-01-17 09:35:27 +01:00
memory	ARM: OMAP2+: gpmc-onenand: propagate error on initialization failure	2017-12-16 10:33:51 +01:00
memstick	memstick: rtsx_usb_ms: Manage runtime PM when accessing the device	2016-10-28 03:01:35 -04:00
message
mfd	mfd: twl6040: Fix child-node lookup	2018-01-02 20:33:20 +01:00
misc	cxl: Check if vphb exists before iterating over AFU devices	2017-12-25 14:22:08 +01:00
mmc	mmc: sdhci-of-esdhc: add/remove some quirks according to vendor version	2018-01-31 12:06:09 +01:00
mtd	mtd: nand: denali_pci: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE	2018-02-03 17:04:26 +01:00
net	xen-netfront: remove warning when unloading module	2018-02-03 17:04:28 +01:00
nfc	nfc: fdp: fix NULL pointer dereference	2017-08-06 19:19:40 -07:00
ntb	ntb_transport: fix bug calculating num_qps_mw	2017-08-30 10:19:29 +02:00
nubus
nvdimm	libnvdimm, namespace: make 'resource' attribute only readable by root	2017-11-30 08:37:23 +00:00
nvme	nvme: Fix memory order on async queue deletion	2017-11-24 08:32:25 +01:00
nvmem	nvmem: imx-ocotp: Fix wrong register size	2017-08-06 19:19:46 -07:00
of	of: device: Export of_device_{get_modalias, uvent_modalias} to modules	2017-07-27 15:06:09 -07:00
oprofile
parisc	parisc: Hide Diva-built-in serial aux and graphics card	2018-01-02 20:33:20 +01:00
parport	parisc, parport_gsc: Fixes for printk continuation lines	2017-06-17 06:39:37 +02:00
pci	PCI: layerscape: Fix MSG TLP drop setting	2018-01-31 12:06:08 +01:00
pcmcia
perf	drivers/perf: arm_pmu: Fix leak in error path	2016-10-07 15:23:41 +02:00
phy	phy: work around 'phys' references to usb-nop-xceiv devices	2018-01-23 19:50:16 +01:00
pinctrl	pinctrl: st: add irq_request/release_resources callbacks	2017-12-25 14:22:11 +01:00
platform	platform/x86: hp-wmi: Do not shadow error values	2017-11-15 17:13:11 +01:00
pnp	PNP: Add Broadwell to Intel MCH size workaround	2016-08-16 09:30:48 +02:00
power	power: reset: zx-reboot: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE	2018-02-03 17:04:25 +01:00
powercap
pps	pps: do not crash when failed to register	2016-08-10 11:49:25 +02:00
ps3
ptp
pwm	pwm: pca9685: Fix period change with same duty cycle	2017-03-15 09:57:14 +08:00
rapidio
ras
regulator	regulator: fan53555: fix I2C device ids	2017-11-02 09:40:50 +01:00
remoteproc	remoteproc: Fix potential race condition in rproc_add	2016-08-20 18:09:20 +02:00
reset
rpmsg
rtc	rtc: set the alarm to the next expiring timer	2017-12-25 14:22:15 +01:00
s390	s390/qeth: no ETH header for outbound AF_IUCV	2017-12-25 14:22:12 +01:00
sbus
scsi	scsi: libiscsi: fix shifting of DID_REQUEUE host byte	2018-01-31 12:06:11 +01:00
sfi
sh
sn
soc	soc: qcom/spm: shut up uninitialized variable warning	2016-09-24 10:07:42 +02:00
spi	spi: xilinx: Detect stall with Unknown commands	2018-01-02 20:33:21 +01:00
spmi	spmi: Include OF based modalias in device uevent	2017-07-27 15:06:10 -07:00
ssb	ssb: Fix error routine when fallback SPROM fails	2017-01-09 08:07:42 +01:00
staging	staging: android: ashmem: fix a race condition in ASHMEM_SET_SIZE ioctl	2018-01-17 09:35:32 +01:00
target	target: Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK	2018-01-17 09:35:31 +01:00
tc
thermal	thermal: hisilicon: Handle return value of clk_prepare_enable	2017-12-25 14:22:15 +01:00
thunderbolt	thunderbolt: Fix double free of drom buffer	2016-06-01 12:15:53 -07:00
tty	sysrq: Fix warning in sysrq generated crash.	2018-01-17 09:35:28 +01:00
uio	uio: fix dmem_region_start computation	2016-10-31 04:13:59 -06:00
usb	usbip: prevent leaking socket pointer address in messages	2018-01-31 12:06:12 +01:00
uwb	uwb: ensure that endpoint is interrupt	2017-10-12 11:27:35 +02:00
vfio	vfio-pci: Handle error from pci_iomap	2017-08-06 19:19:46 -07:00
vhost	fix a page leak in vhost_scsi_iov_to_sgl() error recovery	2017-11-30 08:37:22 +00:00
video	backlight: pwm_bl: Fix overflow condition	2017-12-25 14:22:13 +01:00
virt
virtio	virtio: release virtio index when fail to device_register	2017-12-16 10:33:48 +01:00
vlynq
vme	vme: Fix wrong pointer utilization in ca91cx42_slave_get	2017-01-19 20:17:21 +01:00
w1	w1: ds2490: USB transfer buffers need to be DMAable	2017-03-12 06:37:29 +01:00
watchdog	watchdog: kempld: fix gcc-4.3 build	2017-10-21 17:09:04 +02:00
xen	xen: xenbus driver must not accept invalid transaction ids	2017-11-30 08:37:28 +00:00
zorro
Kconfig
Makefile	usb: Make sure usb/phy/of gets built-in	2017-05-20 14:26:59 +02:00