Thierry Reding ef793e6e11 rtc: tegra: Implement clock handling ... commit 5fa4086987 upstream. Accessing the registers of the RTC block on Tegra requires the module clock to be enabled. This only works because the RTC module clock will be enabled by default during early boot. However, because the clock is unused, the CCF will disable it at late_init time. This causes the RTC to become unusable afterwards. This can easily be reproduced by trying to use the RTC: $ hwclock --rtc /dev/rtc1 This will hang the system. I ran into this by following up on a report by Martin Michlmayr that reboot wasn't working on Tegra210 systems. It turns out that the rtc-tegra driver's ->shutdown() implementation will hang the CPU, because of the disabled clock, before the system can be rebooted. What confused me for a while is that the same driver is used on prior Tegra generations where the hang can not be observed. However, as Peter De Schrijver pointed out, this is because on 32-bit Tegra chips the RTC clock is enabled by the tegra20_timer.c clocksource driver, which uses the RTC to provide a persistent clock. This code is never enabled on 64-bit Tegra because the persistent clock infrastructure does not exist on 64-bit ARM. The proper fix for this is to add proper clock handling to the RTC driver in order to ensure that the clock is enabled when the driver requires it. All device trees contain the clock already, therefore no additional changes are required. Reported-by: Martin Michlmayr <tbm@cyrius.com> Acked-By Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> [bwh: Backported to 4.9: adjust context] Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2017-04-21 09:31:24 +02:00
..
accessibility
acpi	ACPI / EC: Use busy polling mode when GPE is not enabled	2017-04-21 09:31:24 +02:00
amba
android	ANDROID: binder: Clear binder and cookie when setting handle in flat binder struct	2016-10-24 19:37:48 +02:00
ata	sata: ahci-da850: implement a workaround for the softreset quirk	2017-04-12 12:41:20 +02:00
atm	atm: fix improper return value	2016-12-05 14:53:46 -05:00
auxdisplay	auxdisplay: img-ascii-lcd: add missing sentinel entry in img_ascii_lcd_matches	2017-03-30 09:41:27 +02:00
base	base/memory, hotplug: fix a kernel oops in show_valid_zones()	2017-02-09 08:08:28 +01:00
bcma	bcma: use (get|put)_device when probing/removing device driver	2017-03-12 06:41:52 +01:00
block	nbd: fix 64-bit division	2017-04-21 09:31:23 +02:00
bluetooth	Bluetooth: Add another AR3012 04ca:3018 device	2017-03-15 10:02:40 +08:00
bus	bus: vexpress-config: fix device reference leak	2017-01-19 20:18:07 +01:00
cdrom
char	char: lack of bool string made CONFIG_DEVPORT always on	2017-04-21 09:31:22 +02:00
clk	clk: lpc32xx: add a quirk for PWM and MS clock dividers	2017-04-12 12:41:15 +02:00
clocksource	clocksource/drivers/arm_arch_timer: Don't assume clock runs in suspend	2017-04-12 12:41:16 +02:00
connector
cpufreq	cpufreq: Bring CPUs up even if cpufreq_online() failed	2017-04-21 09:31:22 +02:00
cpuidle	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2016-10-15 09:26:12 -07:00
crypto	crypto: caam - fix invalid dereference in caam_rsa_init_tfm()	2017-04-18 07:11:49 +02:00
dax	device-dax: fix pmd/pte fault fallback handling	2017-03-30 09:41:27 +02:00
dca
devfreq	PM / devfreq: Fix wrong trans_stat of passive devfreq device	2017-03-12 06:41:44 +01:00
dio
dma	dmaengine: iota: ioat_alloc_chan_resources should not perform sleeping allocations.	2017-03-22 12:43:35 +01:00
dma-buf	dma-buf: add support for compat ioctl	2017-04-18 07:11:50 +02:00
edac
eisa
extcon	extcon: return error code on failure	2017-01-19 20:18:03 +01:00
firewire	firewire: net: fix fragmented datagram_size off-by-one	2016-11-03 14:46:39 +01:00
firmware	efi/libstub: Skip GOP with PIXEL_BLT_ONLY format	2017-04-21 09:31:20 +02:00
fmc
fpga
gpio	ACPI / gpio: do not fall back to parsing _CRS when we get a deferral	2017-04-12 12:41:12 +02:00
gpu	drm/nouveau/disp/mcp7x: disable dptmds workaround	2017-04-21 09:31:23 +02:00
hid	HID: wacom: don't apply generic settings to old devices	2017-04-12 12:41:21 +02:00
hsi
hv	Drivers: hv: vmbus: Don't leak memory when a channel is rescinded	2017-03-30 09:41:27 +02:00
hwmon	hwmon: (it87) Ensure that pwm control cache is current before updating values	2017-03-12 06:41:42 +01:00
hwspinlock
hwtracing	intel_th: Don't leak module refcount on failure to activate	2017-03-30 09:41:27 +02:00
i2c	i2c: bcm2835: Fix hang for writing messages larger than 16 bytes	2017-04-18 07:11:47 +02:00
ide
idle	x86/intel_idle: Add CPU model 0x4a (Atom Z34xx series)	2017-04-12 12:41:17 +02:00
iio	iio: bmg160: reset chip when probing	2017-04-12 12:41:11 +02:00
infiniband	IB/mlx5: Verify that Q counters are supported	2017-03-18 19:14:35 +08:00
input	Input: xpad - add support for Razer Wildcat gamepad	2017-04-21 09:31:19 +02:00
iommu	iommu/vt-d: Fix NULL pointer dereference in device_to_iommu	2017-03-30 09:41:26 +02:00
ipack	ipack: print a hex number after a 0x prefix	2016-10-27 18:43:43 -07:00
irqchip	irqchip/irq-imx-gpcv2: Fix spinlock initialization	2017-04-21 09:31:22 +02:00
isdn	isdn/gigaset: fix NULL-deref at probe	2017-03-26 13:05:58 +02:00
leds
lguest
lightnvm
macintosh
mailbox	mailbox: PCC: Fix lockdep warning when request PCC channel	2016-11-14 22:07:38 +01:00
mcb
md	dm raid: fix NULL pointer dereference for raid1 without bitmap	2017-04-12 12:41:13 +02:00
media	dvb-usb-v2: avoid use-after-free	2017-04-21 09:31:23 +02:00
memory	memory/atmel-ebi: Fix ns <-> cycles conversions	2017-03-15 10:02:45 +08:00
memstick	memstick: rtsx_usb_ms: Manage runtime PM when accessing the device	2016-10-17 15:43:05 +02:00
message
mfd	mfd: tps65217: Fix page fault on unloading modules	2017-01-12 11:39:23 +01:00
misc	cxl: fix nested locking hang during EEH hotplug	2017-03-15 10:02:42 +08:00
mmc	mmc: sdhci-of-esdhc: remove default broken-cd for ARM	2017-04-12 12:41:22 +02:00
mtd	mtd: bcm47xxpart: fix parsing first block after aligned TRX	2017-04-18 07:11:47 +02:00
net	ath9k: fix NULL pointer dereference	2017-04-21 09:31:23 +02:00
nfc	mei: bus: fix received data size check in NFC fixup	2016-10-31 10:25:22 -06:00
ntb	ntb_transport: Pick an unused queue	2017-02-23 17:44:36 +01:00
nubus
nvdimm	libnvdimm: fix reconfig_mutex, mmap_sem, and jbd2_handle lockdep splat	2017-04-21 09:31:21 +02:00
nvme	nvme: simplify stripe quirk	2017-04-12 12:41:18 +02:00
nvmem
of	of, numa: Return NUMA_NO_NODE from disable of_node_to_nid() if nid not possible.	2017-01-09 08:32:25 +01:00
oprofile
parisc
parport	parport: fix attempt to write duplicate procfiles	2017-03-30 09:41:25 +02:00
pci	PCI: Add ACS quirk for Qualcomm QDF2400 and QDF2432	2017-04-12 12:41:22 +02:00
pcmcia	pcmcia: fix return value of soc_pcmcia_regulator_set	2016-11-11 08:45:08 -08:00
perf	perf: xgene: Remove bogus IS_ERR() check	2016-10-17 15:50:07 +01:00
phy	phy: twl4030-usb: Fix for musb session bit based PM	2016-11-17 16:25:40 +01:00
pinctrl	pinctrl: qcom: Don't clear status bit on irq_unmask	2017-03-31 10:31:45 +02:00
platform	platform/x86: acer-wmi: setup accelerometer when machine has appropriate notify event	2017-04-21 09:31:24 +02:00
pnp
power	power: reset: at91-poweroff: timely shutdown LPDDR memories	2017-03-12 06:41:45 +01:00
powercap	powercap/intel_rapl: fix and tidy up error handling	2017-01-19 20:18:07 +01:00
pps
ps3
ptp	drivers/ptp: Fix kernel memory disclosure	2016-10-13 10:20:06 -04:00
pwm	pwm: rockchip: State of PWM clock should synchronize with PWM enabled state	2017-04-21 09:31:22 +02:00
rapidio	mm: replace get_user_pages() write/force parameters with gup_flags	2016-10-19 08:11:43 -07:00
ras
regulator	regulator: Fix regulator_summary for deviceless consumers	2017-03-12 06:41:43 +01:00
remoteproc	remoteproc: qcom: mdt_loader: Don't overwrite firmware object	2017-03-12 06:41:50 +01:00
reset	reset: uniphier: rename MIO reset to SD reset for Pro5, PXs2, LD20 SoCs	2016-10-22 18:31:42 +09:00
rpmsg	rpmsg: virtio_rpmsg_bus: fix channel creation	2017-01-26 08:24:44 +01:00
rtc	rtc: tegra: Implement clock handling	2017-04-21 09:31:24 +02:00
s390	s390/zcrypt: Introduce CEX6 toleration	2017-03-22 12:43:38 +01:00
sbus
scsi	scsi: sd: Fix capacity calculation with 32-bit sector_t	2017-04-21 09:31:21 +02:00
sfi
sh
sn
soc	soc: ti: wkup_m3_ipc: Fix error return code in wkup_m3_ipc_probe()	2017-01-26 08:24:45 +01:00
spi	spi: s3c64xx: fix inconsistency between binding and driver	2017-03-12 06:41:41 +01:00
spmi
ssb	ssb: Fix error routine when fallback SPROM fails	2017-01-09 08:32:16 +01:00
staging	staging: android: ashmem: lseek failed due to no FMODE_LSEEK.	2017-04-12 12:41:11 +02:00
target	target: Avoid mappedlun symlink creation during lun shutdown	2017-04-21 09:31:21 +02:00
tc
thermal	thermal: hwmon: Properly report critical temperature in sysfs	2017-01-09 08:32:18 +01:00
thunderbolt
tty	serial: 8250_omap: Add OMAP_DMA_TX_KICK quirk for AM437x	2017-04-12 12:41:19 +02:00
uio
usb	usb: hub: Wait for connection to be reestablished after port reset	2017-04-18 07:11:50 +02:00
uwb	uwb: hwa-rc: fix NULL-deref at probe	2017-03-30 09:41:24 +02:00
vfio	vfio/spapr: Postpone default window creation	2017-03-22 12:43:38 +01:00
vhost	vhost: fix initialization for vq->is_le	2017-02-09 08:08:28 +01:00
video	xen, fbfront: fix connecting to backend	2017-04-21 09:31:21 +02:00
virt	mm: replace get_user_pages() write/force parameters with gup_flags	2016-10-19 08:11:43 -07:00
virtio	virtio_balloon: init 1st buffer in stats vq	2017-03-31 10:31:45 +02:00
vlynq
vme	VME: restore bus_remove function causing incomplete module unload	2017-03-12 06:41:50 +01:00
w1	w1: ds2490: USB transfer buffers need to be DMAable	2017-03-12 06:41:48 +01:00
watchdog	watchdog: s3c2410: Fix infinite interrupt in soft mode	2017-04-12 12:41:22 +02:00
xen	xen/acpi: upload PM state from init-domain to Xen	2017-03-30 09:41:26 +02:00
zorro
Kconfig
Makefile	A small bug fix and a new driver for acting as an IPMI device.	2016-10-23 15:56:23 -07:00