linux/drivers
Viresh Kumar c88c395f4a PM / OPP: Initialize u_volt_min/max to a valid value
We kept u_volt_min/max initialized to 0, when only the target voltage is
present in DT, instead of the target/min/max triplet.

This didn't go well with the regulator framework, as on few calls the
min voltage was set to target and max was set to 0 and so resulted in a
kernel crash like below:

kernel BUG at ../drivers/regulator/core.c:216!

[<c0684af4>] (regulator_check_voltage) from [<c06857ac>] (regulator_set_voltage_unlocked+0x58/0x230)
[<c06857ac>] (regulator_set_voltage_unlocked) from [<c06859ac>] (regulator_set_voltage+0x28/0x54)
[<c06859ac>] (regulator_set_voltage) from [<c0775b28>] (_set_opp_voltage+0x30/0x98)
[<c0775b28>] (_set_opp_voltage) from [<c0776630>] (dev_pm_opp_set_rate+0xf0/0x28c)
[<c0776630>] (dev_pm_opp_set_rate) from [<c096f784>] (__cpufreq_driver_target+0x184/0x2b4)
[<c096f784>] (__cpufreq_driver_target) from [<c0973760>] (dbs_check_cpu+0x1b0/0x1f4)
[<c0973760>] (dbs_check_cpu) from [<c0973f30>] (cpufreq_governor_dbs+0x324/0x5c4)
[<c0973f30>] (cpufreq_governor_dbs) from [<c0970958>] (__cpufreq_governor+0xe4/0x1ec)
[<c0970958>] (__cpufreq_governor) from [<c09711e0>] (cpufreq_init_policy+0x64/0x8c)
[<c09711e0>] (cpufreq_init_policy) from [<c09718cc>] (cpufreq_online+0x2fc/0x708)
[<c09718cc>] (cpufreq_online) from [<c0765ff0>] (subsys_interface_register+0x94/0xd8)
[<c0765ff0>] (subsys_interface_register) from [<c0970530>] (cpufreq_register_driver+0x14c/0x19c)
[<c0970530>] (cpufreq_register_driver) from [<c09746dc>] (dt_cpufreq_probe+0x70/0xec)
[<c09746dc>] (dt_cpufreq_probe) from [<c076907c>] (platform_drv_probe+0x4c/0xb0)
[<c076907c>] (platform_drv_probe) from [<c07678e0>] (driver_probe_device+0x214/0x2c0)
[<c07678e0>] (driver_probe_device) from [<c0767a18>] (__driver_attach+0x8c/0x90)
[<c0767a18>] (__driver_attach) from [<c0765c2c>] (bus_for_each_dev+0x68/0x9c)
[<c0765c2c>] (bus_for_each_dev) from [<c0766d78>] (bus_add_driver+0x1a0/0x218)
[<c0766d78>] (bus_add_driver) from [<c076810c>] (driver_register+0x78/0xf8)
[<c076810c>] (driver_register) from [<c0301d74>] (do_one_initcall+0x90/0x1d8)
[<c0301d74>] (do_one_initcall) from [<c1100e14>] (kernel_init_freeable+0x15c/0x1fc)
[<c1100e14>] (kernel_init_freeable) from [<c0b27a0c>] (kernel_init+0x8/0xf0)
[<c0b27a0c>] (kernel_init) from [<c0307d78>] (ret_from_fork+0x14/0x3c)
Code: e1550004 baffffeb e3a00000 e8bd8070 (e7f001f2)

Fix that by initializing u_volt_min/max to the target voltage in such cases.

Reported-and-tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Fixes: 274659029c (PM / OPP: Add support to parse "operating-points-v2" bindings)
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-02-15 22:55:35 +01:00
..
accessibility
acpi Merge branches 'pm-core' and 'pm-domains' 2016-02-06 00:34:01 +01:00
amba
android
ata
atm
auxdisplay
base PM / OPP: Initialize u_volt_min/max to a valid value 2016-02-15 22:55:35 +01:00
bcma
block Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2016-01-24 12:34:13 -08:00
bluetooth
bus vexpress fixes for v4.5 2016-02-01 12:27:18 -08:00
cdrom
char Fix a compile error on IPMI when ACPI is disabled. 2016-02-03 10:04:58 -08:00
clk ARM: DT updates for v4.5 2016-01-20 18:16:29 -08:00
clocksource Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-01-31 15:49:06 -08:00
connector
cpufreq Merge branches 'pm-cpuidle', 'pm-cpufreq', 'pm-domains' and 'pm-sleep' 2016-01-29 21:45:17 +01:00
cpuidle Merge branches 'pm-cpuidle', 'pm-cpufreq', 'pm-domains' and 'pm-sleep' 2016-01-29 21:45:17 +01:00
crypto crypto: atmel-aes - remove calls of clk_prepare() from atomic contexts 2016-01-30 22:05:17 +08:00
dca
devfreq
dio
dma dmaengine fixes for 4.5-rc1 2016-01-20 10:15:21 -08:00
dma-buf
edac
eisa
extcon
firewire
firmware UBSAN: run-time undefined behavior sanity checker 2016-01-20 17:09:18 -08:00
fmc
fpga
gpio ARM: SoC multiplatform code changes for v4.5 2016-01-20 18:03:56 -08:00
gpu Merge branch 'drm-fixes-mst' of git://people.freedesktop.org/~airlied/linux into drm-fixes 2016-02-05 15:24:17 +10:00
hid asm-generic changes for 4.5 2016-01-20 17:30:20 -08:00
hsi
hv
hwmon hwmon: (fam15h_power) Add bit masking for tdp_limit 2016-01-27 18:48:46 -08:00
hwspinlock drivers/hwspinlock: fix race between radix tree insertion and lookup 2016-02-03 08:28:43 -08:00
hwtracing
i2c i2c: piix4: don't regress on bus names 2016-01-29 11:13:52 +01:00
ide
idle
iio Second set of IIO fixes for the 4.5 cycle. These ones are mostly 2016-02-01 13:08:26 -08:00
infiniband IB/core: Set correct payload length for RoCEv2 over IPv6 2016-02-02 16:42:22 -05:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2016-01-22 17:20:30 -08:00
iommu iommu/amd: Correct the wrong setting of alias DTE in do_attach 2016-01-29 12:30:47 +01:00
ipack
irqchip Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-01-31 14:48:58 -08:00
isdn
leds
lguest
lightnvm
macintosh
mailbox mailbox: Fix dependencies for !HAS_IOMEM archs 2016-02-02 16:47:14 +05:30
mcb
md Merge branch 'mymd/for-next' into mymd/for-linus 2016-02-03 15:43:59 -08:00
media [media] saa7134-alsa: Only frees registered sound cards 2016-02-04 16:26:10 -02:00
memory ARM: SoC driver updates for v4.5 2016-01-20 18:42:30 -08:00
memstick memstick: use sector_div instead of do_div 2016-01-20 17:09:18 -08:00
message
mfd
misc Merge branch 'akpm' (patches from Andrew) 2016-01-21 12:32:08 -08:00
mmc MMC core: 2016-01-22 12:04:21 -08:00
mtd Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-01-24 12:50:56 -08:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-02-01 15:56:08 -08:00
nfc
ntb NTB: Fix macro parameter conflict with field name 2016-01-21 19:53:10 -05:00
nubus
nvdimm libnvdimm, pfn: fix restoring memmap location 2016-01-29 17:43:16 -08:00
nvme Merge branch 'for-4.5/nvme' of git://git.kernel.dk/linux-block 2016-01-21 19:58:02 -08:00
nvmem
of Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-02-01 15:56:08 -08:00
oprofile wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
parisc parisc: convert to dma_map_ops 2016-01-20 17:09:18 -08:00
parport
pci Merge branches 'acpi-video' and 'acpi-hotplug' 2016-01-29 21:44:53 +01:00
pcmcia
perf
phy
pinctrl
platform ideapad-laptop: Add Lenovo Yoga 700 to no_hw_rfkill dmi list 2016-01-24 10:15:01 -08:00
pnp PNP: Add Haswell-ULT to Intel MCH size workaround 2016-02-03 01:00:29 +01:00
power
powercap
pps
ps3
ptp ptp: ixp46x: use helpers for converting ns to timespec 2016-01-29 12:38:59 -08:00
pwm pwm: Mark all devices as "might sleep" 2016-01-21 15:04:59 +01:00
rapidio rapidio: use kobj_to_dev() 2016-01-20 17:09:18 -08:00
ras
regulator
remoteproc
reset
rpmsg
rtc RTC for 4.5 2016-01-18 12:10:45 -08:00
s390 s390/cio: update measurement characteristics 2016-01-26 12:47:51 +01:00
sbus
scsi drivers/scsi/sg.c: mark VMA as VM_IO to prevent migration 2016-02-03 08:28:43 -08:00
sfi
sh
sn
soc ARM: SoC support for Tegra platforms for v4.5 2016-01-22 17:30:52 -08:00
spi
spmi
ssb ssb: mark ssb_bus_register as __maybe_unused 2016-01-19 21:25:57 +02:00
staging Staging / IIO driver fixes for 4.5-rc3 2016-02-06 22:13:16 -08:00
target Merge branch 'for-4.5/nvme' of git://git.kernel.dk/linux-block 2016-01-21 19:58:02 -08:00
tc
thermal Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2016-01-24 12:43:06 -08:00
thunderbolt
tty TTY/Serial fixes for 4.5-rc2 2016-01-31 17:09:39 -08:00
uio
usb xhci: harden xhci_find_next_ext_cap against device removal 2016-02-04 17:00:10 -08:00
uwb
vfio vfio/noiommu: Don't use iommu_present() to track fake groups 2016-01-27 11:22:25 -07:00
vhost
video wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
virt
virtio virtio_pci: fix use after free on release 2016-01-26 10:18:28 +02:00
vlynq
vme
w1
watchdog watchdog: Fix dependencies for !HAS_IOMEM archs 2016-01-31 16:54:36 +01:00
xen Merge branch 'stable/for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/mm 2016-01-29 15:13:48 -08:00
zorro
Kconfig
Makefile