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Anthony Koo 575da8db31 drm/amd/display: Fix LFC multiplier changing erratically 
[Why]
1. There is a calculation that is using frame_time_in_us instead of
last_render_time_in_us to calculate whether choosing an LFC multiplier
would cause the inserted frame duration to be outside of range.

2. We do not handle unsigned integer subtraction correctly and it underflows
to a really large value, which causes some logic errors.

[How]
1. Fix logic to calculate 'within range' using last_render_time_in_us
2. Split out delta_from_mid_point_delta_in_us calculation to ensure
we don't underflow and wrap around

Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-08-10 17:26:52 -04:00
..
accessibility
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
acpi
libnvdimm for 5.8
2020-06-13 13:04:36 -07:00
amba
ARM: tegra: Replace zero-length array with flexible-array
2020-06-15 23:08:28 -05:00
android
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
ata
libata-5.8-2020-06-19
2020-06-19 13:09:40 -07:00
atm
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
auxdisplay
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
base
linux-kselftest-kunit-5.8-rc1
2020-06-09 10:04:47 -07:00
bcma
…
block
block-5.8-2020-06-19
2020-06-19 13:11:26 -07:00
bluetooth
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2020-06-03 16:27:18 -07:00
bus
Char/Misc driver patches for 5.8-rc1
2020-06-07 10:59:32 -07:00
cdrom
Merge branch 'work.sysctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2020-06-10 16:05:54 -07:00
char
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2020-06-21 10:01:03 -07:00
clk
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
clocksource
clocksource/drivers/timer-riscv: Use per-CPU timer interrupt
2020-06-09 19:11:22 -07:00
connector
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
counter
…
cpufreq
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
cpuidle
- Add the hwmon support on the i.MX SC (Anson Huang)
2020-06-12 14:10:21 -07:00
crypto
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2020-06-21 10:01:03 -07:00
dax
device-dax: add memory via add_memory_driver_managed()
2020-06-04 19:06:23 -07:00
dca
…
devfreq
PM / devfreq: Use lockdep asserts instead of manual checks for locked mutex
2020-05-28 18:02:40 +09:00
dio
maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault
2020-06-17 10:57:41 -07:00
dma
dmaengine: tegra-apb: Replace zero-length array with flexible-array
2020-06-15 23:08:32 -05:00
dma-buf
drm-misc-next for v5.9:
2020-06-30 14:04:00 +10:00
edac
Kbuild updates for v5.8 (2nd)
2020-06-13 13:29:16 -07:00
eisa
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
extcon
extcon: arizona: Fix runtime PM imbalance on error
2020-05-29 17:36:02 +09:00
firewire
firewire: ohci: Replace zero-length array with flexible-array
2020-06-15 23:08:31 -05:00
firmware
firmware: pcdp: Replace zero-length array with flexible-array
2020-06-15 23:08:32 -05:00
fpga
Char/Misc driver patches for 5.8-rc1
2020-06-07 10:59:32 -07:00
fsi
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
gnss
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
gpio
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
gpu
drm/amd/display: Fix LFC multiplier changing erratically
2020-08-10 17:26:52 -04:00
greybus
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
hid
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
hsi
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
hv
hyperv-next for 5.8
2020-06-03 15:00:05 -07:00
hwmon
Merge branch 'x86/entry' into ras/core
2020-06-11 15:17:57 +02:00
hwspinlock
…
hwtracing
stm class: Replace zero-length array with flexible-array
2020-06-15 23:08:32 -05:00
i2c
i2c: smbus: Fix spelling mistake in the comments
2020-06-19 10:09:16 +02:00
i3c
…
ide
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
idle
…
iio
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
infiniband
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
input
maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault
2020-06-17 10:57:41 -07:00
interconnect
More power management updates for 5.8-rc1
2020-06-10 14:04:39 -07:00
iommu
Kbuild updates for v5.8 (2nd)
2020-06-13 13:29:16 -07:00
ipack
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
irqchip
clocksource/drivers/timer-riscv: Use per-CPU timer interrupt
2020-06-09 19:11:22 -07:00
isdn
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
leds
LEDs pull request for 5.8-rc1.
2020-06-04 11:03:45 -07:00
lightnvm
for-5.8/block-2020-06-01
2020-06-02 15:29:19 -07:00
macintosh
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
mailbox
mailbox: qcom: Add ipq6018 apcs compatible
2020-06-10 22:43:57 -05:00
mcb
…
md
bcache: pr_info() format clean up in bcache_device_init()
2020-06-14 16:47:56 -06:00
media
media: pwc: Replace zero-length array with flexible-array
2020-06-15 23:08:32 -05:00
memory
Merge branch 'baikal/drivers' into arm/drivers
2020-05-28 14:18:11 +02:00
memstick
…
message
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
mfd
mfd: mt6360: Fix register driver NULL pointer by adding driver name
2020-06-16 09:32:43 +01:00
misc
maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault
2020-06-17 10:57:41 -07:00
mmc
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
most
…
mtd
This pull request contains a single change for UBI:
2020-06-10 13:24:40 -07:00
mux
…
net
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-16 17:44:54 -07:00
nfc
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
ntb
NTB: perf: Fix race condition when run with ntb_test
2020-06-05 20:02:09 -04:00
nubus
…
nvdimm
nvdimm/region: always show the 'align' attribute
2020-06-17 14:08:31 -07:00
nvme
Kbuild updates for v5.8 (2nd)
2020-06-13 13:29:16 -07:00
nvmem
…
of
Driver core patches for 5.8-rc1
2020-06-07 10:53:36 -07:00
opp
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
oprofile
oprofile: Replace zero-length array with flexible-array
2020-06-15 23:08:32 -05:00
parisc
…
parport
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
pci
Kbuild updates for v5.8 (2nd)
2020-06-13 13:29:16 -07:00
pcmcia
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
perf
arm64 merge window fixes for -rc1
2020-06-11 12:53:23 -07:00
phy
phy: samsung: Replace zero-length array with flexible-array
2020-06-15 23:08:32 -05:00
pinctrl
pinctrl: single: fix function name in documentation
2020-06-20 22:41:32 +02:00
platform
Kbuild updates for v5.8 (2nd)
2020-06-13 13:29:16 -07:00
pnp
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
power
power supply and reset changes for the v5.8 series
2020-06-10 11:28:35 -07:00
powercap
Kbuild updates for v5.8 (2nd)
2020-06-13 13:29:16 -07:00
pps
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
ps3
…
ptp
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
pwm
pwm: Add missing "CONFIG_" prefix
2020-06-04 19:09:28 +02:00
rapidio
rapidio: Replace zero-length array with flexible-array
2020-06-15 23:08:32 -05:00
ras
…
regulator
Merge remote-tracking branch 'regulator/for-5.8' into regulator-linus
2020-06-01 13:01:44 +01:00
remoteproc
remoteproc updates for v5.8
2020-06-08 13:01:08 -07:00
reset
Char/Misc driver patches for 5.8-rc1
2020-06-07 10:59:32 -07:00
rpmsg
remoteproc updates for v5.8
2020-06-08 13:01:08 -07:00
rtc
RTC for 5.8
2020-06-07 16:11:23 -07:00
s390
s390/qdio: warn about unexpected SLSB states
2020-06-17 23:05:05 +02:00
sbus
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
scsi
scsi: Wire up ata_scsi_dma_need_drain for SAS HBA drivers
2020-06-15 23:40:43 -04:00
sfi
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
sh
…
siox
…
slimbus
…
soc
soc: ti: Replace zero-length array with flexible-array
2020-06-15 23:08:32 -05:00
soundwire
…
spi
Char/Misc driver patches for 5.8-rc1
2020-06-07 10:59:32 -07:00
spmi
…
ssb
…
staging
Kbuild updates for v5.8 (2nd)
2020-06-13 13:29:16 -07:00
target
Kbuild updates for v5.8 (2nd)
2020-06-13 13:29:16 -07:00
tc
…
tee
mmap locking API: use coccinelle to convert mmap_sem rwsem call sites
2020-06-09 09:39:14 -07:00
thermal
- Add the hwmon support on the i.MX SC (Anson Huang)
2020-06-12 14:10:21 -07:00
thunderbolt
USB/PHY driver updates for 5.8-rc1
2020-06-07 09:42:16 -07:00
tty
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
uio
…
usb
Kbuild updates for v5.8 (2nd)
2020-06-13 13:29:16 -07:00
vdpa
ifcvf: implement config interrupt in IFCVF
2020-06-06 16:26:47 -04:00
vfio
kernel: better document the use_mm/unuse_mm API contract
2020-06-10 19:14:18 -07:00
vhost
Kbuild updates for v5.8 (2nd)
2020-06-13 13:29:16 -07:00
video
drm-misc-next for v5.9:
2020-06-24 15:45:51 +10:00
virt
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
virtio
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
visorbus
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
vlynq
…
vme
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
w1
w1: Replace zero-length array with flexible-array
2020-06-15 23:08:32 -05:00
watchdog
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
xen
The X86 entry, exception and interrupt code rework
2020-06-13 10:05:47 -07:00
zorro
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
Kconfig
…
Makefile
…