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Hans de Goede a05af71f0d pwm: crc: Fix off-by-one error in the clock-divider calculations 
The CRC PWM controller has a clock-divider which divides the clock with
a value between 1-128. But as can seen from the PWM_DIV_CLK_xxx
defines, this range maps to a register value of 0-127.

So after calculating the clock-divider we must subtract 1 to get the
register value, unless the requested frequency was so high that the
calculation has already resulted in a (rounded) divider value of 0.

Note that before this fix, setting a period of PWM_MAX_PERIOD_NS which
corresponds to the max. divider value of 128 could have resulted in a
bug where the code would use 128 as divider-register value which would
have resulted in an actual divider value of 0 (and the enable bit being
set). A rounding error stopped this bug from actually happen. This
same rounding error means that after the subtraction of 1 it is impossible
to set the divider to 128. Also bump PWM_MAX_PERIOD_NS by 1 ns to allow
setting a divider of 128 (register-value 127).

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200903112337.4113-10-hdegoede@redhat.com
 		2020-09-06 15:38:02 +02:00
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accessibility treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
acpi ACPI / LPSS: Save Cherry Trail PWM ctx registers only once (at activation) 2020-09-06 15:37:58 +02:00
amba ARM: tegra: Replace zero-length array with flexible-array 2020-06-15 23:08:28 -05:00
android binder: Don't use mmput() from shrinker function. 2020-07-23 09:47:12 +02:00
ata libata-5.8-2020-06-19 2020-06-19 13:09:40 -07:00
atm atm: fix atm_dev refcnt leaks in atmtcp_remove_persistent 2020-07-30 17:35:53 -07:00
auxdisplay treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
base device property: Avoid NULL pointer dereference in device_get_next_child_node() 2020-07-23 17:04:28 +02:00
bcma
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block Char/Misc fixes for 5.8-rc6 2020-07-16 11:26:40 -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 Fix a suspend/resume regression (crash) on TI AM3/AM4 SoC's. 2020-07-25 13:27:12 -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 Linux 5.8 2020-08-11 11:58:31 +10:00
clk A couple build fixes for issues exposed this merge window and a fix for 2020-07-15 19:00:12 -07:00
clocksource Fix a suspend/resume regression (crash) on TI AM3/AM4 SoC's. 2020-07-25 13:27:12 -07:00
connector treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
counter counter: 104-quad-8: Add lock guards - filter clock prescaler 2020-06-14 14:46:52 +01:00
cpufreq cpufreq: intel_pstate: Fix active mode setting from command line 2020-07-13 17:55:57 +02:00
cpuidle cpuidle: Rearrange s2idle-specific idle state entry code 2020-06-25 13:52:53 +02:00
crypto crypto/chtls: correct net_device reference count 2020-07-20 18:28:04 -07:00
dax device-dax: add memory via add_memory_driver_managed() 2020-06-04 19:06:23 -07:00
dca
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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 Linux 5.8-rc6 2020-07-24 08:48:05 +10:00
dma-buf Linux 5.8-rc6 2020-07-24 08:48:05 +10:00
edac EDAC/amd64: Read back the scrub rate PCI register on F15h 2020-06-18 20:25:25 +02:00
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: Fix a reference count leak. 2020-07-29 13:13:50 -04:00
fpga fpga: dfl: fix bug in port reset handshake 2020-07-13 22:11:17 -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 gpio fixes for v5.8-rc3 2020-06-26 23:53:25 +02:00
gpu drm/i915: remove the extra modeset init layer 2020-09-04 13:41:43 +03:00
greybus treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid into master 2020-07-17 09:43:13 -07:00
hsi treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
hv Drivers: hv: Change flag to write log level in panic msg to false 2020-06-29 10:30:35 +00:00
hwmon hwmon: (drivetemp) Avoid SCT usage on Toshiba DT01ACA family drives 2020-07-18 08:11:44 -07:00
hwspinlock
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hwtracing intel_th: Fix a NULL dereference when hub driver is not loaded 2020-07-10 15:12:48 +02:00
i2c i2c: slave: add sanity check when unregistering 2020-07-28 18:37:17 +02:00
i3c
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ide treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
idle
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iio First set of IIO and counter fixes in the 5.8 cycle. 2020-07-08 09:20:50 +02:00
infiniband RDMA/core: Free DIM memory in error unwind 2020-07-30 11:03:33 -03:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2020-07-13 18:31:15 -07:00
interconnect interconnect: msm8916: Fix buswidth of pcnoc_s nodes 2020-07-23 10:45:24 +02:00
iommu iommu/qcom: Use domain rather than dev as tlb cookie 2020-07-22 17:29:28 +02:00
ipack treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
irqchip Bugfixes and a one-liner patch to silence sparse. 2020-07-06 12:48:04 -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
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md dm integrity: fix integrity recalculation that is improperly skipped 2020-07-23 14:39:37 -04:00
media media: omap3isp: remove cacheflush.h 2020-06-26 00:27:37 -07:00
memory Merge branch 'baikal/drivers' into arm/drivers 2020-05-28 14:18:11 +02:00
memstick
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message scsi: mptfusion: Don't use GFP_ATOMIC for larger DMA allocations 2020-06-26 22:51:53 -04:00
mfd irqdomain/treewide: Keep firmware node unconditionally allocated 2020-07-14 17:44:42 +02:00
misc habanalabs: prevent possible out-of-bounds array access 2020-07-19 08:15:36 +03:00
mmc mmc: sdhci-of-aspeed: Fix clock divider calculation 2020-07-13 12:17:34 +02:00
most
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mtd mtd: rawnand: xway: Fix build issue 2020-07-07 21:04:38 +02:00
mux
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net vxlan: fix memleak of fdb 2020-08-01 11:49:18 -07:00
nfc nfc: s3fwrn5: add missing release on skb in s3fwrn5_recv_frame 2020-07-20 18:31:33 -07:00
ntb NTB: perf: Fix race condition when run with ntb_test 2020-06-05 20:02:09 -04:00
nubus
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nvdimm libnvdimm/security: Fix key lookup permissions 2020-07-08 17:08:01 -07:00
nvme nvme: add a Identify Namespace Identification Descriptor list quirk 2020-07-29 08:05:44 +02:00
nvmem nvmem: qfprom: remove incorrect write support 2020-05-27 11:09:26 +02:00
of Linux 5.8-rc6 2020-07-24 08:48:05 +10:00
opp opp: Increase parsed_static_opps in _of_add_opp_table_v1() 2020-07-16 08:50:54 +05:30
oprofile oprofile: Replace zero-length array with flexible-array 2020-06-15 23:08:32 -05:00
parisc
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parport treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
pci pci-v5.8-fixes-3 2020-07-30 12:01:42 -07:00
pcmcia treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
perf drivers/perf: Prevent forced unbinding of PMU drivers 2020-07-17 10:51:44 +01:00
phy phy: fixes for 5.8 2020-07-08 18:00:07 +02:00
pinctrl A single patch to the Qualcomm driver fixing missing dual 2020-08-01 10:11:42 -07:00
platform platform/x86: asus-wmi: allow BAT1 battery name 2020-07-15 12:47:04 +03:00
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 drivers/ps3: Remove duplicate error messages 2020-05-19 00:10:35 +10:00
ptp treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
pwm pwm: crc: Fix off-by-one error in the clock-divider calculations 2020-09-06 15:38:02 +02:00
rapidio rapidio: Replace zero-length array with flexible-array 2020-06-15 23:08:32 -05:00
ras
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regulator regulator: rename da903x to da903x-regulator 2020-06-25 15:29:21 +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 vfio-ccw: Fix a build error due to missing include of linux/slab.h 2020-07-03 11:41:31 +02:00
sbus treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
scsi scsi: core: Run queue in case of I/O resource contention failure 2020-07-20 21:38:20 -04:00
sfi treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
sh
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siox
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slimbus
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soc i.MX fixes for 5.8, round 2: 2020-07-16 22:08:07 +02:00
soundwire soundwire: intel: fix memory leak with devm_kasprintf 2020-06-22 17:15:20 +05:30
spi spi: Fixes for v5.8 2020-07-17 10:24:09 -07:00
spmi
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ssb
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staging Staging driver fixes for 5.8-rc7 2020-07-26 09:14:59 -07:00
target Kbuild updates for v5.8 (2nd) 2020-06-13 13:29:16 -07:00
tc
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tee mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
thermal - Fix invalid index array access on int340x_thermal leading to a 2020-07-16 11:08:54 -07:00
thunderbolt thunderbolt: Fix path indices used in USB3 tunnel discovery 2020-06-25 15:45:30 +03:00
tty serial: exar: Fix GPIO configuration for Sealevel cards based on XR17V35X 2020-07-24 10:58:14 +02:00
uio uio_pdrv_genirq: fix use without device tree and no interrupt 2020-07-03 10:52:02 +02:00
usb usb: tegra: Fix allocation for the FPCI context 2020-07-23 13:21:01 +02:00
vdpa vdpa: fix typos in the comments for __vdpa_alloc_device() 2020-06-22 12:34:21 -04:00
vfio vfio/pci: fix racy on error and request eventfd ctx 2020-07-17 08:28:40 -06:00
vhost vhost/scsi: fix up req type endian-ness 2020-07-29 13:24:30 -04:00
video Linux 5.8 2020-08-11 11:58:31 +10:00
virt virt: vbox: Fix guest capabilities mask check 2020-07-10 13:40:19 +02:00
virtio virtio-mem: Fix build error due to improper use 'select' 2020-07-30 11:28:17 -04:00
visorbus treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
vlynq
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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 xen: branch for v5.8-rc5 2020-07-11 11:16:46 -07:00
zorro treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Kconfig
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Makefile
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