OpenCloudOS-Kernel/drivers
Doug Anderson 5ae0c7ad06 pinctrl: rockchip: Only mask interrupts; never disable
The Rockchip GPIO interrupt controller totally throws away all status
about an interrupt when you "disable" the interrupt.  That has
unfortunate consequences in the following situation:

1. An edge-triggered interrupt is enabled and should wake the system.
2. System suspend happens: interrupt is disabled and marked for wake.
3. rockchip_irq_suspend() reenables the interrupt so we can wake.
4. Interrupt happens when asleep.
5. rockchip_irq_resume() redisables the interrupt.
6. Disabling the interrupt throws away all status about it.
7. Normal system resume happens and we enable the interrupt again,
   since we threw away status about the interrupt we don't know it
   fired while suspended.  Even worse: if we need both edges of the
   interrupt the logic to swap edges never runs.

Note: even if we somehow can post the status about wakeup interrupts
in rockchip_irq_resume() we would still have a window of losing any
edges that came in while interrupts were disabled.

If we use mask only then we don't need to worry.  The GPIO Interrupt
controller keeps track of pending interrupts that are enabled and just
masked.

There was no real strong reason to support the enable/disable
functionality (other than that it seemed right), so let's go back to
just supporting mask/unmask but actually map it to the real
mask/unmask.  This ends up with slightly different (and more correct)
behavior than before (f2dd028 pinctrl: rockchip: Fix
enable/disable/mask/unmask).

Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-01-30 10:38:36 +01:00
..
accessibility
acpi ACPI: pci: Do not clear pci_dev->irq in acpi_pci_irq_disable() 2015-01-20 11:44:40 +01:00
amba Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
android
ata libata: prevent HSM state change race between ISR and PIO 2015-01-19 14:11:23 -05:00
atm Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
auxdisplay
base Merge branches 'pm-domains', 'powercap' and 'pm-tools' 2014-12-29 21:24:00 +01:00
bcma Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-12-11 17:56:37 -08:00
block NVMe: cq_vector should be signed 2015-01-15 15:19:10 -07:00
bluetooth Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next 2014-12-15 13:23:09 -05:00
bus mvebu fixes for 3.19. (Part 4) 2015-01-23 14:08:13 -08:00
cdrom
char ipmi: Fix compile warning with tv_usec 2014-12-30 13:34:36 -06:00
clk clk: fix possible null pointer dereference 2015-01-17 11:33:57 -08:00
clocksource Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-01-25 17:47:34 -08:00
connector
coresight
cpufreq Merge branches 'pm-cpufreq' and 'pm-cpuidle' 2014-12-29 21:23:41 +01:00
cpuidle Merge branches 'pm-cpufreq' and 'pm-cpuidle' 2014-12-29 21:23:41 +01:00
crypto Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
dca
devfreq
dio
dma dmaengine: dw: balance PM runtime calls 2015-01-13 23:07:58 +05:30
dma-buf
edac Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
eisa
extcon Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
firewire firewire: sbp2: replace card lock by target lock 2014-12-10 20:53:21 +01:00
firmware Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
fmc
gpio A slew of fixes dealing with some irritating bugs (non-regressions) 2015-01-19 05:03:13 +12:00
gpu Merge tag 'drm-amdkfd-fixes-2015-01-13' of git://people.freedesktop.org/~gabbayo/linux into drm-fixes 2015-01-21 09:26:47 +10:00
hid HID: roccat: potential out of bounds in pyra_sysfs_write_settings() 2015-01-09 14:41:01 +01:00
hsi * misc. fixes in omap-ssi and nokia-modem drivers 2014-12-15 17:33:47 -08:00
hv Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
hwmon hwmon: (i5500_temp) Convert to use ATTRIBUTE_GROUPS macro 2015-01-24 14:16:22 +01:00
hwspinlock
i2c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2014-12-20 13:52:52 -08:00
ide Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
idle
iio First round of IIO fixes for the 3.19 cycle. 2015-01-08 17:59:04 -08:00
infiniband net/mlx4: Don't disable vxlan offloads under DMFS-A0 optimized steering 2015-01-15 19:35:30 -05:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2015-01-19 04:55:23 +12:00
iommu iommu/rockchip: Drop owner assignment from platform_drivers 2015-01-05 12:40:06 +01:00
ipack
irqchip irqchip: atmel-aic-common: Prevent clobbering of priority when changing IRQ type 2015-01-07 12:41:45 +00:00
isdn isdn: fix NUL (\0 or \x00) specification in string 2015-01-12 15:31:35 -05:00
leds leds: netxbig: fix oops at probe time 2015-01-13 13:49:01 -08:00
lguest virtio: allow finalize_features to fail 2014-12-09 16:32:32 +02:00
macintosh macintosh: therm_pm72: delete deprecated driver 2014-12-19 19:32:47 +01:00
mailbox Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
mcb mcb: mcb-pci: Only remap the 1st 0x200 bytes of BAR 0 2015-01-09 15:46:37 -08:00
md dm: fix handling of multiple internal suspends 2015-01-24 14:50:08 -05:00
media media fixes for v3.19-rc6 2015-01-24 14:34:54 -08:00
memory MTD updates for 3.19: 2014-12-17 09:59:26 -08:00
memstick
message
mfd - Avoid platform ID collision in da9052 2015-01-21 18:29:44 +12:00
misc Char/Misc driver fixes for 3.19-rc5 2015-01-17 08:18:08 +13:00
mmc mmc: sdhci: Set SDHCI_POWER_ON with external vmmc 2015-01-14 09:47:19 +01:00
mtd MTD updates for 3.19: 2014-12-17 09:59:26 -08:00
net s2io: use snprintf() as a safety feature 2015-01-19 19:42:21 -05:00
nfc More ACPI and power management updates for 3.19-rc1 2014-12-18 20:28:33 -08:00
ntb
nubus
of of/unittest: Overlays with sub-devices tests 2015-01-23 13:10:07 +00:00
oprofile
parisc parisc/PCI: Clip bridge windows to fit in upstream windows 2015-01-16 10:04:43 -06:00
parport Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
pci PCI: Add pci_claim_bridge_resource() to clip window if necessary 2015-01-16 10:04:42 -06:00
pcmcia Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
phy phy: phy-ti-pipe3: fix inconsistent enumeration of PCIe gen2 cards 2014-12-23 15:44:32 +05:30
pinctrl pinctrl: rockchip: Only mask interrupts; never disable 2015-01-30 10:38:36 +01:00
platform Revert "platform: x86: dell-laptop: Add support for keyboard backlight" 2015-01-23 11:10:32 -08:00
pnp
power More ACPI and power management updates for 3.19-rc1 2014-12-18 20:28:33 -08:00
powercap powercap / RAPL: add IDs for future Xeon CPUs 2014-12-17 02:35:42 +01:00
pps
ps3
ptp
pwm pwm: Changes for v3.19-rc1 2014-12-17 10:10:51 -08:00
rapidio
ras
regulator regulator: Fix for v3.19 2014-12-29 13:24:38 -08:00
remoteproc Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
reset reset: sunxi: fix spinlock initialization 2015-01-16 19:11:31 -08:00
rpmsg
rtc Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
s390 s390/zcrypt: kernel oops at insmod of the z90crypt device driver 2014-12-18 09:55:55 +01:00
sbus
scsi scsi_debug: test always evaluates to false, || should be used instead 2015-01-22 17:50:52 +01:00
sfi
sh drivers: sh / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM 2014-12-05 03:08:24 +01:00
sn
soc Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-12-15 15:52:01 -08:00
spi Merge remote-tracking branches 'spi/fix/img-spfi' and 'spi/fix/msiof' into spi-linus 2014-12-24 12:57:54 +00:00
spmi
ssb Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-12-11 17:56:37 -08:00
staging media fixes for v3.19-rc6 2015-01-24 14:34:54 -08:00
target iscsi-target: Fix typos in enum cmd_flags_table 2015-01-09 15:25:58 -08:00
tc
thermal Merge branch 'thermal-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2015-01-15 19:20:26 +13:00
thunderbolt
tty serial: samsung: Add the support for Exynos5433 SoC 2015-01-09 13:46:02 -08:00
uio Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
usb usb: fixes for v3.19-rc6 2015-01-14 16:27:23 -08:00
uwb
vfio vfio-pci: Fix the check on pci device type in vfio_pci_probe() 2015-01-07 10:29:11 -07:00
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2015-01-13 15:23:26 +13:00
video fbdev/broadsheetfb: fix memory leak 2015-01-13 15:13:45 +02:00
virt
virtio virtio_pci: document why we defer kfree 2015-01-06 16:35:36 +02:00
vlynq
vme
w1 Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
watchdog watchdog: drop owner assignment from platform_drivers 2015-01-21 14:52:34 +01:00
xen Merge remote-tracking branch 'scsi-queue/drivers-for-3.19' into for-linus 2014-12-18 05:56:29 -08:00
zorro
Kconfig Staging patches for 3.19-rc1 2014-12-15 18:06:13 -08:00
Makefile drivers: Move iommu/ before gpu/ in Makefile 2014-12-22 11:47:37 +02:00