linux_dsm_epyc7002/drivers
Nicolas Boichat 35594bc7ce pinctrl: mediatek: Ignore interrupts that are wake only during resume
Before suspending, mtk-eint would set the interrupt mask to the
one in wake_mask. However, some of these interrupts may not have a
corresponding interrupt handler, or the interrupt may be disabled.

On resume, the eint irq handler would trigger nevertheless,
and irq/pm.c:irq_pm_check_wakeup would be called, which would
try to call irq_disable. However, if the interrupt is not enabled
(irqd_irq_disabled(&desc->irq_data) is true), the call does nothing,
and the interrupt is left enabled in the eint driver.

Especially for level-sensitive interrupts, this will lead to an
interrupt storm on resume.

If we detect that an interrupt is only in wake_mask, but not in
cur_mask, we can just mask it out immediately (as mtk_eint_resume
would do anyway at a later stage in the resume sequence, when
restoring cur_mask).

Fixes: bf22ff45be ("genirq: Avoid unnecessary low level irq function calls")
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Acked-by: Sean Wang <sean.wang@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2019-06-26 16:09:50 +02:00
..
accessibility treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 70 2019-05-24 17:36:47 +02:00
acpi Power management fixes for 5.2-rc3 2019-05-31 10:38:35 -07:00
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base More power management updates for 5.2-rc1 2019-05-15 08:46:44 -07:00
bcma
block for-linus-20190601 2019-06-02 09:27:44 -07:00
bluetooth treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
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clk SPDX update for 5.2-rc3, round 1 2019-05-31 08:34:32 -07:00
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crypto crypto: ux500 - fix license comment syntax error 2019-06-01 18:29:58 +02:00
dax libnvdimm fixes v5.2-rc2 2019-05-25 10:11:23 -07:00
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firmware Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-06-02 11:06:13 -07:00
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gpio SPDX update for 5.2-rc3, round 1 2019-05-31 08:34:32 -07:00
gpu SPDX update for 5.2-rc3, round 1 2019-05-31 08:34:32 -07:00
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hwspinlock
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i2c Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-06-02 10:18:11 -07:00
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iio SPDX update for 5.2-rc3, round 1 2019-05-31 08:34:32 -07:00
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input treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 197 2019-05-30 11:29:22 -07:00
interconnect treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
iommu drivers/iommu/intel-iommu.c: fix variable 'iommu' set but not used 2019-06-01 15:51:32 -07:00
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irqchip treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
isdn SPDX update for 5.2-rc3, round 1 2019-05-31 08:34:32 -07:00
leds LED fix for 5.2-rc3 2019-06-02 10:14:25 -07:00
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net SPDX update for 5.2-rc3, round 1 2019-05-31 08:34:32 -07:00
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nvdimm libnvdimm fixes v5.2-rc2 2019-05-25 10:11:23 -07:00
nvme for-linus-20190524 2019-05-24 16:02:14 -07:00
nvmem treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
of of_net: Fix missing of_find_device_by_node ref count drop 2019-05-13 08:52:37 -07:00
opp treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
oprofile
parisc treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 217 2019-05-30 11:29:54 -07:00
parport treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pci PCI: PM: Avoid possible suspend-to-idle issue 2019-05-27 10:55:08 +02:00
pcmcia treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
perf treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
phy treewide: fix typos of SPDX-License-Identifier 2019-06-01 18:29:58 +02:00
pinctrl pinctrl: mediatek: Ignore interrupts that are wake only during resume 2019-06-26 16:09:50 +02:00
platform treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
pnp treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 150 2019-05-30 11:25:19 -07:00
power treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 218 2019-05-30 11:29:54 -07:00
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regulator treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
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rpmsg
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s390 SCSI fixes on 20190601 2019-06-02 09:26:34 -07:00
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scsi SCSI fixes on 20190601 2019-06-02 09:26:34 -07:00
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staging Staging/IIO driver fixes for 5.2-rc3 2019-05-31 08:31:45 -07:00
target treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
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thermal Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal 2019-06-02 10:16:09 -07:00
thunderbolt treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
tty vt/fbcon: deinitialize resources in visual_init() after failed memory allocation 2019-05-24 17:08:18 +02:00
uio treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
usb usbip: usbip_host: fix stub_dev lock context imbalance regression 2019-05-29 13:26:32 -07:00
uwb treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
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video SPDX update for 5.2-rc3, round 1 2019-05-31 08:34:32 -07:00
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xen xen: fixes for 5.2-rc3 2019-05-31 10:53:34 -07:00
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