From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Christian Lamparter <chunkeey@gmail.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Sasha Levin <sashal@kernel.org>,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH AUTOSEL 4.4 23/35] powerpc/4xx/uic: clear pending interrupt after irq type/pol change
Date: Fri, 19 Jul 2019 00:14:11 -0400 [thread overview]
Message-ID: <20190719041423.19322-23-sashal@kernel.org> (raw)
In-Reply-To: <20190719041423.19322-1-sashal@kernel.org>
From: Christian Lamparter <chunkeey@gmail.com>
[ Upstream commit 3ab3a0689e74e6aa5b41360bc18861040ddef5b1 ]
When testing out gpio-keys with a button, a spurious
interrupt (and therefore a key press or release event)
gets triggered as soon as the driver enables the irq
line for the first time.
This patch clears any potential bogus generated interrupt
that was caused by the switching of the associated irq's
type and polarity.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/sysdev/uic.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/sysdev/uic.c b/arch/powerpc/sysdev/uic.c
index 6893d8f236df..225346dda151 100644
--- a/arch/powerpc/sysdev/uic.c
+++ b/arch/powerpc/sysdev/uic.c
@@ -158,6 +158,7 @@ static int uic_set_irq_type(struct irq_data *d, unsigned int flow_type)
mtdcr(uic->dcrbase + UIC_PR, pr);
mtdcr(uic->dcrbase + UIC_TR, tr);
+ mtdcr(uic->dcrbase + UIC_SR, ~mask);
raw_spin_unlock_irqrestore(&uic->lock, flags);
--
2.20.1
next prev parent reply other threads:[~2019-07-19 4:15 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-19 4:13 [PATCH AUTOSEL 4.4 01/35] drm/panel: simple: Fix panel_simple_dsi_probe Sasha Levin
2019-07-19 4:13 ` [PATCH AUTOSEL 4.4 02/35] usb: core: hub: Disable hub-initiated U1/U2 Sasha Levin
2019-07-19 4:13 ` [PATCH AUTOSEL 4.4 03/35] tty: max310x: Fix invalid baudrate divisors calculator Sasha Levin
2019-07-19 4:13 ` [PATCH AUTOSEL 4.4 04/35] pinctrl: rockchip: fix leaked of_node references Sasha Levin
2019-07-19 4:13 ` [PATCH AUTOSEL 4.4 05/35] tty: serial: cpm_uart - fix init when SMC is relocated Sasha Levin
2019-07-19 4:13 ` [PATCH AUTOSEL 4.4 06/35] drm/edid: Fix a missing-check bug in drm_load_edid_firmware() Sasha Levin
2019-07-19 4:13 ` [PATCH AUTOSEL 4.4 07/35] memstick: Fix error cleanup path of memstick_init Sasha Levin
2019-07-19 4:13 ` [PATCH AUTOSEL 4.4 08/35] tty/serial: digicolor: Fix digicolor-usart already registered warning Sasha Levin
2019-07-19 4:13 ` [PATCH AUTOSEL 4.4 09/35] tty: serial: msm_serial: avoid system lockup condition Sasha Levin
2019-07-19 4:13 ` [PATCH AUTOSEL 4.4 10/35] drm/virtio: Add memory barriers for capset cache Sasha Levin
2019-07-19 4:13 ` [PATCH AUTOSEL 4.4 11/35] phy: renesas: rcar-gen2: Fix memory leak at error paths Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 12/35] powerpc/pseries/mobility: prevent cpu hotplug during DT update Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 13/35] powerpc/pseries/mobility: rebuild cacheinfo hierarchy post-migration Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 14/35] usb: gadget: Zero ffs_io_data Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 15/35] powerpc/pci/of: Fix OF flags parsing for 64bit BARs Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 16/35] PCI: sysfs: Ignore lockdep for remove attribute Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 17/35] iio: st_accel: fix iio_triggered_buffer_{pre,post}enable positions Sasha Levin
2019-07-21 17:23 ` Jonathan Cameron
2019-07-22 6:47 ` Ardelean, Alexandru
2019-07-28 15:43 ` Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 18/35] iio: iio-utils: Fix possible incorrect mask calculation Sasha Levin
2019-07-21 17:27 ` Jonathan Cameron
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 19/35] recordmcount: Fix spurious mcount entries on powerpc Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 20/35] mfd: core: Set fwnode for created devices Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 21/35] mfd: arizona: Fix undefined behavior Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 22/35] um: Silence lockdep complaint about mmap_sem Sasha Levin
2019-07-19 4:14 ` Sasha Levin [this message]
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 24/35] serial: sh-sci: Fix TX DMA buffer flushing and workqueue races Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 25/35] PCI: tegra: Enable Relaxed Ordering only for Tegra20 & Tegra30 Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 26/35] kallsyms: exclude kasan local symbols on s390 Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 27/35] perf test mmap-thread-lookup: Initialize variable to suppress memory sanitizer warning Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 28/35] f2fs: avoid out-of-range memory access Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 29/35] mailbox: handle failed named mailbox channel request Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 30/35] powerpc/eeh: Handle hugepages in ioremap space Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 31/35] sh: prevent warnings when using iounmap Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 32/35] mm/kmemleak.c: fix check for softirq context Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 33/35] 9p: pass the correct prototype to read_cache_page Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 34/35] mm/mmu_notifier: use hlist_add_head_rcu() Sasha Levin
2019-07-19 4:14 ` [PATCH AUTOSEL 4.4 35/35] locking/lockdep: Fix lock used or unused stats error Sasha Levin
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