linux-kernel - [PATCH V2] extcon: palmas: Drop stray IRQF_EARLY

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <1459518767-20382-1-git-send-email-nm@ti.com>
Date:	Fri, 1 Apr 2016 08:52:47 -0500
From:	Nishanth Menon <nm@...com>
To:	Chanwoo Choi <cw00.choi@...sung.com>,
	MyungJoo Ham <myungjoo.ham@...sung.com>
CC:	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, Nishanth Menon <nm@...com>,
	Grygorii Strashko <grygorii.strashko@...com>,
	Tony Lindgren <tony@...mide.com>,
	Lee Jones <lee.jones@...aro.org>, Roger Quadros <rogerq@...com>
Subject: [PATCH V2] extcon: palmas: Drop stray IRQF_EARLY_RESUME flag

Palmas extcon IRQs are nested threaded and wired to the Palmas
interrupt controller. So, this flag is not required for nested
IRQs anymore, since commit 3c646f2c6aa9 ("genirq: Don't suspend
nested_thread irqs over system suspend") was merged. However, the
fix in commit ae64e42cc2b3 ("extcon: palmas: Drop IRQF_EARLY_RESUME
flag") missed a stray flag causing the following crash on resume on
BeagleBoard-X15 platform:

[   53.670141] Unhandled fault: imprecise external abort (0x1406) at 0x00000000
[..]
[   53.670141] [<c04ae734>] (omap_set_gpio_triggering) from [<c04aeb94>] (omap_gpio_unmask_irq+0xc0/0xc4)
[   53.670141] [<c04aeb94>] (omap_gpio_unmask_irq) from [<c01a0b88>] (irq_enable+0x30/0x44)
[   53.670141] [<c01a0b88>] (irq_enable) from [<c019ebd8>] (__enable_irq+0x54/0x78)
[   53.670141] [<c019ebd8>] (__enable_irq) from [<c01a4e60>] (resume_irqs+0xe8/0x100)
[   53.670141] [<c01a4e60>] (resume_irqs) from [<c0514840>] (syscore_resume+0x94/0x298)
[   53.670141] [<c0514840>] (syscore_resume) from [<c01981cc>] (suspend_devices_and_enter+0x790/0x9e4)
[   53.670141] [<c01981cc>] (suspend_devices_and_enter) from [<c0198a60>] (pm_suspend+0x640/0x75c)
[   53.670141] [<c0198a60>] (pm_suspend) from [<c0196bec>] (state_store+0x64/0xb8)
[   53.670141] [<c0196bec>] (state_store) from [<c0307944>] (kernfs_fop_write+0xc0/0x1bc)
[   53.670141] [<c0307944>] (kernfs_fop_write) from [<c028acb0>] (__vfs_write+0x1c/0xd8)
[   53.670141] [<c028acb0>] (__vfs_write) from [<c028bba0>] (vfs_write+0x90/0x16c)
[   53.670141] [<c028bba0>] (vfs_write) from [<c028c8c0>] (SyS_write+0x44/0x9c)
[   53.670141] [<c028c8c0>] (SyS_write) from [<c0107840>] (ret_fast_syscall+0x0/0x1c)
[..]

Fixes: ae64e42cc2b3 ("extcon: palmas: Drop IRQF_EARLY_RESUME flag")
Cc: Grygorii Strashko <grygorii.strashko@...com>
Cc: MyungJoo Ham <myungjoo.ham@...sung.com>
Cc: Chanwoo Choi <cw00.choi@...sung.com>
Cc: Tony Lindgren <tony@...mide.com>
Cc: Lee Jones <lee.jones@...aro.org>
Cc: Roger Quadros <rogerq@...com>

Reviewed-by: Grygorii Strashko <grygorii.strashko@...com>
Signed-off-by: Nishanth Menon <nm@...com>
---
based on v4.6-rc1
Changes in V2:
	- commit message updates for:
		- Trimming the crash log down to base stack trace
		- Fix up a few typos
		- Update commit log to indicate that this is a completion of
		  previously attempted fix .

V1: https://patchwork.kernel.org/patch/8718431/

 drivers/extcon/extcon-palmas.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
index 841a4b586395..8b3226dca1d9 100644
--- a/drivers/extcon/extcon-palmas.c
+++ b/drivers/extcon/extcon-palmas.c
@@ -348,8 +348,7 @@ static int palmas_usb_probe(struct platform_device *pdev)
 						palmas_vbus_irq_handler,
 						IRQF_TRIGGER_FALLING |
 						IRQF_TRIGGER_RISING |
-						IRQF_ONESHOT |
-						IRQF_EARLY_RESUME,
+						IRQF_ONESHOT,
 						"palmas_usb_vbus",
 						palmas_usb);
 		if (status < 0) {
-- 
2.8.0