linux-kernel - [PATCH RESEND V2] extcon: usb-gpio: Remove disable irq operation in system sleep.

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>] [day] [month] [year] [list]

Message-Id: <1646981103-30050-1-git-send-email-brucechen251@gmail.com>
Date:   Fri, 11 Mar 2022 14:45:03 +0800
From:   Bruce Chen <brucechen251@...il.com>
To:     bruce.chen@...soc.com, rogerq@...nel.org, myungjoo.ham@...sung.com,
        cw00.choi@...sung.com, linux-kernel@...r.kernel.org
Cc:     orsonzhai@...il.com, gengcixi@...il.com, baolin.wang7@...il.com,
        zhang.lyra@...il.com
Subject: [PATCH RESEND V2] extcon: usb-gpio: Remove disable irq operation in system sleep.

From: Bruce Chen <bruce.chen@...soc.com>

If disable vbus/id irq, it will lead to wakeup system fail
in unisoc platform. In unisoc platform, Irq enable and irq
wakeup are the same interrupt line. So remove disable vbus/id
irq operation is a way to solve the issue.

Signed-off-by: Bruce Chen <bruce.chen@...soc.com>
Acked-by: Roger Quadros <rogerq@...nel.org>
---
 drivers/extcon/extcon-usb-gpio.c | 15 ---------------
 1 file changed, 15 deletions(-)

diff --git a/drivers/extcon/extcon-usb-gpio.c b/drivers/extcon/extcon-usb-gpio.c
index f2b65d9..40d967a 100644
--- a/drivers/extcon/extcon-usb-gpio.c
+++ b/drivers/extcon/extcon-usb-gpio.c
@@ -226,16 +226,6 @@ static int usb_extcon_suspend(struct device *dev)
 		}
 	}
 
-	/*
-	 * We don't want to process any IRQs after this point
-	 * as GPIOs used behind I2C subsystem might not be
-	 * accessible until resume completes. So disable IRQ.
-	 */
-	if (info->id_gpiod)
-		disable_irq(info->id_irq);
-	if (info->vbus_gpiod)
-		disable_irq(info->vbus_irq);
-
 	if (!device_may_wakeup(dev))
 		pinctrl_pm_select_sleep_state(dev);
 
@@ -267,11 +257,6 @@ static int usb_extcon_resume(struct device *dev)
 		}
 	}
 
-	if (info->id_gpiod)
-		enable_irq(info->id_irq);
-	if (info->vbus_gpiod)
-		enable_irq(info->vbus_irq);
-
 	queue_delayed_work(system_power_efficient_wq,
 			   &info->wq_detcable, 0);
 
-- 
1.9.1