linux-kernel - [PATCH v1 01/16] pinctrl: cy8c95x0: Respect IRQ trigger settings from firmware

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

Message-ID: <20250117142304.596106-2-andriy.shevchenko@linux.intel.com>
Date: Fri, 17 Jan 2025 16:21:45 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Patrick Rudolph <patrick.rudolph@...ements.com>,
	Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH v1 01/16] pinctrl: cy8c95x0: Respect IRQ trigger settings from firmware

Som of the platforms may connect the INT pin via inversion logic
effectively make the triggering to be active-low.
Remove explicit trigger flag to respect the settings from firmware.

Without this change even idling chip produces spurious interrupts
and kernel disables the line in the result:

  irq 33: nobody cared (try booting with the "irqpoll" option)
  CPU: 0 UID: 0 PID: 125 Comm: irq/33-i2c-INT3 Not tainted 6.12.0-00236-g8b874ed11dae #64
  Hardware name: Intel Corp. QUARK/Galileo, BIOS 0x01000900 01/01/2014
  ...
  handlers:
  [<86e86bea>] irq_default_primary_handler threaded [<d153e44a>] cy8c95x0_irq_handler [pinctrl_cy8c95x0]
  Disabling IRQ #33

Fixes: e6cbbe42944d ("pinctrl: Add Cypress cy8c95x0 support")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/pinctrl/pinctrl-cy8c95x0.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/pinctrl-cy8c95x0.c b/drivers/pinctrl/pinctrl-cy8c95x0.c
index 0d6c2027d4c1..825bd1e528b5 100644
--- a/drivers/pinctrl/pinctrl-cy8c95x0.c
+++ b/drivers/pinctrl/pinctrl-cy8c95x0.c
@@ -1347,7 +1347,7 @@ static int cy8c95x0_irq_setup(struct cy8c95x0_pinctrl *chip, int irq)

 	ret = devm_request_threaded_irq(chip->dev, irq,
 					NULL, cy8c95x0_irq_handler,
-					IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_HIGH,
+					IRQF_ONESHOT | IRQF_SHARED,
 					dev_name(chip->dev), chip);
 	if (ret) {
 		dev_err(chip->dev, "failed to request irq %d\n", irq);
-- 
2.43.0.rc1.1336.g36b5255a03ac