linux-kernel - [RFC 2/5] gpiolib: acpi: Make acpi_gpio_in_ignore

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]

Date:   Sun, 31 Oct 2021 17:24:25 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Mark Gross <markgross@...nel.org>,
        Andy Shevchenko <andy@...radead.org>,
        Wolfram Sang <wsa@...-dreams.de>,
        Sebastian Reichel <sre@...nel.org>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Ard Biesheuvel <ardb@...nel.org>
Cc:     Hans de Goede <hdegoede@...hat.com>, Len Brown <lenb@...nel.org>,
        linux-acpi@...r.kernel.org, Yauhen Kharuzhy <jekhor@...il.com>,
        Tsuchiya Yuto <kitakar@...il.com>,
        platform-driver-x86@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-efi@...r.kernel.org
Subject: [RFC 2/5] gpiolib: acpi: Make acpi_gpio_in_ignore_list() more generic

Pass the ignore list to parse into acpi_gpio_in_ignore_list() instead
of hardcoding it to the ignore_wake module-param.

This is a preparation patch for adding support to fully ignore some
_AEI entries.

Signed-off-by: Hans de Goede <hdegoede@...hat.com>
---
 drivers/gpio/gpiolib-acpi.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 47712b6903b5..342219a58a32 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -320,13 +320,15 @@ static struct gpio_desc *acpi_request_own_gpiod(struct gpio_chip *chip,
 	return desc;
 }
 
-static bool acpi_gpio_in_ignore_list(const char *controller_in, int pin_in)
+static bool acpi_gpio_in_ignore_list(const char *ignore_list,
+				     const char *controller_in,
+				     int pin_in)
 {
 	const char *controller, *pin_str;
 	int len, pin;
 	char *endp;
 
-	controller = ignore_wake;
+	controller = ignore_list;
 	while (controller) {
 		pin_str = strchr(controller, '@');
 		if (!pin_str)
@@ -350,8 +352,8 @@ static bool acpi_gpio_in_ignore_list(const char *controller_in, int pin_in)
 
 	return false;
 err:
-	pr_err_once("Error invalid value for gpiolib_acpi.ignore_wake: %s\n",
-		    ignore_wake);
+	pr_err_once("Error invalid value for gpiolib_acpi.ignore_xxx: %s\n",
+		    ignore_list);
 	return false;
 }
 
@@ -363,7 +365,7 @@ static bool acpi_gpio_irq_is_wake(struct device *parent,
 	if (agpio->wake_capable != ACPI_WAKE_CAPABLE)
 		return false;
 
-	if (acpi_gpio_in_ignore_list(dev_name(parent), pin)) {
+	if (acpi_gpio_in_ignore_list(ignore_wake, dev_name(parent), pin)) {
 		dev_info(parent, "Ignoring wakeup on pin %d\n", pin);
 		return false;
 	}
-- 
2.31.1