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: <20200401174937.3969599-1-bmasney@redhat.com>
Date:   Wed,  1 Apr 2020 13:49:37 -0400
From:   Brian Masney <bmasney@...hat.com>
To:     linus.walleij@...aro.org, bgolaszewski@...libre.com
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        dhoward@...hat.com
Subject: [PATCH] drivers: gpio: xgene-sb: set valid IRQ type in to_irq()

xgene-sb is setup to be a hierarchical IRQ chip with the GIC as the
parent chip. xgene_gpio_sb_to_irq() currently sets the default IRQ type
to IRQ_TYPE_NONE, which the GIC loudly complains about with a WARN_ON().
Let's set the initial default to a sane value (IRQ_TYPE_EDGE_RISING)
that was determined by decoding the ACPI tables on affected hardware:

    Device (_SB.GPSB)
    {
        Name (_HID, "APMC0D15")  // _HID: Hardware ID
        Name (_CID, "APMC0D15")  // _CID: Compatible ID
        Name (_UID, "GPIOSB")  // _UID: Unique ID
        ...
        Name (_CRS, ResourceTemplate ()  // _CRS: Current Resource Settings
        {
            ...
            Interrupt (ResourceConsumer, Edge, ActiveHigh, Exclusive, ,, )
            {
                0x00000048,
            }
            ...
        }
    }

This can be overridden later as needed with irq_set_irq_type().

Signed-off-by: Brian Masney <bmasney@...hat.com>
---
 drivers/gpio/gpio-xgene-sb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-xgene-sb.c b/drivers/gpio/gpio-xgene-sb.c
index 25d86441666e..b45bfa9baa26 100644
--- a/drivers/gpio/gpio-xgene-sb.c
+++ b/drivers/gpio/gpio-xgene-sb.c
@@ -122,7 +122,7 @@ static int xgene_gpio_sb_to_irq(struct gpio_chip *gc, u32 gpio)
 	fwspec.fwnode = gc->parent->fwnode;
 	fwspec.param_count = 2;
 	fwspec.param[0] = GPIO_TO_HWIRQ(priv, gpio);
-	fwspec.param[1] = IRQ_TYPE_NONE;
+	fwspec.param[1] = IRQ_TYPE_EDGE_RISING;
 	return irq_create_fwspec_mapping(&fwspec);
 }
 
-- 
2.25.1

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ