linux-kernel - [PATCH] regmap: irq: Make IRQ type support optional

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]

Date:   Fri, 28 Dec 2018 11:23:58 +0000
From:   Charles Keepax <ckeepax@...nsource.cirrus.com>
To:     <broonie@...nel.org>
CC:     <linux-kernel@...r.kernel.org>, <patches@...nsource.cirrus.com>
Subject: [PATCH] regmap: irq: Make IRQ type support optional

Currently only gpio-max77620 is using the type support in regmap IRQ,
but the implementation causes the irq_set_type operation to fail on all
other regmap IRQ chips. Avoid these regressions by skipping the type
handling on any chips that don't define a set of supported types.

Fixes: 1c2928e3e321 ("regmap: regmap-irq/gpio-max77620: add level-irq support")
Signed-off-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
---
 drivers/base/regmap/regmap-irq.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index 1bd1145ad8b5e..8c674f1ad0fc8 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -257,6 +257,9 @@ static int regmap_irq_set_type(struct irq_data *data, unsigned int type)
 	int reg;
 	const struct regmap_irq_type *t = &irq_data->type;
 
+	if (!t->types_supported)
+		return 0;
+
 	if ((t->types_supported & type) != type)
 		return -ENOTSUPP;
 
-- 
2.11.0