Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-10 22:21:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

gpio: siox: explicitly support only threaded irqs

Browse Source 
The gpio-siox driver uses handle_nested_irq() to implement its
interrupt support. This is only capable of handling threaded irq
actions. For a hardirq action it triggers a NULL pointer oops.
(It calls action->thread_fn which is NULL then.)

Prevent registration of a hardirq action by setting
gpio_irq_chip::threaded to true.

Cc: u.kleine-koenig@pengutronix.de
Fixes: be8c8facc7 ("gpio: new driver to work with a 8x12 siox")
Cc: stable@vger.kernel.org
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Ahmad Fatoum 2020-09-07 17:31:35 +02:00 committed by Bartosz Golaszewski
parent 214b0e1ad0
commit 45ccf65567
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpio/gpio-siox.c
View File

@ -245,6 +245,7 @@ static int gpio_siox_probe(struct siox_device *sdevice)
girq->chip = &ddata->ichip;
girq->default_type = IRQ_TYPE_NONE;
girq->handler = handle_level_irq;
girq->threaded = true;
ret = devm_gpiochip_add_data(dev, &ddata->gchip, NULL);
if (ret)