The CP2112 generates interrupts from a polling routine on a thread,
and can only support threaded interrupts. This patch configures the
gpiochip irq chip with this flag, disallowing consumers to request
a hard IRQ from this driver, which resulted in a segfault previously.
Signed-off-by: Danny Kaehn <kaehndan@xxxxxxxxx>
---
Note -- this patch was first submitted with the patchset:
"DeviceTree Support for USB-HID Devices and CP2112"
It is now submitted separately upon request, as it is not coupled to the
other patches in that series.
drivers/hid/hid-cp2112.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c
index 1e16b0fa310d..27cadadda7c9 100644
--- a/drivers/hid/hid-cp2112.c
+++ b/drivers/hid/hid-cp2112.c
@@ -1354,6 +1354,7 @@ static int cp2112_probe(struct hid_device *hdev, const struct hid_device_id *id)
girq->parents = NULL;
girq->default_type = IRQ_TYPE_NONE;
girq->handler = handle_simple_irq;
+ girq->threaded = true;
ret = gpiochip_add_data(&dev->gc, dev);
if (ret < 0) {
--
2.25.1
