summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorDanny Kaehn <danny.kaehn@plexus.com>2023-09-19 16:22:45 -0500
committerJiri Kosina <jkosina@suse.cz>2023-10-04 21:18:19 +0200
commite3c2d2d144c082dd71596953193adf9891491f42 (patch)
treeff43301602e71915be7459965505db9f64dd3f60
parent29aa98d0fe013e2ab62aae4266231b7fb05d47a2 (diff)
hid: cp2112: Fix duplicate workqueue initialization
Previously the cp2112 driver called INIT_DELAYED_WORK within cp2112_gpio_irq_startup, resulting in duplicate initilizations of the workqueue on subsequent IRQ startups following an initial request. This resulted in a warning in set_work_data in workqueue.c, as well as a rare NULL dereference within process_one_work in workqueue.c. Initialize the workqueue within _probe instead. Fixes: 13de9cca514e ("HID: cp2112: add IRQ chip handling") Signed-off-by: Danny Kaehn <danny.kaehn@plexus.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
-rw-r--r--drivers/hid/hid-cp2112.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c
index 54c33a24f844..36f76c6dfa20 100644
--- a/drivers/hid/hid-cp2112.c
+++ b/drivers/hid/hid-cp2112.c
@@ -1151,8 +1151,6 @@ static unsigned int cp2112_gpio_irq_startup(struct irq_data *d)
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct cp2112_device *dev = gpiochip_get_data(gc);
- INIT_DELAYED_WORK(&dev->gpio_poll_worker, cp2112_gpio_poll_callback);
-
if (!dev->gpio_poll) {
dev->gpio_poll = true;
schedule_delayed_work(&dev->gpio_poll_worker, 0);
@@ -1307,6 +1305,8 @@ static int cp2112_probe(struct hid_device *hdev, const struct hid_device_id *id)
girq->handler = handle_simple_irq;
girq->threaded = true;
+ INIT_DELAYED_WORK(&dev->gpio_poll_worker, cp2112_gpio_poll_callback);
+
ret = gpiochip_add_data(&dev->gc, dev);
if (ret < 0) {
hid_err(hdev, "error registering gpio chip\n");