On Thu, Feb 14, 2019 at 06:34:59PM +0100, Hugo Lefeuvre wrote: > @@ -402,6 +410,7 @@ static int handle_vsoc_cond_wait(struct file *filp, > struct vsoc_cond_wait *arg) > struct vsoc_region_data *data = vsoc_dev.regions_data + region_number; > int ret = 0; > struct vsoc_device_region *region_p = vsoc_region_from_filep(filp); > + struct vsoc_futex_wait_queue_t *it, *wait_queue = NULL; ^^^^^^^^^^^^^^^^^ > atomic_t *address = NULL; > ktime_t wake_time; > > @@ -415,10 +424,27 @@ static int handle_vsoc_cond_wait(struct file *filp, > struct vsoc_cond_wait *arg) > address = shm_off_to_virtual_addr(region_p->region_begin_offset + > arg->offset); > > + /* Find wait queue corresponding to offset or create it */ > + spin_lock(&data->futex_wait_queue_lock); > + list_for_each_entry(it, &data->futex_wait_queue_list, list) { > + if (wait_queue->offset == arg->offset) { ^^^^^^^^^^^^^^^^^^ You meant "it->offset".
> + wait_queue = it; > + break; > + } > + } > + > + if (!wait_queue) { > + wait_queue = kmalloc(sizeof(*wait_queue), GFP_KERNEL); > + wait_queue->offset = arg->offset; > + init_waitqueue_head(&wait_queue->queue); > + list_add(&wait_queue->list, &data->futex_wait_queue_list); > + } > + spin_unlock(&data->futex_wait_queue_lock); regards, dan carpenter _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel