提交 8bf79388 编写于 作者: P Pan Bian 提交者: Oded Gabbay

drm/amdkfd: fix improper return value on error

In function kfd_wait_on_events(), when the call to copy_from_user()
fails, the value of return variable ret is 0. 0 indicates success, which
is inconsistent with the execution status. This patch fixes the bug by
assigning "-EFAULT" to ret when copy_from_user() returns an unexpected
value.
Signed-off-by: NPan Bian <bianpan2016@163.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>
上级 a7522cd9
...@@ -739,8 +739,10 @@ int kfd_wait_on_events(struct kfd_process *p, ...@@ -739,8 +739,10 @@ int kfd_wait_on_events(struct kfd_process *p,
struct kfd_event_data event_data; struct kfd_event_data event_data;
if (copy_from_user(&event_data, &events[i], if (copy_from_user(&event_data, &events[i],
sizeof(struct kfd_event_data))) sizeof(struct kfd_event_data))) {
ret = -EFAULT;
goto fail; goto fail;
}
ret = init_event_waiter(p, &event_waiters[i], ret = init_event_waiter(p, &event_waiters[i],
event_data.event_id, i); event_data.event_id, i);
......
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