A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-09 13:49:24 -04:00
Code Issues Projects Releases Packages Wiki Activity

msm: synx: default user callback fix

Browse source 
Avoid race with enqueue and dequeue of user callback
data. This is necessary since the callback added in the
event queue could be dequeued and variable cleaned up
before wake up function is completed.

Change-Id: I70aa09d8fc88bcb6e7e4b7aebd0f854a9de075d0
Signed-off-by: Sumukh Hallymysore Ravindra <shallymy@codeaurora.org>
This commit is contained in:
Sumukh Hallymysore Ravindra 2020-06-04 20:08:13 +05:30
commit 2b0acb8d64
1 changed files with 8 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

13
drivers/media/platform/msm/synx/synx_util.c
View file

@ -719,14 +719,17 @@ void synx_util_default_user_callback(s32 h_synx,
int status, void *data)
{
struct synx_client_cb *cb = data;
struct synx_client *client = NULL;
if (cb && cb->client) {
pr_debug("user cb queued for handle %d\n", h_synx);
client = cb->client;
pr_debug("[sess: %u] user cb queued for handle %d\n",
client->id, h_synx);
cb->kernel_cb.status = status;
mutex_lock(&cb->client->event_q_lock);
list_add_tail(&cb->node, &cb->client->event_q);
mutex_unlock(&cb->client->event_q_lock);
wake_up_all(&cb->client->event_wq);
mutex_lock(&client->event_q_lock);
list_add_tail(&cb->node, &client->event_q);
mutex_unlock(&client->event_q_lock);
wake_up_all(&client->event_wq);
} else {
pr_err("%s: invalid params\n", __func__);
}