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ppmgr: Add IS_ERR_OR_NULL to determine if the thread exists [1/1]

Browse Source 
PD#SWPL-8658

Problem:
handle is NULL cause kernel panic.

Solution:
Add IS_ERR_OR_NULL to prevent hanle from being NULL
to cause kernel panic.

Verify:
on T962X2

Change-Id: I3086a497d99646e6475a93b5a53b3c9aca2d2ada
Signed-off-by: renjiang.han <renjiang.han@amlogic.com>
This commit is contained in:
renjiang.han
2019-05-16 16:34:31 +08:00
committed by Chris KIM
parent a09dc24f35
commit 6442aabb31
1 changed files with 10 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/amlogic/media/video_processor/ppmgr/ppmgr_vpp.c
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@@ -3613,7 +3613,10 @@ int start_ppmgr_task(void)
ppmgr_quit_flag = false;
task = kthread_run(ppmgr_task, 0, "ppmgr");
}
task_running = 1;
if (!IS_ERR_OR_NULL(task))
task_running = 1;
else
task = NULL;
return 0;
}
@@ -3622,7 +3625,7 @@ void stop_ppmgr_task(void)
#ifdef PPMGR_TB_DETECT
stop_tb_task();
#endif
if (task) {
if (!IS_ERR_OR_NULL(task)) {
/* send_sig(SIGTERM, task, 1); */
ppmgr_quit_flag = true;
up(&thread_sem);
@@ -3867,7 +3870,10 @@ int start_tb_task(void)
tb_detect_init();
tb_detect_task = kthread_run(tb_task, 0, "tb_detect");
}
tb_task_running = 1;
if (!IS_ERR_OR_NULL(tb_detect_task))
tb_task_running = 1;
else
tb_detect_task = NULL;
return 0;
}
@@ -3875,7 +3881,7 @@ void stop_tb_task(void)
{
int val = 0;
if (tb_detect_task) {
if (!IS_ERR_OR_NULL(tb_detect_task)) {
tb_quit_flag = true;
up(&tb_sem);
/* send_sig(SIGTERM, tb_detect_task, 1); */