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MLK-19989 drivers: mxc: hdp-cec: make the hdp-cec kernel thread freezeable 

the hdp-cec kernel thread should be freezeable during system suspend phase,
othwerwise, it will cause issues(hang) since it will still try to access
some resources such as clocks which are off during system suspend process.

Signed-off-by: Jason Liu <jason.hui.liu@nxp.com>
Cc: Sandor Yu <sandor.yu@nxp.com>
Cc: Laurentiu Palcu <laurentiu.palcu@nxp.com>
Acked-by: Sandor Yu <sandor.yu@nxp.com>
Reviewed-by: Laurentiu Palcu <laurentiu.palcu@nxp.com>
pull/10/head
Jason Liu 2018-10-25 10:32:08 +08:00
parent a858e9c0ed
commit 50acd9fc74
1 changed files with 4 additions and 1 deletions
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5
drivers/mxc/hdp-cec/imx-hdp-cec.c
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@ -22,6 +22,7 @@
#include <linux/version.h>
#include <linux/workqueue.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include <media/cec.h>
#include <soc/imx8/soc.h>
@ -173,8 +174,10 @@ static int cec_poll_worker(void *_cec)
int num_rx_msgs, i;
int sts;
set_freezable();
for (;;) {
if (kthread_should_stop())
if (kthread_freezable_should_stop(NULL))
break;
/* Check TX State */