A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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stylus_pen: enable interrupt handler after wq inited

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- enable hall's interrupt handler need after workqueue inited;
   - fix the stylus_pen probabilistic cause of the kernel panic
     at startup.
- optimize the hall drivers's destruction process;

Change-Id: I02f455465e089e7822dca7f663c12fe955ea7603
Signed-off-by: huangjq9 <huangjq9@motorola.com>
Reviewed-on: https://gerrit.mot.com/1449781
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Jun Weng <wengjun1@motorola.com>
Reviewed-by: Huosheng Liao <liaohs@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
huangjq9 2019-11-06 10:08:20 +08:00 • committed by Jianqiu Huang
commit decf93e1ba
1 changed files with 14 additions and 8 deletions
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22
drivers/misc/pen/bu520xx_pen.c
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@ -436,11 +436,6 @@ static int bu520xx_pen_probe(struct platform_device *pdev)
gpio_request(hall_sensor_dev->gpio,"pen_detect_gpio");
gpio_direction_input(hall_sensor_dev->gpio);
//set irq
ret = set_irq_hall_sensor();
if (ret < 0)
goto fail_for_irq_hall_sensor;
//create input_dev
hall_sensor_dev->pen_indev = NULL;
ret = pen_input_device_create();
@ -460,14 +455,25 @@ static int bu520xx_pen_probe(struct platform_device *pdev)
#else
wakeup_source_init(&hall_sensor_dev->wake_lock, "pen_suspend_blocker");
#endif
//set irq
ret = set_irq_hall_sensor();
if (ret < 0)
goto fail_for_irq_hall_sensor;
pen_info("hall_sensor_init Done.\r\n");
return 0;
fail_for_create_input_dev:
free_irq(hall_sensor_dev->irq, hall_sensor_dev);
fail_for_irq_hall_sensor:
destroy_workqueue(hall_sensor_do_wq);
destroy_workqueue(hall_sensor_wq);
input_free_device(hall_sensor_dev->pen_indev);
#ifdef CONFIG_HAS_WAKELOCK
wake_lock_destroy(&hall_sensor_dev->wake_lock);
#else
wakeup_source_trash(&hall_sensor_dev->wake_lock);
#endif
fail_for_create_input_dev:
hall_sensor_dev->pen_indev=NULL;
gpio_free(hall_sensor_dev->gpio);
fail_for_set_gpio_hall_sensor:
kfree(hall_sensor_dev);