create another workqueue for adc timer_work

diff --git a/arch/arm/mach-rk2818/adc.c b/arch/arm/mach-rk2818/adc.c
old mode 100644 (file)
new mode 100755 (executable)
index 9f637f0..1296596
--- a/arch/arm/mach-rk2818/adc.c
+++ b/arch/arm/mach-rk2818/adc.c
@@ -30,7 +30,7 @@
  * action is required.
  */
  
-#if 0
+#if 1
 #define DBG(x...)   printk(x)
 #else
 #define DBG(x...)
@@ -59,6 +59,7 @@ struct adc_device {
        struct rk28_adc_client  *client;
        struct rk28_adc_client  *cur;
        struct rk28_adc_client  *ts_pend;
+       struct workqueue_struct         *timer_workqueue;
        struct work_struct      timer_work;
        void __iomem            *regs;
        struct timer_list timer;
@@ -318,8 +319,8 @@ static void rk28_adcscan_timer(unsigned long data)
 {
        pAdcDev->timer.expires  = jiffies + msecs_to_jiffies(30);
        add_timer(&pAdcDev->timer);
-       schedule_work(&pAdcDev->timer_work);
-       //rk28_read_adc(pAdcDev);
+       //schedule_work(&pAdcDev->timer_work);
+       queue_work(pAdcDev->timer_workqueue, &pAdcDev->timer_work);
 }
 
 static irqreturn_t rk28_adc_irq(int irq, void *pw)
@@ -419,6 +420,11 @@ static int rk28_adc_probe(struct platform_device *pdev)
        platform_set_drvdata(pdev, adc);
 
        init_MUTEX(&adc->lock);
+       adc->timer_workqueue = create_freezeable_workqueue("adc timer work");
+       if (!adc->timer_workqueue) {
+       printk("%s:cannot create workqueue\n",__FUNCTION__);
+       return -EBUSY;
+       }
        INIT_WORK(&adc->timer_work, adc_timer_work);
        /* Register with the core ADC driver. */
        adc->client = rk28_adc_register(pdev, NULL, NULL, 0);