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@@ -72,6 +72,7 @@ static void gpio_status_delay_work_func(struct work_struct *work)
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dev->last_status = value;
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dev->last_status = value;
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dev->status_changed = 1;
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dev->status_changed = 1;
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wake_up_interruptible(&dev->read_wait);
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wake_up_interruptible(&dev->read_wait);
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+ pr_info("%s %s %d value=%d\n", __FILE__, __func__, __LINE__, value);
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}
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}
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// debug code
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// debug code
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@@ -142,9 +143,9 @@ static ssize_t cashd_read(struct file *filp, char __user *buf,
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printk(KERN_INFO "gpio_monitor: wait interrupted by signal\n");
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printk(KERN_INFO "gpio_monitor: wait interrupted by signal\n");
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return -ERESTARTSYS;
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return -ERESTARTSYS;
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}
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}
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- dev->in_status = readl(dev->gpio_status_reg_base);
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+ // dev->in_status = readl(dev->gpio_status_reg_base);
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- if(dev->in_status & 0x2)
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+ if(dev->last_status & 0x2)
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{
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{
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ret = copy_to_user(buf, "o", 1);
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ret = copy_to_user(buf, "o", 1);
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if(ret != 0)
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if(ret != 0)
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