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/** Push character read from input character device.
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/** Push character read from input character device.
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 *
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 *
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 * @param chardev Character device.
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 * @param chardev Character device.
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 * @param ch Character being pushed.
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 * @param ch Character being pushed.
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 */
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 */
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void chardev_push_character(chardev_t *chardev, __u8 ch)
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void chardev_push_character(chardev_t *chardev, uint8_t ch)
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{
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{
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    spinlock_lock(&chardev->lock);
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    spinlock_lock(&chardev->lock);
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    chardev->counter++;
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    chardev->counter++;
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    if (chardev->counter == CHARDEV_BUFLEN - 1) {
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    if (chardev->counter == CHARDEV_BUFLEN - 1) {
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        /* buffer full => disable device interrupt */
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        /* buffer full => disable device interrupt */