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#include <synch/waitq.h>
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#include <synch/waitq.h>
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#include <synch/spinlock.h>
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#include <synch/spinlock.h>
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#define CHARDEV_BUFLEN 512
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#define CHARDEV_BUFLEN 512
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struct chardev;
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/* Character device operations interface. */
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/* Character device operations interface. */
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struct chardev_operations {
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struct chardev_operations {
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    void (* suspend)(struct chardev *);/**< Suspend pushing characters. */
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    void (* suspend)(chardev_t *);      /**< Suspend pushing characters. */
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    void (* resume)(struct chardev *); /**< Resume pushing characters. */
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    void (* resume)(chardev_t *);       /**< Resume pushing characters. */
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    /** Write character to stream */
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    void (* write)(struct chardev *, char c);
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    void (* write)(chardev_t *, char c);    /**< Write character to stream. */
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};
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};
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typedef struct chardev_operations chardev_operations_t;
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typedef struct chardev_operations chardev_operations_t;
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/** Character input device. */
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/** Character input device. */