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| author | Sebastian Reichel <sre@kernel.org> | 2017-03-28 17:59:31 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2017-04-12 22:12:16 +0200 |
| commit | b3f80c8f75efb2e6a817a0e48bf36cd30685a138 (patch) | |
| tree | 0c87449d8c01772ebb9ec801b0de332a51c90331 /include/linux/serdev.h | |
| parent | 2f09276769a1f9c515e7767284fb188198ddfed7 (diff) | |
| download | linux-rt-b3f80c8f75efb2e6a817a0e48bf36cd30685a138.tar.gz | |
serdev: add serdev_device_wait_until_sent
Add method, which waits until the transmission buffer has been sent.
Note, that the change in ttyport_write_wakeup is related, since
tty_wait_until_sent will hang without that change.
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'include/linux/serdev.h')
| -rw-r--r-- | include/linux/serdev.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/serdev.h b/include/linux/serdev.h index 9519da6253a8..a308b206d204 100644 --- a/include/linux/serdev.h +++ b/include/linux/serdev.h @@ -81,6 +81,7 @@ struct serdev_controller_ops { void (*close)(struct serdev_controller *); void (*set_flow_control)(struct serdev_controller *, bool); unsigned int (*set_baudrate)(struct serdev_controller *, unsigned int); + void (*wait_until_sent)(struct serdev_controller *, long); }; /** @@ -186,6 +187,7 @@ int serdev_device_open(struct serdev_device *); void serdev_device_close(struct serdev_device *); unsigned int serdev_device_set_baudrate(struct serdev_device *, unsigned int); void serdev_device_set_flow_control(struct serdev_device *, bool); +void serdev_device_wait_until_sent(struct serdev_device *, long); int serdev_device_write_buf(struct serdev_device *, const unsigned char *, size_t); void serdev_device_write_flush(struct serdev_device *); int serdev_device_write_room(struct serdev_device *); @@ -223,6 +225,7 @@ static inline unsigned int serdev_device_set_baudrate(struct serdev_device *sdev return 0; } static inline void serdev_device_set_flow_control(struct serdev_device *sdev, bool enable) {} +static inline void serdev_device_wait_until_sent(struct serdev_device *sdev, long timeout) {} static inline int serdev_device_write_buf(struct serdev_device *sdev, const unsigned char *buf, size_t count) { return -ENODEV; |