diff options
| author | Meco Man <[email protected]> | 2023-02-05 18:35:33 -0500 |
|---|---|---|
| committer | Man, Jianting (Meco) <[email protected]> | 2023-02-07 21:43:57 -0500 |
| commit | f58d3c5200d5a51a39503c5311422e2fb99d3d20 (patch) | |
| tree | cab3ae78ea13bfb649e5087c138bf9a951746a4b /components/drivers/serial/serial.c | |
| parent | 890c1c9264e425f20c2925de4095fb46ca4e74aa (diff) | |
rt_device_write/read return data type as rt_ssize_t
rt_ssize_t can give negative error code, which follows the unix style correctly
Diffstat (limited to 'components/drivers/serial/serial.c')
| -rw-r--r-- | components/drivers/serial/serial.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/components/drivers/serial/serial.c b/components/drivers/serial/serial.c index d667d70efd..06b519166c 100644 --- a/components/drivers/serial/serial.c +++ b/components/drivers/serial/serial.c @@ -381,7 +381,7 @@ static void _serial_check_buffer_size(void) } #if defined(RT_USING_POSIX_STDIO) || defined(RT_SERIAL_USING_DMA) -static rt_size_t _serial_fifo_calc_recved_len(struct rt_serial_device *serial) +static rt_ssize_t _serial_fifo_calc_recved_len(struct rt_serial_device *serial) { struct rt_serial_rx_fifo *rx_fifo = (struct rt_serial_rx_fifo *) serial->serial_rx; @@ -413,7 +413,7 @@ static rt_size_t _serial_fifo_calc_recved_len(struct rt_serial_device *serial) * * @return length */ -static rt_size_t rt_dma_calc_recved_len(struct rt_serial_device *serial) +static rt_ssize_t rt_dma_calc_recved_len(struct rt_serial_device *serial) { return _serial_fifo_calc_recved_len(serial); } @@ -850,7 +850,7 @@ static rt_err_t rt_serial_close(struct rt_device *dev) return RT_EOK; } -static rt_size_t rt_serial_read(struct rt_device *dev, +static rt_ssize_t rt_serial_read(struct rt_device *dev, rt_off_t pos, void *buffer, rt_size_t size) @@ -876,7 +876,7 @@ static rt_size_t rt_serial_read(struct rt_device *dev, return _serial_poll_rx(serial, (rt_uint8_t *)buffer, size); } -static rt_size_t rt_serial_write(struct rt_device *dev, +static rt_ssize_t rt_serial_write(struct rt_device *dev, rt_off_t pos, const void *buffer, rt_size_t size) |