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rt_device_write/read return data type as rt_ssize_t

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rt_ssize_t can give negative error code, which follows the unix style correctly
This commit is contained in:
Meco Man
2023-02-07 21:43:57 -05:00
committed by Man, Jianting (Meco)
parent 890c1c9264
commit f58d3c5200
308 changed files with 671 additions and 685 deletions
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include/rtthread.h
+2 -2
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@@ -560,11 +560,11 @@ rt_device_set_tx_complete(rt_device_t dev,
rt_err_t rt_device_init (rt_device_t dev);
rt_err_t rt_device_open (rt_device_t dev, rt_uint16_t oflag);
rt_err_t rt_device_close(rt_device_t dev);
rt_size_t rt_device_read (rt_device_t dev,
rt_ssize_t rt_device_read(rt_device_t dev,
rt_off_t pos,
void *buffer,
rt_size_t size);
rt_size_t rt_device_write(rt_device_t dev,
rt_ssize_t rt_device_write(rt_device_t dev,
rt_off_t pos,
const void *buffer,
rt_size_t size);