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Revert "serial: set the errno if and only if in thread context" 

This reverts commit 07bd09fc0f.
The validation of the context is done with in `rt_set_errno`. So it's
safe to call it here.
This commit is contained in:
Grissiom 2013-10-25 21:23:15 +08:00
parent 166531168d
commit 6bb2c0f2ea
1 changed files with 3 additions and 4 deletions
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7
components/drivers/serial/serial.c
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@ -257,8 +257,8 @@ static rt_size_t rt_serial_read(struct rt_device *dev,
}
read_nbytes = (rt_uint32_t)ptr - (rt_uint32_t)buffer;
/* set error code if and only if in thread context */
if (read_nbytes == 0 && !rt_interrupt_get_nest())
/* set error code */
if (read_nbytes == 0)
{
rt_set_errno(-RT_EEMPTY);
}
@ -349,8 +349,7 @@ static rt_size_t rt_serial_write(struct rt_device *dev,
}
write_nbytes = (rt_uint32_t)ptr - (rt_uint32_t)buffer;
/* set error code if and only if in thread context */
if (write_nbytes == 0 && !rt_interrupt_get_nest())
if (write_nbytes == 0)
{
rt_set_errno(-RT_EFULL);
}