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Commit 759e510c authored by Gregory Nutt's avatar Gregory Nutt
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Per Matias Edlund: I recently used the tcflush function and found that it...

Per Matias Edlund:  I recently used the tcflush function and found that it failed with ENOTTY. The reason is that the TCFLSH case in the function uart_ioctl in the file drivers/serial/serial.c does not update the ret value."  On success, the TCFLSH IOCTL logic needs to explicitly set the return value (ret) to zero.
parent e4d43e8b
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......@@ -1339,6 +1339,7 @@ static int uart_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
}
leave_critical_section(flags);
ret = 0;
}
break;
......
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