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serial: usbtty: Fix puts function

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This function has incorrect implementation of prepending CR prior LF.
Without this patch it prepended CR prior whole string which is going to be
written and let LF without leading CR. Fix this issue by inserting CR at
correct place to make output on usbtty serial console more readable.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
This commit is contained in:
Pali Rohár 2021-02-07 14:50:01 +01:00 committed by Marek Vasut
parent 78af81c345
commit d3fb8fee7d
1 changed files with 2 additions and 2 deletions
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4
drivers/serial/usbtty.c
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@ -500,8 +500,8 @@ void usbtty_puts(struct stdio_dev *dev, const char *str)
n = next_nl_pos (str);
if (str[n] == '\n') {
__usbtty_puts("\r", 1);
__usbtty_puts(str, n + 1);
__usbtty_puts(str, n);
__usbtty_puts("\r\n", 2);
str += (n + 1);
len -= (n + 1);
} else {