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tty: baudrate: Explicit usage of B0 for encoding input baudrate

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Function tty_termios_input_baud_rate() checks IBSHIFT & CBAUD against B0
constant to determinate if input speed equals to output speed. So do same
B0 check also in tty_termios_encode_baud_rate() function to make these two
functions compatible.

Currently macro B0 is defined to 0 so there is no functional change.

This change just make code more explicit to show that Bnnn constants are
stored in CBAUD.

Signed-off-by: Pali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20210927133516.8671-1-pali@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pali Rohár 2021-09-27 15:35:16 +02:00 committed by Greg Kroah-Hartman
parent 27e8c8b483
commit 4545b069aa
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/tty_baudrate.c
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@ -154,7 +154,7 @@ void tty_termios_encode_baud_rate(struct ktermios *termios,
termios->c_ospeed = obaud;
#ifdef IBSHIFT
if ((termios->c_cflag >> IBSHIFT) & CBAUD)
if (((termios->c_cflag >> IBSHIFT) & CBAUD) != B0)
ibinput = 1; /* An input speed was specified */
#endif
#ifdef BOTHER