Commit 4545b069 authored by Pali Rohár's avatar Pali Rohár Committed by Greg Kroah-Hartman
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tty: baudrate: Explicit usage of B0 for encoding input baudrate 



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: default avatarPali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20210927133516.8671-1-pali@kernel.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 27e8c8b4

drivers/tty/tty_baudrate.c

+1 −1
Original line number Diff line number Diff line
@@ -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