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authorMaciej W. Rozycki <macro@linux-mips.org>2007-10-18 03:04:35 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-18 14:37:17 -0700
commit75e8b71d559632dd70c9799ea8b5c133a2ddcea9 (patch)
treeb6e278a84e0f221dfcd4d2095e104f3575f6ce7f /drivers
parent77bf2bab91e4e7df361963451c7b9a803516438c (diff)
tty_ioctl: fix the baud_table check in encode_baud_rate
The tty_termios_encode_baud_rate() function as defined by tty_ioctl.c has a problem with the baud_table within. The comparison operators are reversed and as a result this table's entries never match and BOTHER is always used. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/char/tty_ioctl.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/char/tty_ioctl.c b/drivers/char/tty_ioctl.c
index 745d552620b..0def089cc1f 100644
--- a/drivers/char/tty_ioctl.c
+++ b/drivers/char/tty_ioctl.c
@@ -228,7 +228,8 @@ EXPORT_SYMBOL(tty_termios_input_baud_rate);
* and will all go away once this is done.
*/
-void tty_termios_encode_baud_rate(struct ktermios *termios, speed_t ibaud, speed_t obaud)
+void tty_termios_encode_baud_rate(struct ktermios *termios,
+ speed_t ibaud, speed_t obaud)
{
int i = 0;
int ifound = -1, ofound = -1;
@@ -263,11 +264,15 @@ void tty_termios_encode_baud_rate(struct ktermios *termios, speed_t ibaud, speed
*/
do {
- if (obaud - oclose >= baud_table[i] && obaud + oclose <= baud_table[i]) {
+ if (obaud - oclose <= baud_table[i] &&
+ obaud + oclose >= baud_table[i]) {
termios->c_cflag |= baud_bits[i];
ofound = i;
}
- if (ibaud - iclose >= baud_table[i] && ibaud + iclose <= baud_table[i]) {
+ if (ibaud - iclose <= baud_table[i] &&
+ ibaud + iclose >= baud_table[i]) {
+ /* For the case input == output don't set IBAUD bits
+ if the user didn't do so */
if (ofound == i && !ibinput)
ifound = i;
#ifdef IBSHIFT