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| author | David Woodhouse <dwmw2@infradead.org> | 2007-08-22 14:01:11 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-08-22 19:52:44 -0700 |
| commit | 20620d688ac6ff8ea01a873e46febf5a6a7909f1 (patch) | |
| tree | d96669333a906efd030016267aae93986434487a /drivers/serial/8250_pci.c | |
| parent | 187226f57f1381cfc63216979b4375f30e593795 (diff) | |
| download | kernel_samsung_smdk4412-20620d688ac6ff8ea01a873e46febf5a6a7909f1.zip kernel_samsung_smdk4412-20620d688ac6ff8ea01a873e46febf5a6a7909f1.tar.gz kernel_samsung_smdk4412-20620d688ac6ff8ea01a873e46febf5a6a7909f1.tar.bz2 | |
serial: don't optimise away baud rate changes when BOTHER is used
The uart_set_termios() function will bail out early without bothering to
touch the hardware, if it decides that nothing "relevant" has changed.
Unfortunately, its idea of "relevant" doesn't include c_[io]speed. So if
the baud rate bits are BOTHER and you just change the speed, the change
gets optimised away.
This patch makes it ignore the old Bfoo bits in c_cflag and just check
whether c_ispeed and c_ospeed have changed. Those integers are always set
appropriately for us by set_termios().
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Acked-by: Alan Cox <alan@redhat.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/serial/8250_pci.c')
0 files changed, 0 insertions, 0 deletions