Messages in this thread Patch in this message | | | From | Herton Ronaldo Krzesinski <> | Subject | [PATCH 171/270] usb: acm: fix the computation of the number of data bits | Date | Mon, 26 Nov 2012 14:57:41 -0200 |
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3.5.7u1 -stable review patch. If anyone has any objections, please let me know.
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From: Nicolas Boullis <nboullis@debian.org>
commit 301a29da6e891e7eb95c843af0ecdbe86d01f723 upstream.
The current code assumes that CSIZE is 0000060, which appears to be wrong on some arches (such as powerpc).
Signed-off-by: Nicolas Boullis <nboullis@debian.org> Acked-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com> --- drivers/usb/class/cdc-acm.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index f4593ee..780e0d0 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -818,10 +818,6 @@ static const __u32 acm_tty_speed[] = { 2500000, 3000000, 3500000, 4000000 }; -static const __u8 acm_tty_size[] = { - 5, 6, 7, 8 -}; - static void acm_tty_set_termios(struct tty_struct *tty, struct ktermios *termios_old) { @@ -835,7 +831,21 @@ static void acm_tty_set_termios(struct tty_struct *tty, newline.bParityType = termios->c_cflag & PARENB ? (termios->c_cflag & PARODD ? 1 : 2) + (termios->c_cflag & CMSPAR ? 2 : 0) : 0; - newline.bDataBits = acm_tty_size[(termios->c_cflag & CSIZE) >> 4]; + switch (termios->c_cflag & CSIZE) { + case CS5: + newline.bDataBits = 5; + break; + case CS6: + newline.bDataBits = 6; + break; + case CS7: + newline.bDataBits = 7; + break; + case CS8: + default: + newline.bDataBits = 8; + break; + } /* FIXME: Needs to clear unsupported bits in the termios */ acm->clocal = ((termios->c_cflag & CLOCAL) != 0); -- 1.7.9.5
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