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| author | Nicolas Boullis <nboullis@debian.org> | 2012-10-16 00:06:23 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-17 13:45:49 -0700 |
| commit | 301a29da6e891e7eb95c843af0ecdbe86d01f723 (patch) | |
| tree | 06a394d2ee61a08f7ba07741eea2ff43fa67a82e /drivers | |
| parent | 6e1babb3ff2651376f2e9843569fcb39cfe4686b (diff) | |
| download | linux-301a29da6e891e7eb95c843af0ecdbe86d01f723.tar.gz linux-301a29da6e891e7eb95c843af0ecdbe86d01f723.tar.bz2 linux-301a29da6e891e7eb95c843af0ecdbe86d01f723.zip | |
usb: acm: fix the computation of the number of data bits
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>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 572f4e7bd3ff..6e49ec6f3adc 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -817,10 +817,6 @@ 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) { @@ -834,7 +830,21 @@ 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); |