diff options
| author | Steve French <sfrench@us.ibm.com> | 2007-07-19 04:38:57 +0400 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2007-07-19 04:38:57 +0400 |
| commit | 1ff8392c32a2645d2665ca779ecb91bb29361c13 (patch) | |
| tree | 860b95e9a499ade4060848740fc6ce1fbb4e4e8d /drivers/usb/serial/mct_u232.h | |
| parent | 70b315b0dd3879cb3ab8aadffb14f10b2d19b9c3 (diff) | |
| parent | 5bae7ac9feba925fd0099057f6b23d7be80b7b41 (diff) | |
| download | linux-1ff8392c32a2645d2665ca779ecb91bb29361c13.tar.xz | |
Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
fs/cifs/export.c
Diffstat (limited to 'drivers/usb/serial/mct_u232.h')
| -rw-r--r-- | drivers/usb/serial/mct_u232.h | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/usb/serial/mct_u232.h b/drivers/usb/serial/mct_u232.h index 73dd0d984cd3..a61bac8f224a 100644 --- a/drivers/usb/serial/mct_u232.h +++ b/drivers/usb/serial/mct_u232.h @@ -63,14 +63,15 @@ #define MCT_U232_SET_UNKNOWN1_REQUEST 11 /* Unknown functionality */ #define MCT_U232_SET_UNKNOWN1_SIZE 1 -/* This USB device request code is not well understood. It is transmitted by - the MCT-supplied Windows driver whenever the baud rate changes. +/* This USB device request code appears to control whether CTS is required + during transmission. - Without this USB device request, the USB/RS-232 adapter will not write to - RS-232 devices which do not assert the 'CTS' signal. + Sending a zero byte allows data transmission to a device which is not + asserting CTS. Sending a '1' byte will cause transmission to be deferred + until the device asserts CTS. */ -#define MCT_U232_SET_UNKNOWN2_REQUEST 12 /* Unknown functionality */ -#define MCT_U232_SET_UNKNOWN2_SIZE 1 +#define MCT_U232_SET_CTS_REQUEST 12 +#define MCT_U232_SET_CTS_SIZE 1 /* * Baud rate (divisor) @@ -439,7 +440,7 @@ static int mct_u232_calculate_baud_rate(struct usb_serial *serial, int value); * which says "U232-P9" ;-) * * The circuit board inside the adaptor contains a Philips PDIUSBD12 - * USB endpoint chip and a Phillips P87C52UBAA microcontroller with + * USB endpoint chip and a Philips P87C52UBAA microcontroller with * embedded UART. Exhaustive documentation for these is available at: * * http://www.semiconductors.philips.com/pip/p87c52ubaa |