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| author | Dmitry Torokhov <dtor_core@ameritech.net> | 2006-01-05 22:25:13 -0500 |
|---|---|---|
| committer | Dmitry Torokhov <dtor_core@ameritech.net> | 2006-01-05 22:25:13 -0500 |
| commit | fed8bf19ec20efc0641740b2d10aa589dbd6d1ab (patch) | |
| tree | c104a13c7b8cb7f4152b15729dc5aede7c063e91 /drivers/usb/serial/usb-serial.h | |
| parent | e7c3aad53dba54d375b632f2a21b680546828dec (diff) | |
| parent | 46f25dffbaba48c571d75f5f574f31978287b8d2 (diff) | |
Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'drivers/usb/serial/usb-serial.h')
| -rw-r--r-- | drivers/usb/serial/usb-serial.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/serial/usb-serial.h b/drivers/usb/serial/usb-serial.h index 238a5a871ed6..d7d27c3385b3 100644 --- a/drivers/usb/serial/usb-serial.h +++ b/drivers/usb/serial/usb-serial.h @@ -16,6 +16,7 @@ #include <linux/config.h> #include <linux/kref.h> +#include <asm/semaphore.h> #define SERIAL_TTY_MAJOR 188 /* Nice legal number now */ #define SERIAL_TTY_MINORS 255 /* loads of devices :) */ @@ -30,6 +31,8 @@ * @serial: pointer back to the struct usb_serial owner of this port. * @tty: pointer to the corresponding tty for this port. * @lock: spinlock to grab when updating portions of this structure. + * @sem: semaphore used to synchronize serial_open() and serial_close() + * access for this port. * @number: the number of the port (the minor number). * @interrupt_in_buffer: pointer to the interrupt in buffer for this port. * @interrupt_in_urb: pointer to the interrupt in struct urb for this port. @@ -60,6 +63,7 @@ struct usb_serial_port { struct usb_serial * serial; struct tty_struct * tty; spinlock_t lock; + struct semaphore sem; unsigned char number; unsigned char * interrupt_in_buffer; |