diff options
author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-04 16:25:44 -0800 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-04 16:25:44 -0800 |
commit | c6c88bbde4d8b2ffe9886b7130b2e23781d424e5 (patch) | |
tree | 47c2b61983acc6fbc42d89813729b87bbaf2aed9 /drivers/usb/serial/usb-serial.h | |
parent | 0356dbb7fe87ba59558902e536d9f960e87353c1 (diff) | |
parent | c8dd7709c534ab0d713aa698c99132b6c812b57c (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-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 238a5a871ed..d7d27c3385b 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; |