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authorJohan Hovold <jhovold@gmail.com>2010-03-17 23:05:57 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2010-05-20 13:21:34 -0700
commit231543206452f5c42bace54b5c13dfe5a0313812 (patch)
treecbefc56d6c37f50c895a37c47161ac5733cda24c /include
parent0f3d5bae2bdacce6c6c1d116809d6b3d50338df7 (diff)
USB: serial: generalise generic read implementation
Add process_read_urb to usb_serial_driver so that a driver can rely on the generic read (and throttle) mechanism but still do device specific processing of incoming data (such as adding tty_flags before pushing to line discipline). The default generic implementation handles sysrq for consoles but otherwise simply pushes to tty. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include')
-rw-r--r--include/linux/usb/serial.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index 53f6dc65e87..ff8872eba3a 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -272,6 +272,8 @@ struct usb_serial_driver {
void (*write_int_callback)(struct urb *urb);
void (*read_bulk_callback)(struct urb *urb);
void (*write_bulk_callback)(struct urb *urb);
+ /* Called by the generic read bulk callback */
+ void (*process_read_urb)(struct urb *urb);
};
#define to_usb_serial_driver(d) \
container_of(d, struct usb_serial_driver, driver)
@@ -323,6 +325,7 @@ extern int usb_serial_generic_register(int debug);
extern void usb_serial_generic_deregister(void);
extern int usb_serial_generic_submit_read_urb(struct usb_serial_port *port,
gfp_t mem_flags);
+extern void usb_serial_generic_process_read_urb(struct urb *urb);
extern int usb_serial_handle_sysrq_char(struct tty_struct *tty,
struct usb_serial_port *port,
unsigned int ch);