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| author | Johan Hovold <jhovold@gmail.com> | 2010-03-17 23:00:37 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-05-20 13:21:33 -0700 |
| commit | bbcb2b907415a90334521a31a8767cd77462c716 (patch) | |
| tree | 8ee895f4ee3352a7f57c52c5e99119bc6838edac /include | |
| parent | 317149c655defedfaf432143b86a720cfc12a424 (diff) | |
| download | linux-bbcb2b907415a90334521a31a8767cd77462c716.tar.bz2 | |
USB: serial: allow drivers to define bulk buffer sizes
Allow drivers to define custom bulk in/out buffer sizes in struct
usb_serial_driver. If not set, fall back to the default buffer size
which matches the endpoint size.
Three drivers are currently freeing the pre-allocated buffers and
allocating larger ones to achieve this at port probe (ftdi_sio) or even
at port open (ipaq and iuu_phoenix), which needless to say is suboptimal.
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.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index b7682fed1d9c..ab311dab3383 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -179,6 +179,8 @@ static inline void usb_set_serial_data(struct usb_serial *serial, void *data) * @id_table: pointer to a list of usb_device_id structures that define all * of the devices this structure can support. * @num_ports: the number of different ports this device will have. + * @bulk_in_size: bytes to allocate for bulk-in buffer (0 = end-point size) + * @bulk_out_size: bytes to allocate for bulk-out buffer (0 = end-point size) * @calc_num_ports: pointer to a function to determine how many ports this * device has dynamically. It will be called after the probe() * callback is called, but before attach() @@ -223,6 +225,9 @@ struct usb_serial_driver { struct usb_dynids dynids; int max_in_flight_urbs; + size_t bulk_in_size; + size_t bulk_out_size; + int (*probe)(struct usb_serial *serial, const struct usb_device_id *id); int (*attach)(struct usb_serial *serial); int (*calc_num_ports) (struct usb_serial *serial); |