Am Montag 30 Juli 2007 schrieb [EMAIL PROTECTED]:
> Hi Greg,
>
> After a new complete reading of my code against usb-serial.c, I finally
> found ( I hope ) my problem.
> In usb-serial.c, when bulk_in/out buffers are initialized, each buffer size
> are the same as the wMaxPacketSize given by the endpoint.
> So, in my case, my device have a value of 64 bytes and I send and receive
> bulk data that might have 256 bytes length !!! And like pl2303, I just copy
> the user data to port->write_urb->transfer_buffer.
You have a problem. Does this extension of the API help you?
Regards
Oliver
--
--- a/include/linux/usb/serial.h 2007-07-30 12:19:39.000000000 +0200
+++ b/include/linux/usb/serial.h 2007-07-30 12:19:46.000000000 +0200
@@ -201,6 +201,7 @@ static inline void usb_set_serial_data (
struct usb_serial_driver {
const char *description;
const struct usb_device_id *id_table;
+ int buffer_size;
char num_interrupt_in;
char num_interrupt_out;
char num_bulk_in;
--- a/drivers/usb/serial/usb-serial.c 2007-07-30 12:20:11.000000000 +0200
+++ b/drivers/usb/serial/usb-serial.c 2007-07-30 12:20:15.000000000 +0200
@@ -866,7 +866,7 @@ int usb_serial_probe(struct usb_interfac
dev_err(&interface->dev, "No free urbs available\n");
goto probe_error;
}
- buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+ buffer_size = type->buffer_size ? type->buffer_size :
le16_to_cpu(endpoint->wMaxPacketSize);
port->bulk_in_size = buffer_size;
port->bulk_in_endpointAddress = endpoint->bEndpointAddress;
port->bulk_in_buffer = kmalloc (buffer_size, GFP_KERNEL);
@@ -890,7 +890,7 @@ int usb_serial_probe(struct usb_interfac
dev_err(&interface->dev, "No free urbs available\n");
goto probe_error;
}
- buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+ buffer_size = type->buffer_size ? type->buffer_size :
le16_to_cpu(endpoint->wMaxPacketSize);
port->bulk_out_size = buffer_size;
port->bulk_out_endpointAddress = endpoint->bEndpointAddress;
port->bulk_out_buffer = kmalloc (buffer_size, GFP_KERNEL);
@@ -915,7 +915,7 @@ int usb_serial_probe(struct usb_interfac
dev_err(&interface->dev, "No free urbs
available\n");
goto probe_error;
}
- buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+ buffer_size = type->buffer_size ? type->buffer_size :
le16_to_cpu(endpoint->wMaxPacketSize);
port->interrupt_in_endpointAddress =
endpoint->bEndpointAddress;
port->interrupt_in_buffer = kmalloc (buffer_size,
GFP_KERNEL);
if (!port->interrupt_in_buffer) {
@@ -942,7 +942,7 @@ int usb_serial_probe(struct usb_interfac
dev_err(&interface->dev, "No free urbs
available\n");
goto probe_error;
}
- buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+ buffer_size = type->buffer_size ? type->buffer_size :
le16_to_cpu(endpoint->wMaxPacketSize);
port->interrupt_out_size = buffer_size;
port->interrupt_out_endpointAddress =
endpoint->bEndpointAddress;
port->interrupt_out_buffer = kmalloc (buffer_size,
GFP_KERNEL);
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