Hello,
This is the most basic code I could think off to
just print out the device descriptor fields.
----------------------------------------------------
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/usb.h>
static void * my_usb_probe
(
struct usb_device *dev,
unsigned int ifnum,
const struct usb_device_id *table
);
static struct usb_driver my_usb_driver =
{
name : "driver",
probe : my_usb_probe
};
static void * my_usb_probe
(
struct usb_device *dev,
unsigned int ifnum,
const struct usb_device_id *table
)
{
dbg("%d %d",dev->descriptor.idVendor,
dev->descriptor.idProduct);
return NULL;
}
int my_driver_init()
{
dbg("in init");
usb_register(&my_usb_driver);
return 0;
}
void my_driver_exit()
{
dbg("in exit");
}
module_init (my_driver_init);
module_exit (my_driver_exit);
-----------------------------------------------------
The module loads and I see "in init" in dmesg but the
values for idVendor and idProduct are wrong. Is there
anything that I am doing wrong here.? I included all
the header files mentioned in usb_skeleton.c and the
module loading gives segmentation fault.
I compile the code using
gcc -c -I/usr/src/linux/include -DDEBUG -D__KERNEL__
-DMODULE my_driver.c
Thanks in advance
Naveen
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