[ts-7000] Debugging gspca camera driver in lenny, weird behaviour in code.

["lee.weihong" <>]

Hi,

I used a webcam with my TS7800, which was working on sarge before I moved to 
lenny. However, now the webcam (Logitech notebook deluxe) doesn't work with the 
gspca drivers anymore.

To be exact, after enabling debug mode in the drivers and putting a few 
printk(), I observe this:

static void
spca50x_stop_isoc(struct usb_spca50x *spca50x)
{
        printk("Entering spca50x_stop_isoc");
        if (!spca50x->streaming || !spca50x->dev)
                return;
        printk("*** Stopping capture ***");
        /* Rest of code goes here */
}

spca5xx_restartMode(struct usb_spca50x *spca50x, int width, int height, int 
format)
{
        /* Some code here */

        if (was_streaming) {
                if ((spca50x->bridge != BRIDGE_SPCA500)
                    || (spca50x->desc == LogitechClickSmart310)) {
                        printk("restartMode - stop_isoc");
                        spca50x_stop_isoc(spca50x);
                 }
        }

        /* More code here */
}

Now, observing the dmesg output shows the program proceeds into 
spca5xx_restartMode(...), and displays "restartMode - stop_isoc". But the 
spca50x_stop_isoc() never gets called, and the printk message in the very first 
line of spca50x_stop_isoc() never gets displayed. 

Then, the driver hangs, and my userspace program also hangs, becoming 
uninterruptible with ^C. Any helpful members can point out how to patch the 
driver? I have been at this for 2 nights already, pulling my hair out on how 
strange this can be



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