[pwc] V4L2_CID_BRIGHTNESS bug.

[Sander Jansen <>]

If I try to set the brightness of my Logitech Quickcam Pro 3000, the incorrect 
value is set by the driver:

case V4L2_CID_BRIGHTNESS:
        c->value <<= 8;
        ret = pwc_set_brightness(pdev, c->value);

In pwc_set_brightness the value then gets incorrectly set:
        buf = (value >> 9) & 0x7f;

Thanks,
        Sander
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