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Alex Rivera
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I m bit confused by the following statement in linux device drivers book. http://www.linuxdriver.co.il/ldd3/ 13.2. USB and Sysfs To help understand what this long device path means, we describe how the kernel labels the USB devices. The first USB device is a root hub. This is the USB controller, usually contained in a PCI device. The controller is so named because it controls the whole USB bus connected to it. The controller is a bridge between the PCI bus and the USB bus, as well as being the first USB device on that bus. Especially the statement "The controller is a bridge between the PCI bus and the USB bus" Is it so? I m under the impression that PCI and USB are both distinct Buses. Please clarify.
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