How To Troubleshoot Kernel USB Module

It’s worth reading these fixing tips if you’re getting a USB kernel module error code on your PC.

The main idea of ​​​​the new driver is message passing, the sentiment itself is called the USB Request Block, abbreviated as URB. The URB consists of all the relevant information that will execute any USB transaction and recreate the data and state.

</p> <nav aria-label="Top navigation"> Linux kernel </nav> <div> <div> <div itemscope="itemscope" itemtype="http://schema.org/Article" role="main"> <div itemprop="itemBody"> <div> <dl> <dt>Author</dt> <p><tt><br /></p> <p>Greg Linux Croah-Hartman</p> </dd> </dl> <div> <h2 id="10"><span class="ez-toc-section" id="Introduction%C2%B6"></span>Introduction¶<span class="ez-toc-section-end"></span></h2> <p></p> <div style="box-shadow: rgba(0, 0, 0, 0.18) 0px 2px 4px;padding:20px 10px 20px 10px;"> <p><h2 id="3"><span class="ez-toc-section" id="How_do_I_create_a_custom_USB_driver"></span>How do I create a custom USB driver?<span class="ez-toc-section-end"></span></h2> <p>Step 8: Generate the UMDF driver code using the Visual Studio 2019 USB Driver template.Step 2: Edit our INF file to add information about your device.Step 3: Generate any USB client driver code.A few steps: Set up a computer for testing and debugging.Step 5: Enable tracing for kernel debugging.</p> </div> <p>The USB subsystem only supports two different subsystems.Device types in kernel 2.2.7 (mouses and keyboards), more than 20different people from devices in kernel 2.4. Currently supports Linuxalmost any USB device in your class (standard device types such as keyboards,mice, modems, printers, and speakers), as well as an ever-increasing number ofmanufacturer-specific peripherals (for example, USB-to-Serial converters,cameras, Ethernet devices, and MP3 players). Full listvarious currently supported USB devices, see Resources.</p> <p><img onerror="this.src='https://codenerd.org/wp-content/uploads/2021/11/1pixel.jpg'" src="http://www.linux-usb.org/USBMon/dissertation/USB-dissertation_files/image004.png" style="margin-top:20px; margin-bottom:20px; display: block; margin: 0 auto;" alt="kernel module usb"></p> <p>Non-Linux USB device types that are still available,almost all devices of a particular manufacturer. Each manufacturer choosesproprietary protocol to communicate with your device, so a dedicated driver is usually usedmust be created. Some vendors openly use their USB protocols andhelp build linux drivers before others ever come outthem, and the developers inNeed to reconstruct them. See resources forsome links to useful reverse engineering tools.</p> <p>Because every other standard protocol results in a new driver, Iwrote a generic USB driver skeleton modeled after thispci-skeleton.c Computer file in the kernel source tree related to many PCIsRandom network drivers. This USB skeleton will be able to finddrivers/usb/usb-skeleton.c kernel tracking tree. In this article Igo through and explain the basics of Bone Structure Drivervarious parts and things that need to be done to make it fit your needsspecific device.</p> </div> <div> <h2 id="11"><span class="ez-toc-section" id="Linux_Basics_For_USB%C2%B6"></span>Linux Basics For USB¶<span class="ez-toc-section-end"></span></h2> <div style="box-shadow: rgba(0, 0, 0, 0.18) 0px 2px 4px;padding:20px 10px 20px 10px;"> <p><h2 id="1"><span class="ez-toc-section" id="How_does_Linux_handle_USB_devices"></span>How does Linux handle USB devices?<span class="ez-toc-section-end"></span></h2> <p>The Linux kernel supports the main types of USB drivers: male and female on the host system, and male and female on the device. The USB host staff manages the USB devices connected to it from the perspective of the host (a typical USB host is a desktop computer, of course).</p> </div> <p></p> <p>If you want to write another USB driver for Linux, check outwith the USB protocol specification. It may be found in manySee the USB Home Web publication for more construction materials (see Resources). BUTgreat introduction to linux, the usb subsystem can be installed onList of working USB devices (see Resources). This explains how USB LinuxThe subsystem is structured and introduces each drive to the concept of USB.urbs (USB request blocks) associated with the driverUSB.</p> <p></p> <div style="box-shadow: rgba(0, 0, 0, 0.18) 0px 2px 4px;padding:20px 10px 20px 10px;"> <p><h2 id="2"><span class="ez-toc-section" id="How_do_I_find_USB_drivers_in_Linux"></span>How do I find USB drivers in Linux?<span class="ez-toc-section-end"></span></h2> <p>$lsub.$dmessage$dmesg | less.$ USB devices.$lsblk.$ sudo blkid.$ sudo fdisk -l.</p> </div> <p>The first thing the Linux USB driver needs to do is register itself.Linux USB subsystem provides relevant device informationthe driver supports and the functions are called if the computer is supportedinserted by the driver and removed from the system. All thisThe information is transferred to the USB in the <code>usb_driver</code> subsystem.Structure. The Bones driver declares <code>usb_driver</code>, for example:</p> <div> <div><img onerror="this.src='https://codenerd.org/wp-content/uploads/2021/11/1pixel.jpg'" src="/posts/kernel-module-usb.png" style="margin-top:20px; margin-bottom:20px; width: 50%; height: auto; display: block; margin: 0 auto;" alt="kernel module usb"></p> <pre>static structure usb_driver skel_driver = .make = "skeleton", .probe implies skel_probe, .disconnect implies skel_disconnect, .suspend is equal to skel_suspend, .resume = skel_resume, .pre_reset = skel_pre_reset, .post_reset = skel_post_reset, .id_table = skeleton_table, .supports_autosuspend=1,;</pre> </div> </div> <p><iframe loading="lazy" style="margin-top:20px; margin-bottom:20px; display: block; margin: 0 auto;" width="560" height="315" src="https://www.youtube.com/embed/5IDL070RtoQ" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe></p> <p>The variable name is usually a string describing the vehicle. It is used inInformational messages appear in the system log. probe andPartition function pointers are called before the device that matchesInformation provided in <code>id_table</code> is frequently found or changedremoved.Fops</p> <p>Minor aspects and are optional. Most USB drivers are connectedare looking forward toanother kernel subsystem, such as a new SCSI subsystem, network, or TTY.These types of drivers are registered by kernel number.The subsystem, and all userspace love relationships are provided by itInterface. But on behalf of drivers that do not have a corresponding kernel subsystem,like MP3 players or just scanners, a way to communicate with user spacenecessary. The USB subsystem allows you to connect to a lower level device.Number and set of <code>file_operations</code> function pointers that activate multipleit is the interaction of the user with the space. The skeleton driver should have something like thisInterface, it prominently shows a small bib and a better indication of its<code></p> </p> </p> <p><a href="https://codenerd.org/nl/problemen-met-usb-kernelmodule-oplossen/" class="translate">Kernel Module Usb</a><br /> <a href="https://codenerd.org/fr/comment-enfin-depanner-le-module-usb-du-noyau/" class="translate">Module De Noyau Usb</a><br /> <a href="https://codenerd.org/it/come-risolvere-i-problemi-del-modulo-usb-del-kernel/" class="translate">Modulo Del Kernel Usb</a><br /> <a href="https://codenerd.org/de/so-konnen-sie-probleme-mit-dem-kernel-usb-modul-beheben/" class="translate">Kernel Modul Usb</a><br /> <a href="https://codenerd.org/sv/hur-man-felsoker-kernel-usb-modul/" class="translate">Karnmodul Usb</a><br /> <a href="https://codenerd.org/ru/%d0%ba%d0%b0%d0%ba-%d1%83%d1%81%d1%82%d1%80%d0%b0%d0%bd%d0%b8%d1%82%d1%8c-%d0%bd%d0%b5%d0%bf%d0%be%d0%bb%d0%b0%d0%b4%d0%ba%d0%b8-usb-%d0%bc%d0%be%d0%b4%d1%83%d0%bb%d1%8f-%d1%8f%d0%b4%d1%80%d0%b0/" class="translate">Modul Yadra Usb</a><br /> <a href="https://codenerd.org/pt/como-ajudar-a-solucionar-problemas-do-modulo-usb-do-kernel/" class="translate">Modulo Do Kernel Usb</a><br /> <a href="https://codenerd.org/pl/jak-rozwiazywac-problemy-z-modulem-usb-jadra/" class="translate">Modul Jadra Usb</a></p> <div class="saboxplugin-wrap" itemtype="http://schema.org/Person" itemscope itemprop="author"><div class="saboxplugin-tab"><div class="saboxplugin-gravatar"><img src="https://codenerd.org/wp-content/uploads/nateclift.jpg" width="100" height="100" alt="Nate Clift" itemprop="image"></div><div class="saboxplugin-authorname"><a href="https://codenerd.org/author/nateclift/" class="vcard author" rel="author" itemprop="url"><span class="fn" itemprop="name">Nate 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