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And you also want to do the same with the kind of subtle timing bugs that can be covered, or uncovered, by the extra work those options cause. You should do all such basic testing with all major Linux host configurations: Or at least borrow the use of a system with such hardware, if you don’t want to own it yourself.
Other than the old usbstress 0. If your hardware supports the host setting an endpoint’s HALT feature, you can run “testusb -at13”. The other is the driver output, which is captured by the “syslog” daemon given an appropriate “syslog. I do inserted the “usbtest” module and while trying to run. If in doubt, try using an OHCI controller on your Linux host; that’s been used most often for such testing so it’s least likely to hide problems.
Usbtest – Texas Instruments Wiki
There’s a user-mode version of that driver, which optionally supports testing for a variety of isochronous transfer rates. Sign up or log in Sign up using Google. Run “testusb -t15” to test iso OUT transfers. The difference is that here the “known good” component is the Linux-USB host, rather than peripheral which is being tested by the host. Here’s output from a test run with an old usbtest driver on a uniprocessor, for two high speed FX2 devices: To EHCI root hubs.
Be sure you set it up correctly ; you may want to use the debug mode, so you can use it in a “removable media” mode or tell it not to require endpoint halts. Run “testusb -t16” to test iso IN transfers. Maybe you can help make these work with “usbtest” or related code.
Some hardware has difficulty halting IN endpoints, so you may need to skip this test. One test for control queuing covers some fault recovery modes. Set up USB test host, running Linux 2.
Although most of these tests will be of interest to folk debugging, developing or maintaining USB system software like controller drivers or device firmware, some may be useful to sysadmins or end users that suspect they may have flakey USB hardware. There are several dozen of these tests, covering your device in both the “A” role default host and the “B” role default peripheral ; so make sure both host and peripheral side stacks work well before you start running these tests.
Tests 11 and 12 aren’t very interesting from the perspective of the peripherals, but they cover some tricky code paths within HCDs and usbcore.
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What did the tests do? Repeat the previous tests using gadgetfs and its usermode test program, to test uzbtest queue depths greater than one.
You can often expect other people in the Linux community to help with those issues, if your software is clean and portable. There are several levels of testing that a Linux host can perform to your usbtesst.
For full function support you must make sure Linux host side applications can use your peripheral, using some kind of device driver s. If you see from the output that some sectors are uabtest, then your USB flash drive is fake.
Com Read The Friendly Manual. For example, both the SCSI and driver model code needed significant hot-unplug bugfixes. Each of those has at least two layers of device drivers to test.
Make sure your driver supports hotplugging. Some devices, like keyboards, mice and network adapters, support “remote wakeup” as a kind of “instant on”, either from a system-wide sleep state or just from the lower-power USB suspend state.
That’s standard in current Linux 2. That’s clearly a good milestone, but it certainly shouldn’t be the last one! Note that once these tests work, you can use the test.