[yocto] [PATCH] runtime: add BSP test case for usb storage

[Mike Looijmans]

On 24-09-18 23:01, Paul Eggleton wrote:
> On Monday, 24 September 2018 3:02:28 PM NZST Hussin, Mohamad Noor Alim wrote:
...
>>> Otherwise I agree with Mike's reply, we should avoid writing to the storage device as part of the test.
>>
>> It is mean that just do test like mount and unmount only? To read something in storage device we need to write at first place?
> 
> That's true - but you can still do a read test if you make it a precondition of the test
> that you write some known file to the storage device before running the test
> (as part of setup, just as you need to set up the board/device before
> running any tests - you just need to ensure this gets documented somewhere).

You're not testing the USB device, you're testing the USB stack. To do that, 
just reading some data from "/dev/sda" is sufficient. You don't even need to 
mount it. If this works, the stack is okay. If there are transfer errors or 
problems, the USB stack will tell you about it.