[PATCH] usb: Fix switch statement in ohci-tmio.c

Nick Krause xerofoify at gmail.com
Thu Aug 14 22:42:15 EDT 2014


On Thu, Aug 14, 2014 at 10:29 PM, Nick Krause <xerofoify at gmail.com> wrote:
> On Thu, Aug 14, 2014 at 10:16 PM, Greg Freemyer <greg.freemyer at gmail.com> wrote:
>> On Thu, Aug 14, 2014 at 7:46 PM, Nick Krause <xerofoify at gmail.com> wrote:
>>> On Thu, Aug 14, 2014 at 6:12 PM, Nick Krause <xerofoify at gmail.com> wrote:
>>>> On Thu, Aug 14, 2014 at 5:38 PM,  <Valdis.Kletnieks at vt.edu> wrote:
>>>>> On Thu, 14 Aug 2014 17:13:28 -0400, Nick Krause said:
>>>>>> I am learned C. Perhaps I am a little rusty and need to review.
>>>>>
>>>>> We've seen very little evidence that you *ever* really understood C
>>>>> at all, and you're *far* from "a little rusty".  It's been some 23
>>>>> years since I've hacked any code in IBM's Pascal/VS, and 29 since I
>>>>> had to do maintenance work on PL/I code, and I *still* remember more
>>>>> of those than you remember of C.  (I'll admit that my mad Snobol4 skilz
>>>>> have pretty much evaporated, though ;)
>>>>>
>>>>> http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
>>>>  I learned C like two years ago and never really practiced it that
>>>> much to be honest.
>>>>  In addition I will come back in the future about I have read The C Programming
>>>>  Language.
>>>> Cheers Nick
>>> Thanks for pointing me in the right direction , I really do need to
>>> brush up on my C.
>>> Sorry for wasting your time.
>>> Nick
>>
>> Nick,
>>
>> The linux kernel has some of the most complex c code on the planet.
>> It is seriously not a place to "brush-up", "practice", or "learn".
>>
>> A few _years_ of current c experience is pretty much a must to truly
>> grok the kernel.  Once you have that as a base, then it takes a lot of
>> real study to comprehend the complex use cases used in the linux
>> kernel.
>>
>> I suggest you find a userspace project and work with it for a year or
>> two before you jump back into the kernel.  Personally, I find the
>> libyal family of userspace c libraries interesting.  The code base is
>> much smaller, but works with filesystems and is has multi-threaded
>> needs.  The main author is crazy smart (works for Google), so I'm not
>> saying he needs your help.  I'm saying the code base is small enough
>> you might be able to get your arms around it and really understand it.
>> That can help you understand the data structures used in filesystems,
>> complex volume systems, and encryption.
>>
>> https://code.google.com/p/libyal/wiki/Overview
>>
>> You said you have an interest in filesystems (as do I).
>>
>> Looking at the filesystem section of that overview a couple of his
>> targeted libraries haven't even been started yet.  You code will
>> likely be throwaway code for your first effort or two, but
>> File systems
>>
>> Several libraries for different types of filesystems don't even have code yet.
>>
>> libfsclfs; Common Log File System (CLFS) format
>> libfshfs; Hierarchical File System (HFS) format - at the moment
>> documentation only
>> libfsntfs; New Technology File System (NTFS) format - at the moment
>> documentation only
>> libfsrefs; Resilient File System (ReFS) format - at the moment
>> documentation only
>>
>> For me, if I was trying to learn about filesystems, that would be a
>> fun way to hack away at new code.  Also, libyal has lots of low level
>> libraries you can build upon so your not starting from scratch.
>> Further there are lots of "tools" written that provide high-level
>> end-user applications.
>>
>> If you'd rather look at volumes (similar to device mapper code), there
>> are these projects:
>>
>> libbde; BitLocker drive encryption (BDE)
>> libfvde; FileVault drive encryption (FVDE)
>> libluksde; LUKS Disk Encryption - at the moment documentation only
>> libvslvm; Linux Logical Volume Manager (LVM) volume system format - at
>> the moment documentation only
>> libvshadow; Volume Shadow Snapshot (VSS) format
>> libvslibs; several libraries for different types of volume systems. -
>> at the moment documentation only
>>
>> Or maybe you'd like to learn about virtual disks such as VMs use:
>>
>> Image formats
>>
>> Several libraries for accessing different types of storage media:
>>
>> libodraw; optical disc (split) RAW image format (bin/cue, iso/cue)
>> libsmdev; storage media devices
>> libsmraw; (split) RAW image format
>> libewf; Expert Witness Compression Format (EWF) image format
>> libqcow; QEMU Copy-On-Write (QCOW) image format
>> libvhdi; Virtual Hard Disk (VHD) image format
>> libvmdk; VMware Virtual Disk (VMDK) format
>>
>> FYI: I maintain many of the above for openSUSE and have the packages
>> in the main distro.  My to do list for this weekend is to package up
>> libqcow, libvhdi, and libvmdk.  That being my weekend plan is why I
>> have libyal in my head at the moment.
>>
>> Greg
> Greg,
> Thats very understandable I will  look into something else for now.
> Nick
I am going to work with postrqesql for now and learn from there.
Nick



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