**** BEGIN LOGGING AT Mon Apr 11 02:59:58 2016
Apr 11 12:05:59 <jic23> quiet around here...  Guess it get more lively in a 11 days time!
Apr 11 12:18:42 <av500> yes
Apr 11 12:38:31 <pmezydlo> Can I have one question now? after 22?
Apr 11 12:39:11 <av500> you can ask anything (permitted by your local law)
Apr 11 12:40:23 <pmezydlo> i have a problem. I installed DTS for spi which changes device status. Then i installed driver (insmod driver.ko) but it doesn't recognizes device.
Apr 11 12:41:11 <pmezydlo> the driver must be specifically added (compiled)?
Apr 11 12:46:42 <av500> well .ko is "compiled" already
Apr 11 12:46:56 <av500> where is that driver.ko from?
Apr 11 12:47:08 <av500> also, you can ask such questions in #beagle
Apr 11 12:47:20 <av500> there are way more people there
Apr 11 12:47:27 <av500> also, you can ask such questions also in #beagle
Apr 11 12:48:21 <m_w> it is hard to tell what went wrong without more detailed information
Apr 11 12:52:44 <m_w> my guess is the probe function is not being called because the devicetree binding is not properly specified
Apr 11 12:52:53 <pmezydlo> pls wait a minute, I'm runing my eclipse and i will show you the code
Apr 11 12:56:51 <pmezydlo> code is here: http://pastebin.com/b7Zne3Hk  I'm trying to understand how the platform _device works.
Apr 11 12:58:10 <m_w> ti,omap4-mcspi
Apr 11 12:59:33 <m_w> is this the same binding as the mcspi master driver?
Apr 11 13:01:14 <m_w> if so you will need to make sure that the other driver is not loaded
Apr 11 13:01:18 <pmezydlo> yes, in omap2
Apr 11 13:02:13 <pmezydlo> in  spi-omap2-mcspi.c is line  .compatible = "ti,omap4-mcspi",
Apr 11 13:02:34 <m_w> is that driver loaded on your system?
Apr 11 13:04:33 <m_w> if so then you must rmmod it if it is built as a module
Apr 11 13:05:18 <m_w> otherwise you can unbind the platform resource in the sysfs layer before loading your driver
Apr 11 13:06:07 <pmezydlo> ok, thanks,  the lsmod command doesn't show me all install drivers
Apr 11 13:06:43 <m_w> my guess is the mcspi driver is built in then
Apr 11 13:07:20 <m_w> cd /sys/bus/platform
Apr 11 13:07:45 <m_w> see if you can find the mcspi directory
Apr 11 13:13:26 <pmezydlo> Error: Module omap2_mcspi is not currently loaded
Apr 11 13:13:55 <m_w> what did you run?
Apr 11 13:14:43 <m_w> rmmod?
Apr 11 13:15:37 <m_w> if so this will not work if the driver is built into the kernel
Apr 11 13:15:46 <pmezydlo> yes rmmod
Apr 11 13:16:16 <m_w> so you need to manually unbind the driver
Apr 11 13:16:48 <pmezydlo> i will try
Apr 11 13:17:05 <m_w> /sys/bus/platform/drivers/omap2_mcspi/
Apr 11 13:17:23 <m_w> it should have a unbind virtual file
Apr 11 13:17:42 <m_w> echo the instance name into the unbind file
Apr 11 13:17:50 <m_w> cd /sys/bus/platform/drivers/omap2_mcspi
Apr 11 13:18:13 <m_w> echo omap2_mcspi.1 > unbind
Apr 11 13:18:19 <m_w> or something similar
Apr 11 13:19:42 <m_w> once the unbind is complete try insmod of your driver again
Apr 11 13:21:31 <pmezydlo> ok wait i will try unbind
Apr 11 13:30:34 <pmezydlo> woowowowoowowo, it work
Apr 11 13:31:03 <pmezydlo> my driver only show base address: Start:481a0100,  End:481a04ff Size:1024
Apr 11 13:31:59 <pmezydlo> m_w: thanks very much,
Apr 11 13:33:48 <chanakya_vc> bradfa,I have replied to your comments.I have some doubts.Could you please go through it?
Apr 11 13:33:56 <chanakya_vc> m_w, Hi,are you there?
Apr 11 13:34:36 <bradfa> chanakya_vc: yes, I'll try to go through your comments today, thanks
Apr 11 13:36:35 <chanakya_vc> bradfa,Thanks a lot!! I will definitely work on your suggestions.
Apr 11 13:39:15 <m_w> yup
Apr 11 13:42:26 <m_w> chanakya_vc: Do you have a question?
Apr 11 13:42:48 <chanakya_vc> m_w, Could you please go through my application?The official link that I sent for google docs.If you want to maybe point out something that I may have missed?
Apr 11 13:43:36 <chanakya_vc> chanakya_vc, If that is okay with the rules
Apr 11 13:44:06 <m_w> well the application period is over
Apr 11 13:44:40 <m_w> and the decision for the projects is based on the final PDF
Apr 11 13:45:36 <chanakya_vc> Okay.What I was going for was that If you maybe wanted to get something clarified before the final decision :)
Apr 11 13:46:00 <m_w> let me take a look
Apr 11 13:46:56 <m_w> it does not hurt to refine your goals for your own sake but I don't know that it will effect the decision process much
Apr 11 13:47:25 <m_w> because we are supposed to judge based on the PDF to be fair to all applicants
Apr 11 13:47:41 <chanakya_vc> m_w, I understand that :)
Apr 11 13:53:55 <m_w> I think it is a solid proposal
Apr 11 13:57:01 <chanakya_vc> m_w, Thanks.Nothing you would want me to add/explain more in the google docs?
Apr 11 13:57:18 <m_w> not that I can see
Apr 11 13:58:20 <m_w> but cannot dig too deep though as I have to work to pay my bills :)
Apr 11 13:58:45 <chanakya_vc> okay :)
Apr 11 13:59:39 <m_w> the proposal shows that you understand the problem and the general path to implementation
Apr 11 13:59:59 <m_w> this should be good enough for the decision process
Apr 11 14:01:27 <chanakya_vc> m_w, Actually,there are certain issues which i think were not explained clearly in the final PDF.In a haste,I missed out on correcting some stuff which may give a wrong idea.
Apr 11 14:01:55 <chanakya_vc> But I guess the mentors would know all about that.
Apr 11 14:02:52 <chanakya_vc> So I thought if any mentor required me to explain the stuff a bit more clearly :)
Apr 11 14:04:03 <m_w> what exactly were your areas of concern?
Apr 11 14:06:56 <chanakya_vc> Well I talked to alexhiam  about this.When I talk about writing the drivers,it may appear in the final PDF,that I talk about writing a userland driver.Which is not the case.
Apr 11 14:07:34 <m_w> ah
Apr 11 14:07:49 <chanakya_vc> I corrected this in various places in my application but forgot to edit a paragraph where it is still mentioned.
Apr 11 14:08:23 <m_w> okay noted
Apr 11 14:09:12 <chanakya_vc> It may give a sense that I do not understand the problem.And,I was concerned,because it is a mistake pointed out to me by the mentors.
Apr 11 14:10:43 <chanakya_vc> But alexhiam said that the mentors would take into account that I had corrected this mistake and the fact that I had such a lengthy discussion with so many mentors on this issue
Apr 11 14:11:04 <m_w> yes this is important
Apr 11 14:11:38 <chanakya_vc> So I am hoping that the mentors would take this into consideration while making their decision.
Apr 11 14:13:46 <m_w> It shows that you are committed and will certainly help you when the final projects are selected.
Apr 11 14:15:13 <chanakya_vc> m_w, Okay.If you have time,do go through the ioctls driver I have written:https://github.com/chanakya-vc/BBB-Gsoctry/tree/master/ioctlsdriver
Apr 11 14:16:04 <chanakya_vc> It is not complete.I am still working on observations made by alexhiam.
Apr 11 14:17:00 <m_w> firstly you should conform to the kernel coding style guidelines
Apr 11 14:17:21 <m_w> it is good to start early getting used to this
Apr 11 14:17:39 <m_w> https://www.kernel.org/doc/Documentation/CodingStyle
Apr 11 14:18:54 <bradfa> chanakya_vc: I've left some comments :)
Apr 11 14:20:46 <chanakya_vc> bradfa, I will go through them.And make the necessary changes.Thanks a lot :)
Apr 11 14:21:13 <chanakya_vc> bradfa, Would it be okay if I did that by Thursday?Or you would want it before?
Apr 11 14:22:33 <chanakya_vc> m_w, I will go through it.Otherwise what do you think of the code?
Apr 11 14:23:13 <m_w> does it compile?
Apr 11 14:23:27 <m_w> https://github.com/chanakya-vc/BBB-Gsoctry/blob/master/ioctlsdriver/query_ioctldriver.c#L9
Apr 11 14:23:46 <m_w> there are missing semicolons
Apr 11 14:24:45 <bradfa> chanakya_vc: I have no deadline, as m_w said the official google evaluation is based on the PDF, I'm just happy to help to clarify things in google docs :)
Apr 11 14:25:02 <chanakya_vc> Yes there are certain issues.I have not yet updated the latest version in which I corrected this.
Apr 11 14:25:32 <chanakya_vc> syntax issues. and the makefile.
Apr 11 14:25:55 <chanakya_vc> bradfa:Thanks.I will look through it.
Apr 11 14:26:29 <chanakya_vc> m_w, And whitespace issues.I guess we have some program to avoid it?
Apr 11 14:26:46 <m_w> there are a few
Apr 11 14:26:54 <chanakya_vc> Apart from manually eliminating them.
Apr 11 14:26:59 <m_w> there is lindent
Apr 11 14:27:15 <m_w> there is a vim plugin
Apr 11 14:27:43 <m_w> there is checkpatch to check the syntax
Apr 11 14:28:15 <m_w> if you ran checkpatch you would see lots of errors
Apr 11 14:28:28 <alexhiam> chanakya_vc: what editor are you using?
Apr 11 15:19:42 <chanakya_vc> m_w, Okay got that.So I could use checkpatch to check for syntax errors before I compile it?It is very difficult to manually correct all the errors.
Apr 11 15:19:52 <chanakya_vc> alexhiam, Sublime text editor
Apr 11 15:20:35 <chanakya_vc> Does checkpatch work with all the editors?
Apr 11 15:20:47 <alexhiam> sublime does pretty good with white space in my experience
Apr 11 15:21:08 <alexhiam> there's some settings you can tweak, like spaces/tab
Apr 11 15:21:41 <chanakya_vc> Okay.I never really checked it out.
Apr 11 15:21:56 <alexhiam> checkpatch just looks at the file, has nothing to do with the editor
Apr 11 15:22:05 <chanakya_vc> been only doing competitive coding before this so :)
Apr 11 15:22:29 <chanakya_vc> Okay.So any .h or.c file ?
Apr 11 15:22:54 <chanakya_vc> Like it is an IDE or something?
Apr 11 15:23:05 <alexhiam> what? checkpatch?
Apr 11 15:23:21 <alexhiam> it's just a pearl script that checks your patch to make sure it adheres to the Linux standards
Apr 11 15:24:41 <chanakya_vc> Okay.So it would show many errors in my case,as m_w pointed out,I have not adhered to the linux standards.
Apr 11 15:25:10 <chanakya_vc> It would also show syntax errors?
Apr 11 15:25:37 <alexhiam> no, gcc shows you those
Apr 11 15:26:29 <chanakya_vc> But to compile modules,we cannot straight away use gcc,can we?
Apr 11 15:26:51 <chanakya_vc> like we would have to use certain flags or something right?
Apr 11 15:27:07 <alexhiam> not sure what you mean..
Apr 11 15:27:13 <alexhiam> you just need to have the kernel source
Apr 11 15:28:14 <chanakya_vc> for normal  programs we straightaway write gcc helloworld.c and then do ./a.out for the program to run.
Apr 11 15:28:33 <alexhiam> no, that only works for very simple single file programs
Apr 11 15:28:50 <alexhiam> usually you have a Makefile that describes all the steps
Apr 11 15:29:18 <alexhiam> gcc can't guess what you want to do
Apr 11 15:30:09 <chanakya_vc> Yes got that.We would have to write the makefile.
Apr 11 15:30:53 <chanakya_vc> That takes (me atleast) some time to correct all the errors.
Apr 11 15:31:36 <chanakya_vc> For me it is worse,because I did not know how to correctly write the makefile.I am still reading the link you gave me.
Apr 11 15:32:27 <alexhiam> there's a lot of info there - personally I learn that kind of stuff best by doing it
Apr 11 15:35:40 <chanakya_vc> Okay.I have understood the basics.Probably a couple of days more before I could write the makefile for the driver.
Apr 11 15:36:45 <alexhiam> don't you already have it?
Apr 11 15:38:03 <chanakya_vc> alexhiam, Well you did help by giving the makefile.But I would prefer If I could come up with it all on my own with my basics completely clear.
Apr 11 15:38:59 <alexhiam> right. well the changes I made were just about the userspace program
Apr 11 15:40:24 <chanakya_vc> Like I read makefile of a similar driver on the net and understood what it did.But I don't feel comfortable unless I know what exactly is happening in the background.
Apr 11 15:41:54 <alexhiam> in that case I'd recommend googling something more specific than that gnu doc, you don't need to learn every corner of make all at once
Apr 11 15:42:57 <chanakya_vc>  Okay will do that. Anyway,would you like to see any other piece of code before the final decision comes in?
Apr 11 15:43:47 <alexhiam> chanakya_vc: I can't think of anything
Apr 11 15:44:05 <chanakya_vc> I am working on the blinky code. Actually ,i have a lot of work in college so I have been kind of slow in doing stuff :)
Apr 11 15:45:27 <chanakya_vc> And I have still not submitted the cross compiled hello world program.Will that be a problem?I will submit it as soon as I can.
Apr 11 15:45:48 <alexhiam> you should do that asap
Apr 11 15:45:55 <alexhiam> it shouldn't take long
Apr 11 15:46:22 <chanakya_vc> Okay so a pull request to jkridner's github ?
Apr 11 15:46:26 <alexhiam> yup
Apr 11 15:46:45 <chanakya_vc> Will do it tonight itself.
Apr 11 15:52:16 <m_w> chanakya_vc: is used to prepare patches for mainline submission
Apr 11 15:52:45 <m_w> but it is good to use it to find style problems in a new driver
Apr 11 15:55:08 <m_w> sublime has some formatting tools
Apr 11 15:55:17 <m_w> https://github.com/timonwong/SublimeAStyleFormatter
Apr 11 15:58:22 <m_w> I misspoke eariler checkpatch checks for style errors not syntax
Apr 11 15:59:02 <m_w> lindent is the probably the easiest way to fix many things at once
Apr 11 15:59:50 <m_w> https://ruckuus.wordpress.com/2010/03/15/lindent-amazing-script-for-lazy-c-coder/
Apr 11 17:08:23 <chanakya_vc> m_w, Toh I can use Lindent to fix whitespace right?I will look at the link you gave.
Apr 11 17:20:43 <ZeekHuge> hey jic23 !
Apr 11 20:31:35 <chanakya_vc> alexhiam, jkridner Could you please give me the link to your github account?I need to make a pull request for the hello world program.
Apr 11 20:32:04 <jkridner> chanakya_vc: I believe it is simply in the instructions.
Apr 11 20:33:11 <chanakya_vc> jkridner The ones that you have put in the google group?
Apr 11 20:33:26 <chanakya_vc> I will check sir.
Apr 11 20:42:33 <chanakya_vc> jkridner, https://github.com/jadonk/gsoc-application/tree/master/ExampleEntryJasonKridner. This is the link?
Apr 11 20:54:13 <m_w> chanakya_vc: yes that is the purpose.
Apr 11 20:54:27 <m_w> chanakya_vc: sorry for the delay
Apr 11 20:54:35 <m_w> busy day at work
Apr 11 20:57:28 <chanakya_vc> m_w, No problem.I can imagine how difficult it must for mentors to manage work and gsoc. :)
Apr 11 20:58:32 <chanakya_vc> m_w, I will take a look at the link you gave and get back to you.
Apr 11 20:59:33 <m_w> it is very simple
Apr 11 21:19:14 <chanakya_vc> jkridner, alexhiam m_w I have created a pull request for the hello world program.Please take a look.
Apr 11 21:19:58 <chanakya_vc> I have checked the .bin file to be working on the BBB.
Apr 11 21:20:34 <chanakya_vc> m_w, Okay.I still have to read the kernel coding standards,I guess.
Apr 11 21:25:14 <ZeekHuge> chanakya_vc: still up ?
Apr 11 21:29:40 <chanakya_vc> ZeekHuge, Yes.Just had to complete the hello world task
Apr 11 21:30:08 <ZeekHuge> oh .. ohk. What cross compiler did you use ?
Apr 11 21:32:31 <ZeekHuge> chanakya_vc: ^^
Apr 11 21:34:29 <alexhiam> chanakya_vc: that tab on the first line of your Makefile shouldn't be there
Apr 11 21:34:35 <chanakya_vc> ZeekHuge, gnueabi
Apr 11 21:35:13 <ZeekHuge> chanakya_vc: and whats the kernel on you BBB ?
Apr 11 21:35:20 <ZeekHuge> *your
Apr 11 21:36:20 <chanakya_vc> alexhiam, Problem in uploading it maybe.Working fine on BBB. I will rectify it immediately.
Apr 11 21:36:49 <chanakya_vc> alexhiam, I ran the .bin file on the BBB.
Apr 11 21:37:16 <alexhiam> make doesn't seem to mind, but it's not technically correct
Apr 11 21:38:06 <chanakya_vc> whitespace issues ?
Apr 11 21:38:38 <chanakya_vc> ZeekHuge, 3.8.13
Apr 11 21:39:01 <chanakya_vc> ZeekHuge, I did uname-R
Apr 11 21:39:42 <chanakya_vc> ZeekHuge, You are working with the latest image I presume?
Apr 11 21:41:40 <ZeekHuge> yeah ..
Apr 11 21:43:03 <ZeekHuge> alexhiam: how can we check if the kernel supports hard-float or not ?
Apr 11 21:44:19 <alexhiam> idk.. http://raspberrypi.stackexchange.com/questions/4677/how-can-i-tell-if-i-am-using-the-hard-float-or-the-soft-float-version-of-debian ?
Apr 11 21:44:26 <ds2> kernel?!
Apr 11 21:44:30 <chanakya_vc> alexhiam, Rectified it.
Apr 11 21:44:32 <ds2> hard float or not has little to do with the kernel
Apr 11 21:44:46 <ds2> hardfoat/softfloat is a userland artifact
Apr 11 21:45:57 <alexhiam> ds2: the kernel doesn't use hardfloat? Or is that a totally separate switch?
Apr 11 21:47:23 <ZeekHuge> ds2: actually I tried to use gnueabi cross-compiler but that didnt work for me. I then used gnueabihf and it was working fine. While with others its opposite.
Apr 11 21:47:24 <ds2> kernel doesn't care
Apr 11 21:47:51 <ds2> ZeekHuge: as long as your "program" is consistant (or you have special thunks), you can use either
Apr 11 21:48:07 <ds2> the complication is typically programs are dynamically linked which means you got to match what shlibs are on the system
Apr 11 21:48:31 <ds2> with glibc, it is not possible to generate a true static bin, hence all the rumors floating around
Apr 11 21:48:38 <ZeekHuge> but even with that hello program, gnueabi didnt work.
Apr 11 21:48:43 <ds2> what did it do?
Apr 11 21:48:45 <ds2> segfault?
Apr 11 21:48:59 <ds2> start a fire? sit there looking stupid?
Apr 11 21:49:12 <ZeekHuge> no, ahh .. I think it was something like unsupported format or something.
Apr 11 21:49:21 <ds2> unsupported format?!
Apr 11 21:49:31 <ds2> please show me the output and the compilation you did
Apr 11 21:49:47 <ZeekHuge> .. I ahh dont remember ..
Apr 11 21:49:54 <ZeekHuge> yep, just a sec please.
Apr 11 21:54:57 <ZeekHuge> ds2: ohk so gnueabi compiled code says : -bash: ./helloGnueabi.bin: No such file or directory
Apr 11 21:55:21 <ds2> you are missing the ld so your tool chain put in
Apr 11 21:55:22 <ZeekHuge> the compilation process is clear, no warnings or errors.
Apr 11 21:55:27 <ds2> try adding "-static"
Apr 11 21:55:35 <ds2> that should eliminate ldso
Apr 11 21:57:39 <ZeekHuge> ds2: well, ahh yeah .. that did work.
Apr 11 21:57:55 <ds2> what did that do?
Apr 11 21:58:26 <ZeekHuge> I mean... yes it worked. It printed the "hello" thing.
Apr 11 21:58:42 <ds2> 'k
Apr 11 21:58:52 <ZeekHuge> whats with the linker ? why is it required to link it statically ?
Apr 11 21:59:26 <ZeekHuge> ds2: ^^
Apr 11 21:59:26 <ds2> which linker are you asking about?
Apr 11 21:59:31 <ds2> there are 2 links in play here
Apr 11 22:20:24 <ds2> hmmm
Apr 11 23:46:25 <m_w> the logs stopped working again
Apr 11 23:47:10 <Abhishek_> there's Slack and gitter keeping logs as well
Apr 11 23:47:24 <m_w> yeah just saying
Apr 12 00:34:55 <nerdboy> do we have a logbot?
Apr 12 00:35:11 <nerdboy> *not counting the slacker over there  =>
**** ENDING LOGGING AT Tue Apr 12 02:59:58 2016