Re: [PATCH] staging: axis-fifo: initialize timeouts in probe only

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On Wed, Mar 15, 2023 at 09:09:16AM -0700, Alison Schofield wrote:
> On Wed, Mar 15, 2023 at 07:22:39PM +0500, Khadija Kamran wrote:
> > On Wed, Mar 15, 2023 at 02:34:31PM +0100, Fabio M. De Francesco wrote:
> > > Aside from what I said and asked for with the other message of this same 
> > > thread, please take note that you can build a specific module if you prefer 
> > > not to re-build the whole kernel and other modules at the same time. 
> > > 
> > > I'm pretty sure that the instructions to do so are in the OutreachyFirstPatch 
> > > tutorial.
> > > 
> > > If they are not there, please let us know.
> > > 
> > > Fabio
> > 
> > Hey Fabio!
> > 
> > In the Outreachy FirstPatchTutorial under the 'Compiling only part of
> > the kernel' section there are ways to compile only some part of the
> > kernel.
> > 
> > I have tried using "make W=1 drivers/staging/axis-fifo/" and it says
> > 'nothing to be done for'. 
> > 
> > Should I start with the steps to reproduce? :'(
> 
> Khadija,
> 
> I've applied your patch and it fails to compile with the warnings
> that LKP reports.
> 
> If you are doing: $ make drivers/staging/axis-fifo/
> 
> and it is saying 'nothing to be done...'
> 
> You either have not changed anything since the last compile, or you
> do not have the module configured.
>

Hey Alison!
I might've written the statement wrong. Actually, here is the output of
make drivers/staging/axis-fifo

YACC    scripts/genksyms/parse.tab.[ch]
  HOSTCC  scripts/genksyms/parse.tab.o
  HOSTCC  scripts/genksyms/lex.lex.o
  HOSTLD  scripts/genksyms/genksyms
  CC      scripts/mod/empty.o
  MKELF   scripts/mod/elfconfig.h
  HOSTCC  scripts/mod/modpost.o
  CC      scripts/mod/devicetable-offsets.s
  HOSTCC  scripts/mod/file2alias.o
  HOSTCC  scripts/mod/sumversion.o
  HOSTLD  scripts/mod/modpost
  CC      kernel/bounds.s
  CC      arch/x86/kernel/asm-offsets.s
  CALL    scripts/checksyscalls.sh
  DESCEND objtool
  INSTALL libsubcmd_headers
  DESCEND bpf/resolve_btfids
  INSTALL libsubcmd_headers
make[3]: Nothing to be done for 'drivers/staging/axis-fifo/'.


> I suspect it has never compiled for you and you need to look at
> the direction in the tutorial for 'Recompiling the driver' section
> and learn how to use make menuconfig.
> 
> This driver has a couple of dependencies described in the Kconfig
> file. You will not even see the 'XIL_AXIS_FIFO' option until you
> turn on 'OF' and HAS_'IOMEM'.
> 
> See the drivers/staging/axis-fifo/Kconfig
> 
> Please confirm that you have compiled the driver before chasing
> after the build env that lkp reports.
> 
> Thanks,
> Alison

Sorry, I made a mistake here.

I did not change the driver 'Xilinx AXI-Stream FIFO IP core driver' to
being compiled as a module by typing 'm'.
Is that the problem here?

Also, now when I try to change it by pressing 'm', it is not working.
And I have tried many times but I cannot change the driver from '*' to
'm'.

Kindly help me with this.

Regards,
Khadija






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