Re: [PATCH V25 0/3] misc: Add driver support for Data Capture and Compare unit(DCC)

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On Mon, Aug 07, 2023 at 11:03:45PM +0530, Souradeep Chowdhury wrote:
> 
> 
> On 8/4/2023 7:19 PM, Greg Kroah-Hartman wrote:
> > On Fri, Aug 04, 2023 at 03:47:26PM +0200, Greg Kroah-Hartman wrote:
> > > On Thu, Aug 03, 2023 at 07:35:18AM -0700, Trilok Soni wrote:
> > > > On 8/3/2023 12:06 AM, Souradeep Chowdhury wrote:
> > > > > 
> > > > > 
> > > > > On 6/28/2023 3:53 PM, Souradeep Chowdhury wrote:
> > > > 
> > > > ...
> > > > 
> > > > > > 
> > > > > > https://git.codelinaro.org/clo/le/platform/vendor/qcom-opensource/tools/-/tree/opensource-tools.lnx.1.0.r176-rel/dcc_parser
> > > > > > 
> > > > > > Changes in v25
> > > > > > 
> > > > > > * Updated the documentation of the structure dcc_config_entry as per
> > > > > > the comments in V23
> > > > > > * Updated the documentation of the dcc Kconfig definition as per
> > > > > > comment in V24
> > > > > > * Used u64 where applicable
> > > > > > * Removed the mutex locks where it is not needed
> > > > > > * Removed the use of unlikely keyword
> > > > > > * Renamed "nr_link_list" to "max_link_list"
> > > > > > 
> > > > > > Souradeep Chowdhury (3):
> > > > > >     dt-bindings: misc: qcom,dcc: Add the dtschema
> > > > > >     misc: dcc: Add driver support for Data Capture and Compare unit(DCC)
> > > > > >     MAINTAINERS: Add the entry for DCC(Data Capture and Compare) driver
> > > > > >       support
> > > > > > 
> > > > > >    Documentation/ABI/testing/debugfs-driver-dcc  |   10 +-
> > > > > >    .../devicetree/bindings/misc/qcom,dcc.yaml    |   44 +
> > > > > >    MAINTAINERS                                   |    8 +
> > > > > >    drivers/misc/Kconfig                          |    8 +
> > > > > >    drivers/misc/Makefile                         |    1 +
> > > > > >    drivers/misc/qcom-dcc.c                       | 1312 +++++++++++++++++
> > > > > >    6 files changed, 1378 insertions(+), 5 deletions(-)
> > > > > >    create mode 100644 Documentation/devicetree/bindings/misc/qcom,dcc.yaml
> > > > > >    create mode 100644 drivers/misc/qcom-dcc.c
> > > > > 
> > > > > Gentle Ping
> > > > 
> > > > Thank you for the reminder Souradeep. Greg and others, please see if we need
> > > > any changes here or it can be picked up?
> > > 
> > > It would help if the code would actually build:
> > > 
> > > drivers/misc/qcom-dcc.c: In function ‘ready_read’:
> > > drivers/misc/qcom-dcc.c:853:13: error: unused variable ‘ret’ [-Werror=unused-variable]
> > >    853 |         int ret = 0;
> > >        |             ^~~
> > > 
> > > {sigh}
> > > 
> > > How in the world was this ever tested?
> > 
> > Ok, next time I want to see some QCOM engineers to sign off on this that
> > it was actually tested and they can back it up that this is ready to be
> > merged.  When the code doesn't even build, that is a huge red flag that
> > this whole thing is being rushed as it obviously was never tested in the
> > form that was submitted for inclusion.
> > 
> > You all know better than this.
> 
> My apologies on missing out on this, it is a W=1 level compilation warning
> that got suppressed on a normal kernel build.

No, not at all, it showed up on my "normal kernel build", I do not have
"W=1" set at all.

If you did a simple "make allmodconfig" I am pretty sure it would have
tripped this.

How exactly was this tested?

thanks,

greg k-h



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