Thread (66 messages) 66 messages, 15 authors, 2016-09-30

Re: [PATCH 17/26] intel_telemetry_debugfs: constify local structures

From: Darren Hart <dvhart@infradead.org>
Date: 2016-09-30 00:08:00
Also in: lkml, platform-driver-x86

On Thu, Sep 29, 2016 at 07:19:21AM +0200, Julia Lawall wrote:

On Wed, 28 Sep 2016, Darren Hart wrote:
quoted
On Sun, Sep 11, 2016 at 03:05:59PM +0200, Julia Lawall wrote:

Hi Julia,
quoted
For structure types defined in the same file or local header files, find
top-level static structure declarations that have the following
properties:
1. Never reassigned.
2. Address never taken
Hrm. telem_apl_debugfs_conf is passed to the TELEM_DEBUGFS_CPU macro as the
second argument "data":

#define TELEM_DEBUGFS_CPU(model, data) \
	{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, (unsigned long)&data}

And the address is taken, and later assigned to the debugfs_conf pointer.

The usage still seems OK, but did I misunderstand the conditions?
OK, this is definitely a weakness of the script and my methodology for
checking the results.  There was already a case of a cast that I have
fixed up my script for, but this one is worse because it's under a macro.
I can look into whether the cast can be changed to add a const, but for
the time being, I think you should just drop this patch.
Done! :-)
Thanks for the careful review.
Sure thing, thanks for all your work with cocci.
-- 
Darren Hart
Intel Open Source Technology Center
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