Re: [PATCH] USB: gadget: udc: tracing: Do not open code __string() with __dynamic_array()

[kernel test robot <lkp@intel.com>]

Hi Steven,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on usb/usb-testing]
[also build test ERROR on linus/master v5.19-rc4 next-20220701]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/intel-lab-lkp/linux/commits/Steven-Rostedt/USB-gadget-udc-tracing-Do-not-open-code-__string-with-__dynamic_array/20220703-080329
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
config: riscv-buildonly-randconfig-r001-20220703 (https://download.01.org/0day-ci/archive/20220703/202207030931.QMgcEvNT-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 11.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/63b33d8f7a24820f05bd2b8330b19c3d78e0c36f
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Steven-Rostedt/USB-gadget-udc-tracing-Do-not-open-code-__string-with-__dynamic_array/20220703-080329
        git checkout 63b33d8f7a24820f05bd2b8330b19c3d78e0c36f
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/usb/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from include/trace/define_trace.h:102,
                    from drivers/usb/gadget/udc/trace.h:289,
                    from drivers/usb/gadget/udc/trace.c:10:
>> drivers/usb/gadget/udc/./trace.h:217:41: error: expected expression before ';' token
     217 |                 __string(name, ep->name);
         |                                         ^
   include/trace/trace_events.h:244:9: note: in definition of macro 'DECLARE_EVENT_CLASS'
     244 |         tstruct                                                         \
         |         ^~~~~~~
   drivers/usb/gadget/udc/./trace.h:216:9: note: in expansion of macro 'TP_STRUCT__entry'
     216 |         TP_STRUCT__entry(
         |         ^~~~~~~~~~~~~~~~


vim +217 drivers/usb/gadget/udc/./trace.h

   212	
   213	DECLARE_EVENT_CLASS(udc_log_req,
   214		TP_PROTO(struct usb_ep *ep, struct usb_request *req, int ret),
   215		TP_ARGS(ep, req, ret),
   216		TP_STRUCT__entry(
 > 217			__string(name, ep->name);
   218			__field(unsigned, length)
   219			__field(unsigned, actual)
   220			__field(unsigned, num_sgs)
   221			__field(unsigned, num_mapped_sgs)
   222			__field(unsigned, stream_id)
   223			__field(unsigned, no_interrupt)
   224			__field(unsigned, zero)
   225			__field(unsigned, short_not_ok)
   226			__field(int, status)
   227			__field(int, ret)
   228			__field(struct usb_request *, req)
   229		),
   230		TP_fast_assign(
   231			__assign_str(name, ep->name);
   232			__entry->length = req->length;
   233			__entry->actual = req->actual;
   234			__entry->num_sgs = req->num_sgs;
   235			__entry->num_mapped_sgs = req->num_mapped_sgs;
   236			__entry->stream_id = req->stream_id;
   237			__entry->no_interrupt = req->no_interrupt;
   238			__entry->zero = req->zero;
   239			__entry->short_not_ok = req->short_not_ok;
   240			__entry->status = req->status;
   241			__entry->ret = ret;
   242			__entry->req = req;
   243		),
   244		TP_printk("%s: req %p length %d/%d sgs %d/%d stream %d %s%s%s status %d --> %d",
   245			__get_str(name),__entry->req,  __entry->actual, __entry->length,
   246			__entry->num_mapped_sgs, __entry->num_sgs, __entry->stream_id,
   247			__entry->zero ? "Z" : "z",
   248			__entry->short_not_ok ? "S" : "s",
   249			__entry->no_interrupt ? "i" : "I",
   250			__entry->status, __entry->ret
   251		)
   252	);
   253	

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