Date:   Thu, 23 Feb 2023 19:57:18 +0800
From:   kernel test robot <lkp@intel.com>
To:     Prashanth K <quic_prashk@quicinc.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Thinh Nguyen <Thinh.Nguyen@synopsys.com>,
        Jakob Koschel <jakobkoschel@gmail.com>,
        =?iso-8859-1?Q?J=F3_=C1gila?= Bitsch <jgilab@gmail.com>,
        Alan Stern <stern@rowland.harvard.edu>
Cc:     llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
        Pratham Pratap <quic_ppratap@quicinc.com>,
        Jack Pham <quic_jackp@quicinc.com>, linux-usb@vger.kernel.org,
        linux-kernel@vger.kernel.org, Prashanth K <quic_prashk@quicinc.com>
Subject: Re: [PATCH v2 2/2] usb: gadget: composite: Draw 100mA current if not
 configured
Message-ID: <202302231910.xs35xNcG-lkp@intel.com>
References: <1677142665-8686-3-git-send-email-quic_prashk@quicinc.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1677142665-8686-3-git-send-email-quic_prashk@quicinc.com>
Precedence: bulk

Hi Prashanth,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on usb/usb-testing]
[also build test ERROR on usb/usb-next usb/usb-linus linus/master v6.2]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Prashanth-K/usb-dwc3-gadget-Change-condition-for-processing-suspend-event/20230223-165955
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
patch link:    https://lore.kernel.org/r/1677142665-8686-3-git-send-email-quic_prashk%40quicinc.com
patch subject: [PATCH v2 2/2] usb: gadget: composite: Draw 100mA current if not configured
config: hexagon-randconfig-r005-20230222 (https://download.01.org/0day-ci/archive/20230223/202302231910.xs35xNcG-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project db89896bbbd2251fff457699635acbbedeead27f)
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/19beaeb0554fc9c1556e8f7da85011f4267bd8fc
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Prashanth-K/usb-dwc3-gadget-Change-condition-for-processing-suspend-event/20230223-165955
        git checkout 19beaeb0554fc9c1556e8f7da85011f4267bd8fc
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/usb/gadget/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302231910.xs35xNcG-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   In file included from drivers/usb/gadget/composite.c:19:
   In file included from include/linux/usb/composite.h:27:
   In file included from include/linux/usb/gadget.h:24:
   In file included from include/linux/scatterlist.h:9:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __raw_readb(PCI_IOBASE + addr);
                             ~~~~~~~~~~ ^
   include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
                                                     ^
   In file included from drivers/usb/gadget/composite.c:19:
   In file included from include/linux/usb/composite.h:27:
   In file included from include/linux/usb/gadget.h:24:
   In file included from include/linux/scatterlist.h:9:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
                                                     ^
   In file included from drivers/usb/gadget/composite.c:19:
   In file included from include/linux/usb/composite.h:27:
   In file included from include/linux/usb/gadget.h:24:
   In file included from include/linux/scatterlist.h:9:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writeb(value, PCI_IOBASE + addr);
                               ~~~~~~~~~~ ^
   include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
   include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
>> drivers/usb/gadget/composite.c:2535:14: warning: comparison of distinct pointer types ('typeof (2) *' (aka 'int *') and 'typeof (100U) *' (aka 'unsigned int *')) [-Wcompare-distinct-pointer-types]
                   maxpower = min(CONFIG_USB_GADGET_VBUS_DRAW, 100U)
                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/minmax.h:67:19: note: expanded from macro 'min'
   #define min(x, y)       __careful_cmp(x, y, <)
                           ^~~~~~~~~~~~~~~~~~~~~~
   include/linux/minmax.h:36:24: note: expanded from macro '__careful_cmp'
           __builtin_choose_expr(__safe_cmp(x, y), \
                                 ^~~~~~~~~~~~~~~~
   include/linux/minmax.h:26:4: note: expanded from macro '__safe_cmp'
                   (__typecheck(x, y) && __no_side_effects(x, y))
                    ^~~~~~~~~~~~~~~~~
   include/linux/minmax.h:20:28: note: expanded from macro '__typecheck'
           (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
                      ~~~~~~~~~~~~~~ ^  ~~~~~~~~~~~~~~
>> drivers/usb/gadget/composite.c:2535:52: error: expected ';' after expression
                   maxpower = min(CONFIG_USB_GADGET_VBUS_DRAW, 100U)
                                                                    ^
                                                                    ;
   7 warnings and 1 error generated.


vim +2535 drivers/usb/gadget/composite.c

  2504	
  2505	void composite_resume(struct usb_gadget *gadget)
  2506	{
  2507		struct usb_composite_dev	*cdev = get_gadget_data(gadget);
  2508		struct usb_function		*f;
  2509		unsigned			maxpower;
  2510	
  2511		/* REVISIT:  should we have config level
  2512		 * suspend/resume callbacks?
  2513		 */
  2514		DBG(cdev, "resume\n");
  2515		if (cdev->driver->resume)
  2516			cdev->driver->resume(cdev);
  2517		if (cdev->config) {
  2518			list_for_each_entry(f, &cdev->config->functions, list) {
  2519				if (f->resume)
  2520					f->resume(f);
  2521			}
  2522	
  2523			maxpower = cdev->config->MaxPower ?
  2524				cdev->config->MaxPower : CONFIG_USB_GADGET_VBUS_DRAW;
  2525			if (gadget->speed < USB_SPEED_SUPER)
  2526				maxpower = min(maxpower, 500U);
  2527			else
  2528				maxpower = min(maxpower, 900U);
  2529	
  2530			if (maxpower > USB_SELF_POWER_VBUS_MAX_DRAW)
  2531				usb_gadget_clear_selfpowered(gadget);
  2532	
  2533			usb_gadget_vbus_draw(gadget, maxpower);
  2534		} else {
> 2535			maxpower = min(CONFIG_USB_GADGET_VBUS_DRAW, 100U)
  2536			usb_gadget_vbus_draw(gadget, maxpower);
  2537		}
  2538	
  2539		cdev->suspended = 0;
  2540	}
  2541	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests