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Message-ID: <202312050650.CCViprhz-lkp@intel.com>
Date:   Tue, 5 Dec 2023 06:45:20 +0800
From:   kernel test robot <lkp@...el.com>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Guenter Roeck <linux@...ck-us.net>,
        Michael Schmitz <schmitzmic@...il.com>
Subject: drivers/comedi/drivers/ni_daq_700.c:163:17: sparse: sparse: cast to
 restricted __le16

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   33cc938e65a98f1d29d0a18403dbbee050dcad9a
commit: 30b5e6ef4a32ea4985b99200e06d6660a69f9246 m68k: atari: Make Atari ROM port I/O write macros return void
date:   1 year, 6 months ago
config: m68k-randconfig-r131-20231119 (https://download.01.org/0day-ci/archive/20231205/202312050650.CCViprhz-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231205/202312050650.CCViprhz-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312050650.CCViprhz-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/comedi/drivers/ni_daq_700.c:163:17: sparse: sparse: cast to restricted __le16
>> drivers/comedi/drivers/ni_daq_700.c:163:17: sparse: sparse: cast to restricted __le16
>> drivers/comedi/drivers/ni_daq_700.c:163:17: sparse: sparse: cast to restricted __le16
>> drivers/comedi/drivers/ni_daq_700.c:163:17: sparse: sparse: cast to restricted __le16
   drivers/comedi/drivers/ni_daq_700.c:173:21: sparse: sparse: cast to restricted __le16
   drivers/comedi/drivers/ni_daq_700.c:173:21: sparse: sparse: cast to restricted __le16
   drivers/comedi/drivers/ni_daq_700.c:173:21: sparse: sparse: cast to restricted __le16
   drivers/comedi/drivers/ni_daq_700.c:173:21: sparse: sparse: cast to restricted __le16
   drivers/comedi/drivers/ni_daq_700.c:205:9: sparse: sparse: cast to restricted __le16
   drivers/comedi/drivers/ni_daq_700.c:205:9: sparse: sparse: cast to restricted __le16
   drivers/comedi/drivers/ni_daq_700.c:205:9: sparse: sparse: cast to restricted __le16
   drivers/comedi/drivers/ni_daq_700.c:205:9: sparse: sparse: cast to restricted __le16

vim +163 drivers/comedi/drivers/ni_daq_700.c

a9f9d8314541144 drivers/staging/comedi/drivers/ni_daq_700.c H Hartley Sweeten 2014-02-10  129  
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  130  static int daq700_ai_rinsn(struct comedi_device *dev,
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  131  			   struct comedi_subdevice *s,
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  132  			   struct comedi_insn *insn, unsigned int *data)
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  133  {
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20  134  	int n;
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  135  	int d;
a9f9d8314541144 drivers/staging/comedi/drivers/ni_daq_700.c H Hartley Sweeten 2014-02-10  136  	int ret;
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20  137  	unsigned int chan	= CR_CHAN(insn->chanspec);
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20  138  	unsigned int aref	= CR_AREF(insn->chanspec);
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20  139  	unsigned int range	= CR_RANGE(insn->chanspec);
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20  140  	unsigned int r3_bits	= 0;
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20  141  
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20  142  	/* set channel input modes */
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20  143  	if (aref == AREF_DIFF)
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20  144  		r3_bits |= CMD_R3_DIFF;
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20  145  	/* write channel mode/range */
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20  146  	if (range >= 1)
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20  147  		range++;        /* convert range to hardware value */
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20  148  	outb(r3_bits | (range & 0x03), dev->iobase + CMD_R3);
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  149  
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  150  	/* write channel to multiplexer */
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  151  	/* set mask scan bit high to disable scanning */
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  152  	outb(chan | 0x80, dev->iobase + CMD_R1);
ffed54dced86723 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2014-05-19  153  	/* mux needs 2us to really settle [Fred Brooks]. */
ffed54dced86723 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2014-05-19  154  	udelay(2);
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  155  
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  156  	/* convert n samples */
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  157  	for (n = 0; n < insn->n; n++) {
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  158  		/* trigger conversion with out0 L to H */
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  159  		outb(0x00, dev->iobase + CMD_R2); /* enable ADC conversions */
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  160  		outb(0x30, dev->iobase + CMO_R); /* mode 0 out0 L, from H */
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20  161  		outb(0x00, dev->iobase + ADCLEAR_R);	/* clear the ADC FIFO */
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20  162  		/* read 16bit junk from FIFO to clear */
cf695df834efc71 drivers/staging/comedi/drivers/ni_daq_700.c Fred Brooks       2014-06-20 @163  		inw(dev->iobase + ADFIFO_R);
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  164  		/* mode 1 out0 H, L to H, start conversion */
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  165  		outb(0x32, dev->iobase + CMO_R);
a9f9d8314541144 drivers/staging/comedi/drivers/ni_daq_700.c H Hartley Sweeten 2014-02-10  166  
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  167  		/* wait for conversion to end */
a9f9d8314541144 drivers/staging/comedi/drivers/ni_daq_700.c H Hartley Sweeten 2014-02-10  168  		ret = comedi_timeout(dev, s, insn, daq700_ai_eoc, 0);
22ca19d93d92c79 drivers/staging/comedi/drivers/ni_daq_700.c H Hartley Sweeten 2014-02-10  169  		if (ret)
a9f9d8314541144 drivers/staging/comedi/drivers/ni_daq_700.c H Hartley Sweeten 2014-02-10  170  			return ret;
a9f9d8314541144 drivers/staging/comedi/drivers/ni_daq_700.c H Hartley Sweeten 2014-02-10  171  
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  172  		/* read data */
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  173  		d = inw(dev->iobase + ADFIFO_R);
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  174  		/* mangle the data as necessary */
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  175  		/* Bipolar Offset Binary: 0 to 4095 for -10 to +10 */
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  176  		d &= 0x0fff;
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  177  		d ^= 0x0800;
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  178  		data[n] = d;
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  179  	}
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  180  	return n;
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  181  }
198b0fa48b25b60 drivers/staging/comedi/drivers/ni_daq_700.c Ian Abbott        2012-09-21  182  

:::::: The code at line 163 was first introduced by commit
:::::: cf695df834efc718b2ed17e9c83e127fd63c9033 staging: comedi: ni_daq_700: add AI range and input mode switching

:::::: TO: Fred Brooks <frederick.brooks@...rochip.com>
:::::: CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

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

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