Re: [PATCH 1/3] SCSI: Introduce device_lock and target_lock in Scsi_Host

From: kbuild test robot <lkp@intel.com>
To: Johannes Thumshirn <jthumshirn@suse.de>
Cc: kbuild-all@01.org,
	"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
	Christoph Hellwig <hch@infradead.org>,
	Hannes Reinecke <hare@suse.de>,
	linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
	Johannes Thumshirn <jthumshirn@suse.de>
Subject: Re: [PATCH 1/3] SCSI: Introduce device_lock and target_lock in Scsi_Host
Date: Wed, 14 Oct 2015 22:35:09 +0800	[thread overview]
Message-ID: <201510142214.tKWg5y6u%fengguang.wu@intel.com> (raw)
In-Reply-To: <f2ff8b554116663d7acf35fa84c23886bf486ffb.1444829611.git.jthumshirn@suse.de>

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Hi Johannes,

[auto build test ERROR on scsi/for-next -- if it's inappropriate base, please suggest rules for selecting the more suitable base]

url:    https://github.com/0day-ci/linux/commits/Johannes-Thumshirn/SCSI-Introduce-device_lock-and-target_lock-in-Scsi_Host/20151014-215532
config: i386-allmodconfig (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

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

   In file included from include/linux/mmzone.h:7:0,
                    from include/linux/gfp.h:5,
                    from include/linux/slab.h:14,
                    from drivers/scsi/53c700.c:120:
   drivers/scsi/53c700.c: In function 'process_script_interrupt':
>> drivers/scsi/53c700.c:1104:21: error: incompatible type for argument 1 of 'spinlock_check'
      spin_lock_irqsave(host->device_lock, flags);
                        ^
   include/linux/spinlock.h:208:34: note: in definition of macro 'raw_spin_lock_irqsave'
      flags = _raw_spin_lock_irqsave(lock); \
                                     ^
>> drivers/scsi/53c700.c:1104:3: note: in expansion of macro 'spin_lock_irqsave'
      spin_lock_irqsave(host->device_lock, flags);
      ^
   In file included from include/linux/mmzone.h:7:0,
                    from include/linux/gfp.h:5,
                    from include/linux/slab.h:14,
                    from drivers/scsi/53c700.c:120:
   include/linux/spinlock.h:289:40: note: expected 'spinlock_t * {aka struct spinlock *}' but argument is of type 'spinlock_t {aka struct spinlock}'
    static __always_inline raw_spinlock_t *spinlock_check(spinlock_t *lock)
                                           ^
>> drivers/scsi/53c700.c:1106:26: error: incompatible type for argument 1 of 'spin_unlock_irqrestore'
      spin_unlock_irqrestore(host->device_lock, flags);
                             ^
   In file included from include/linux/mmzone.h:7:0,
                    from include/linux/gfp.h:5,
                    from include/linux/slab.h:14,
                    from drivers/scsi/53c700.c:120:
   include/linux/spinlock.h:360:29: note: expected 'spinlock_t * {aka struct spinlock *}' but argument is of type 'spinlock_t {aka struct spinlock}'
    static __always_inline void spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags)
                                ^

vim +/spinlock_check +1104 drivers/scsi/53c700.c

  1098			lun = hostdata->msgin[0] & 0x1f;
  1099	
  1100			hostdata->reselection_id = 0xff;
  1101			DEBUG(("scsi%d: (%d:%d) RESELECTED!\n",
  1102			       host->host_no, reselection_id, lun));
  1103			/* clear the reselection indicator */
> 1104			spin_lock_irqsave(host->device_lock, flags);
  1105			SDp = __scsi_device_lookup(host, 0, reselection_id, lun);
> 1106			spin_unlock_irqrestore(host->device_lock, flags);
  1107			if(unlikely(SDp == NULL)) {
  1108				printk(KERN_ERR "scsi%d: (%d:%d) HAS NO device\n",
  1109				       host->host_no, reselection_id, lun);

---
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