Re: [PATCH v2] scsi: kconfig: When possible, compile drivers with COMPILE_TEST
From: kbuild test robot
Date: Wed Oct 14 2015 - 23:04:12 EST
Hi Luis,
[auto build test WARNING 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/Luis-de-Bethencourt/scsi-kconfig-When-possible-compile-drivers-with-COMPILE_TEST/20151015-073819
config: sh-allmodconfig (attached as .config)
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=sh
All warnings (new ones prefixed by >>):
drivers/scsi/pas16.c: In function 'NCR5380_pread':
>> drivers/scsi/pas16.c:500:18: warning: unused variable 'i' [-Wunused-variable]
>> drivers/scsi/pas16.c:498:29: warning: unused variable 'reg' [-Wunused-variable]
>> drivers/scsi/pas16.c:497:30: warning: unused variable 'd' [-Wunused-variable]
drivers/scsi/pas16.c: In function 'NCR5380_pwrite':
drivers/scsi/pas16.c:537:18: warning: unused variable 'i' [-Wunused-variable]
drivers/scsi/pas16.c:536:29: warning: unused variable 'reg' [-Wunused-variable]
>> drivers/scsi/pas16.c:535:29: warning: unused variable 's' [-Wunused-variable]
vim +/i +500 drivers/scsi/pas16.c
^1da177e Linus Torvalds 2005-04-16 491 * Returns : 0 on success, non zero on a failure such as a watchdog
^1da177e Linus Torvalds 2005-04-16 492 * timeout.
^1da177e Linus Torvalds 2005-04-16 493 */
^1da177e Linus Torvalds 2005-04-16 494
^1da177e Linus Torvalds 2005-04-16 495 static inline int NCR5380_pread (struct Scsi_Host *instance, unsigned char *dst,
^1da177e Linus Torvalds 2005-04-16 496 int len) {
^1da177e Linus Torvalds 2005-04-16 @497 register unsigned char *d = dst;
^1da177e Linus Torvalds 2005-04-16 @498 register unsigned short reg = (unsigned short) (instance->io_port +
^1da177e Linus Torvalds 2005-04-16 499 P_DATA_REG_OFFSET);
^1da177e Linus Torvalds 2005-04-16 @500 register int i = len;
^1da177e Linus Torvalds 2005-04-16 501 int ii = 0;
a9c2dc43 Finn Thain 2014-11-12 502 struct NCR5380_hostdata *hostdata = shost_priv(instance);
^1da177e Linus Torvalds 2005-04-16 503
^1da177e Linus Torvalds 2005-04-16 504 while ( !(inb(instance->io_port + P_STATUS_REG_OFFSET) & P_ST_RDY) )
^1da177e Linus Torvalds 2005-04-16 505 ++ii;
^1da177e Linus Torvalds 2005-04-16 506
^1da177e Linus Torvalds 2005-04-16 507 insb( reg, d, i );
^1da177e Linus Torvalds 2005-04-16 508
^1da177e Linus Torvalds 2005-04-16 509 if ( inb(instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET) & P_TS_TIM) {
^1da177e Linus Torvalds 2005-04-16 510 outb( P_TS_CT, instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET);
^1da177e Linus Torvalds 2005-04-16 511 printk("scsi%d : watchdog timer fired in NCR5380_pread()\n",
^1da177e Linus Torvalds 2005-04-16 512 instance->host_no);
^1da177e Linus Torvalds 2005-04-16 513 return -1;
^1da177e Linus Torvalds 2005-04-16 514 }
a9c2dc43 Finn Thain 2014-11-12 515 if (ii > hostdata->spin_max_r)
a9c2dc43 Finn Thain 2014-11-12 516 hostdata->spin_max_r = ii;
^1da177e Linus Torvalds 2005-04-16 517 return 0;
^1da177e Linus Torvalds 2005-04-16 518 }
^1da177e Linus Torvalds 2005-04-16 519
^1da177e Linus Torvalds 2005-04-16 520 /*
^1da177e Linus Torvalds 2005-04-16 521 * Function : int NCR5380_pwrite (struct Scsi_Host *instance,
^1da177e Linus Torvalds 2005-04-16 522 * unsigned char *src, int len)
^1da177e Linus Torvalds 2005-04-16 523 *
^1da177e Linus Torvalds 2005-04-16 524 * Purpose : Fast 5380 pseudo-dma write function, transfers len bytes from
^1da177e Linus Torvalds 2005-04-16 525 * src
^1da177e Linus Torvalds 2005-04-16 526 *
^1da177e Linus Torvalds 2005-04-16 527 * Inputs : src = source, len = length in bytes
^1da177e Linus Torvalds 2005-04-16 528 *
^1da177e Linus Torvalds 2005-04-16 529 * Returns : 0 on success, non zero on a failure such as a watchdog
^1da177e Linus Torvalds 2005-04-16 530 * timeout.
^1da177e Linus Torvalds 2005-04-16 531 */
^1da177e Linus Torvalds 2005-04-16 532
^1da177e Linus Torvalds 2005-04-16 533 static inline int NCR5380_pwrite (struct Scsi_Host *instance, unsigned char *src,
^1da177e Linus Torvalds 2005-04-16 534 int len) {
^1da177e Linus Torvalds 2005-04-16 @535 register unsigned char *s = src;
^1da177e Linus Torvalds 2005-04-16 536 register unsigned short reg = (instance->io_port + P_DATA_REG_OFFSET);
^1da177e Linus Torvalds 2005-04-16 537 register int i = len;
^1da177e Linus Torvalds 2005-04-16 538 int ii = 0;
:::::: The code at line 500 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx>
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