Re: [PATCH] scsi: kconfig: When possible, compile drivers with COMPILE_TEST
From: kbuild test robot
Date: Wed Oct 14 2015 - 21:12:28 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/20151015-051558
reproduce:
# apt-get install sparse
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
>> drivers/scsi/NCR5380.c:1751:9: sparse: context imbalance in 'NCR5380_transfer_dma' - unexpected unlock
vim +/NCR5380_transfer_dma +1751 drivers/scsi/NCR5380.c
^1da177e Linus Torvalds 2005-04-16 1735 NCR5380_setup(instance);
^1da177e Linus Torvalds 2005-04-16 1736
^1da177e Linus Torvalds 2005-04-16 1737 if ((tmp = (NCR5380_read(STATUS_REG) & PHASE_MASK)) != p) {
^1da177e Linus Torvalds 2005-04-16 1738 *phase = tmp;
^1da177e Linus Torvalds 2005-04-16 1739 return -1;
^1da177e Linus Torvalds 2005-04-16 1740 }
^1da177e Linus Torvalds 2005-04-16 1741 #if defined(REAL_DMA) || defined(REAL_DMA_POLL)
^1da177e Linus Torvalds 2005-04-16 1742 #ifdef READ_OVERRUNS
^1da177e Linus Torvalds 2005-04-16 1743 if (p & SR_IO) {
^1da177e Linus Torvalds 2005-04-16 1744 c -= 2;
^1da177e Linus Torvalds 2005-04-16 1745 }
^1da177e Linus Torvalds 2005-04-16 1746 #endif
52a6a1cb Finn Thain 2014-03-18 1747 dprintk(NDEBUG_DMA, "scsi%d : initializing DMA channel %d for %s, %d bytes %s %0x\n", instance->host_no, instance->dma_channel, (p & SR_IO) ? "reading" : "writing", c, (p & SR_IO) ? "to" : "from", (unsigned) d);
^1da177e Linus Torvalds 2005-04-16 1748 hostdata->dma_len = (p & SR_IO) ? NCR5380_dma_read_setup(instance, d, c) : NCR5380_dma_write_setup(instance, d, c);
^1da177e Linus Torvalds 2005-04-16 1749 #endif
^1da177e Linus Torvalds 2005-04-16 1750
^1da177e Linus Torvalds 2005-04-16 @1751 NCR5380_write(TARGET_COMMAND_REG, PHASE_SR_TO_TCR(p));
^1da177e Linus Torvalds 2005-04-16 1752
^1da177e Linus Torvalds 2005-04-16 1753 #ifdef REAL_DMA
^1da177e Linus Torvalds 2005-04-16 1754 NCR5380_write(MODE_REG, MR_BASE | MR_DMA_MODE | MR_ENABLE_EOP_INTR | MR_MONITOR_BSY);
^1da177e Linus Torvalds 2005-04-16 1755 #elif defined(REAL_DMA_POLL)
^1da177e Linus Torvalds 2005-04-16 1756 NCR5380_write(MODE_REG, MR_BASE | MR_DMA_MODE);
^1da177e Linus Torvalds 2005-04-16 1757 #else
^1da177e Linus Torvalds 2005-04-16 1758 /*
^1da177e Linus Torvalds 2005-04-16 1759 * Note : on my sample board, watch-dog timeouts occurred when interrupts
:::::: The code at line 1751 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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