* drivers/mtd/spi-nor/controllers/cadence-quadspi.c:258:18: warning: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour [shiftTooManyBitsSigned]
@ 2020-04-23 5:53 kbuild test robot
0 siblings, 0 replies; only message in thread
From: kbuild test robot @ 2020-04-23 5:53 UTC (permalink / raw)
To: Guenter Roeck
Cc: kbuild-all, linux-kernel, Richard Weinberger, Boris Brezillon,
Tudor Ambarus
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: c578ddb39e565139897124e74e5a43e56538cb33
commit: 2098c564701c0dde76063dd9c5c00a7a1f173541 mtd: spi-nor: Compile files in controllers/ directory
date: 13 days ago
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>
cppcheck warnings: (new ones prefixed by >>)
>> drivers/mtd/spi-nor/controllers/cadence-quadspi.c:258:18: warning: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour [shiftTooManyBitsSigned]
return reg & (1 << CQSPI_REG_CONFIG_IDLE_LSB);
^
vim +258 drivers/mtd/spi-nor/controllers/cadence-quadspi.c
14062341053690 drivers/mtd/spi-nor/cadence-quadspi.c Graham Moore 2016-06-04 253
14062341053690 drivers/mtd/spi-nor/cadence-quadspi.c Graham Moore 2016-06-04 254 static bool cqspi_is_idle(struct cqspi_st *cqspi)
14062341053690 drivers/mtd/spi-nor/cadence-quadspi.c Graham Moore 2016-06-04 255 {
14062341053690 drivers/mtd/spi-nor/cadence-quadspi.c Graham Moore 2016-06-04 256 u32 reg = readl(cqspi->iobase + CQSPI_REG_CONFIG);
14062341053690 drivers/mtd/spi-nor/cadence-quadspi.c Graham Moore 2016-06-04 257
14062341053690 drivers/mtd/spi-nor/cadence-quadspi.c Graham Moore 2016-06-04 @258 return reg & (1 << CQSPI_REG_CONFIG_IDLE_LSB);
14062341053690 drivers/mtd/spi-nor/cadence-quadspi.c Graham Moore 2016-06-04 259 }
14062341053690 drivers/mtd/spi-nor/cadence-quadspi.c Graham Moore 2016-06-04 260
:::::: The code at line 258 was first introduced by commit
:::::: 140623410536905fa6ab737b625decfde6c64a72 mtd: spi-nor: Add driver for Cadence Quad SPI Flash Controller
:::::: TO: Graham Moore <grmoore@opensource.altera.com>
:::::: CC: Brian Norris <computersforpeace@gmail.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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