CC: l...@lists.linux.dev CC: kbuild-...@lists.01.org CC: linux-ker...@vger.kernel.org TO: Michael Tretter <m.tret...@pengutronix.de> CC: Vinod Koul <vk...@kernel.org>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 8ab774587903771821b59471cc723bba6d893942 commit: 7073b5a8bd6ea641b41568e2899b0977f79134e3 dmaengine: zynqmp_dma: enable COMPILE_TEST date: 6 weeks ago :::::: branch date: 20 hours ago :::::: commit date: 6 weeks ago config: riscv-randconfig-c006-20211115 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project fbe72e41b99dc7994daac300d208a955be3e4a0a) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7073b5a8bd6ea641b41568e2899b0977f79134e3 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 7073b5a8bd6ea641b41568e2899b0977f79134e3 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv clang-analyzer If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> clang-analyzer warnings: (new ones prefixed by >>) ret = cx24120_writereg(state, CX24120_REG_RATEDIV, ret); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/dvb-frontends/cx24120.c:1229:2: note: Value stored to 'ret' is never read ret = cx24120_writereg(state, CX24120_REG_RATEDIV, ret); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/dvb-frontends/cx24120.c:1471:24: warning: Value stored to 'state' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct cx24120_state *state = fe->demodulator_priv; ^~~~~ ~~~~~~~~~~~~~~~~~~~~ drivers/media/dvb-frontends/cx24120.c:1471:24: note: Value stored to 'state' during its initialization is never read struct cx24120_state *state = fe->demodulator_priv; ^~~~~ ~~~~~~~~~~~~~~~~~~~~ Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 5 warnings generated. drivers/media/dvb-frontends/stv0900_sw.c:1978:4: warning: Value stored to 'lock' is never read [clang-analyzer-deadcode.DeadStores] lock = TRUE; ^ drivers/media/dvb-frontends/stv0900_sw.c:1978:4: note: Value stored to 'lock' is never read drivers/media/dvb-frontends/stv0900_sw.c:1993:4: warning: Value stored to 'lock' is never read [clang-analyzer-deadcode.DeadStores] lock = FALSE; ^ drivers/media/dvb-frontends/stv0900_sw.c:1993:4: note: Value stored to 'lock' is never read Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. Suppressed 4 warnings (4 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. Suppressed 4 warnings (4 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. Suppressed 4 warnings (4 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 5 warnings generated. Suppressed 5 warnings (5 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 5 warnings generated. Suppressed 5 warnings (5 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 5 warnings generated. Suppressed 5 warnings (5 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 5 warnings generated. Suppressed 5 warnings (5 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. Suppressed 4 warnings (4 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 2 warnings generated. Suppressed 2 warnings (2 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. Suppressed 4 warnings (3 in non-user code, 1 with check filters). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 2 warnings generated. Suppressed 2 warnings (2 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 5 warnings generated. >> drivers/dma/xilinx/zynqmp_dma.c:359:2: warning: Value stored to 'val' is >> never read [clang-analyzer-deadcode.DeadStores] val = readl(chan->regs + ZYNQMP_DMA_IRQ_SRC_ACCT); ^ drivers/dma/xilinx/zynqmp_dma.c:359:2: note: Value stored to 'val' is never read drivers/dma/xilinx/zynqmp_dma.c:360:2: warning: Value stored to 'val' is never read [clang-analyzer-deadcode.DeadStores] val = readl(chan->regs + ZYNQMP_DMA_IRQ_DST_ACCT); ^ drivers/dma/xilinx/zynqmp_dma.c:360:2: note: Value stored to 'val' is never read Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. Suppressed 4 warnings (4 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 2 warnings generated. Suppressed 2 warnings (2 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 2 warnings generated. Suppressed 2 warnings (2 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 5 warnings generated. Suppressed 5 warnings (4 in non-user code, 1 with check filters). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. drivers/iio/imu/fxos8700_core.c:167:8: warning: Excessive padding in 'struct fxos8700_data' (106 padding bytes, where 42 is optimal). Optimal fields order: buf, regmap, trig, consider reordering the fields or adding explicit padding members [clang-analyzer-optin.performance.Padding] struct fxos8700_data { ~~~~~~~^~~~~~~~~~~~~~~ drivers/iio/imu/fxos8700_core.c:167:8: note: Excessive padding in 'struct fxos8700_data' (106 padding bytes, where 42 is optimal). Optimal fields order: buf, regmap, trig, consider reordering the fields or adding explicit padding members struct fxos8700_data { ~~~~~~~^~~~~~~~~~~~~~~ Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. Suppressed 4 warnings (4 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 2 warnings generated. Suppressed 2 warnings (2 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 5 warnings generated. drivers/mtd/mtdsuper.c:27:19: warning: Value stored to 'mtd' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct mtd_info *mtd = fc->sget_key; ^~~ ~~~~~~~~~~~~ drivers/mtd/mtdsuper.c:27:19: note: Value stored to 'mtd' during its initialization is never read struct mtd_info *mtd = fc->sget_key; ^~~ ~~~~~~~~~~~~ Suppressed 4 warnings (4 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. drivers/mtd/mtdconcat.c:67:4: warning: Value stored to 'size' is never read [clang-analyzer-deadcode.DeadStores] size = 0; ^ ~ drivers/mtd/mtdconcat.c:67:4: note: Value stored to 'size' is never read size = 0; ^ ~ drivers/mtd/mtdconcat.c:159:4: warning: Value stored to 'size' is never read [clang-analyzer-deadcode.DeadStores] vim +/val +359 drivers/dma/xilinx/zynqmp_dma.c b0cc417c163719 Kedareswara rao Appana 2016-07-01 329 b0cc417c163719 Kedareswara rao Appana 2016-07-01 330 /** b0cc417c163719 Kedareswara rao Appana 2016-07-01 331 * zynqmp_dma_init - Initialize the channel b0cc417c163719 Kedareswara rao Appana 2016-07-01 332 * @chan: ZynqMP DMA channel pointer b0cc417c163719 Kedareswara rao Appana 2016-07-01 333 */ b0cc417c163719 Kedareswara rao Appana 2016-07-01 334 static void zynqmp_dma_init(struct zynqmp_dma_chan *chan) b0cc417c163719 Kedareswara rao Appana 2016-07-01 335 { b0cc417c163719 Kedareswara rao Appana 2016-07-01 336 u32 val; b0cc417c163719 Kedareswara rao Appana 2016-07-01 337 b0cc417c163719 Kedareswara rao Appana 2016-07-01 338 writel(ZYNQMP_DMA_IDS_DEFAULT_MASK, chan->regs + ZYNQMP_DMA_IDS); b0cc417c163719 Kedareswara rao Appana 2016-07-01 339 val = readl(chan->regs + ZYNQMP_DMA_ISR); b0cc417c163719 Kedareswara rao Appana 2016-07-01 340 writel(val, chan->regs + ZYNQMP_DMA_ISR); b0cc417c163719 Kedareswara rao Appana 2016-07-01 341 b0cc417c163719 Kedareswara rao Appana 2016-07-01 342 if (chan->is_dmacoherent) { b0cc417c163719 Kedareswara rao Appana 2016-07-01 343 val = ZYNQMP_DMA_AXCOHRNT; b0cc417c163719 Kedareswara rao Appana 2016-07-01 344 val = (val & ~ZYNQMP_DMA_AXCACHE) | b0cc417c163719 Kedareswara rao Appana 2016-07-01 345 (ZYNQMP_DMA_AXCACHE_VAL << ZYNQMP_DMA_AXCACHE_OFST); b0cc417c163719 Kedareswara rao Appana 2016-07-01 346 writel(val, chan->regs + ZYNQMP_DMA_DSCR_ATTR); b0cc417c163719 Kedareswara rao Appana 2016-07-01 347 } b0cc417c163719 Kedareswara rao Appana 2016-07-01 348 b0cc417c163719 Kedareswara rao Appana 2016-07-01 349 val = readl(chan->regs + ZYNQMP_DMA_DATA_ATTR); b0cc417c163719 Kedareswara rao Appana 2016-07-01 350 if (chan->is_dmacoherent) { b0cc417c163719 Kedareswara rao Appana 2016-07-01 351 val = (val & ~ZYNQMP_DMA_ARCACHE) | b0cc417c163719 Kedareswara rao Appana 2016-07-01 352 (ZYNQMP_DMA_AXCACHE_VAL << ZYNQMP_DMA_ARCACHE_OFST); b0cc417c163719 Kedareswara rao Appana 2016-07-01 353 val = (val & ~ZYNQMP_DMA_AWCACHE) | b0cc417c163719 Kedareswara rao Appana 2016-07-01 354 (ZYNQMP_DMA_AXCACHE_VAL << ZYNQMP_DMA_AWCACHE_OFST); b0cc417c163719 Kedareswara rao Appana 2016-07-01 355 } b0cc417c163719 Kedareswara rao Appana 2016-07-01 356 writel(val, chan->regs + ZYNQMP_DMA_DATA_ATTR); b0cc417c163719 Kedareswara rao Appana 2016-07-01 357 b0cc417c163719 Kedareswara rao Appana 2016-07-01 358 /* Clearing the interrupt account rgisters */ b0cc417c163719 Kedareswara rao Appana 2016-07-01 @359 val = readl(chan->regs + ZYNQMP_DMA_IRQ_SRC_ACCT); b0cc417c163719 Kedareswara rao Appana 2016-07-01 360 val = readl(chan->regs + ZYNQMP_DMA_IRQ_DST_ACCT); b0cc417c163719 Kedareswara rao Appana 2016-07-01 361 b0cc417c163719 Kedareswara rao Appana 2016-07-01 362 chan->idle = true; b0cc417c163719 Kedareswara rao Appana 2016-07-01 363 } b0cc417c163719 Kedareswara rao Appana 2016-07-01 364 :::::: The code at line 359 was first introduced by commit :::::: b0cc417c1637192be658e68a74c8d1568e3d35f6 dmaengine: Add Xilinx zynqmp dma engine driver support :::::: TO: Kedareswara rao Appana <appana.durga....@xilinx.com> :::::: CC: Vinod Koul <vinod.k...@intel.com> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
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