Hello, This patch fix it. https://lore.kernel.org/lkml/20211026020508.550-1-caihuoqing@baidu.com/ > -----Original Message----- > From: kernel test robot > Sent: 2021Äê10ÔÂ26ÈÕ 1:55 > To: Cai,Huoqing > Cc: kbuild-all@lists.01.org; linux-kernel@vger.kernel.org; Vinod Koul > Subject: [vkoul-dmaengine:next 45/56] drivers/dma/sa11x0-dma.c:1042:12: > error: 'sa11x0_dma_resume' defined but not used > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git next > head: 981b43434b28cff9ddc490e212f49e905c18bda1 > commit: 7789e3464cb610cb8925cd8605bc0aa9d088280d [45/56] dmaengine: > sa11x0: Make use of the helper macro SET_NOIRQ_SYSTEM_SLEEP_PM_OPS() > config: parisc-allyesconfig (attached as .config) > compiler: hppa-linux-gcc (GCC) 11.2.0 > 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 > # > https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git/commit/?i > d=7789e3464cb610cb8925cd8605bc0aa9d088280d > git remote add vkoul-dmaengine > https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git > git fetch --no-tags vkoul-dmaengine next > git checkout 7789e3464cb610cb8925cd8605bc0aa9d088280d > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 > make.cross ARCH=parisc > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot > > All errors (new ones prefixed by >>): > > >> drivers/dma/sa11x0-dma.c:1042:12: error: 'sa11x0_dma_resume' defined but > not used [-Werror=unused-function] > 1042 | static int sa11x0_dma_resume(struct device *dev) > | ^~~~~~~~~~~~~~~~~ > >> drivers/dma/sa11x0-dma.c:1004:12: error: 'sa11x0_dma_suspend' defined > but not used [-Werror=unused-function] > 1004 | static int sa11x0_dma_suspend(struct device *dev) > | ^~~~~~~~~~~~~~~~~~ > cc1: all warnings being treated as errors > > > vim +/sa11x0_dma_resume +1042 drivers/dma/sa11x0-dma.c > > 6365bead25efc8 Russell King 2012-01-09 1003 > 6365bead25efc8 Russell King 2012-01-09 @1004 static int > sa11x0_dma_suspend(struct device *dev) > 6365bead25efc8 Russell King 2012-01-09 1005 { > 6365bead25efc8 Russell King 2012-01-09 1006 struct sa11x0_dma_dev *d = > dev_get_drvdata(dev); > 6365bead25efc8 Russell King 2012-01-09 1007 unsigned pch; > 6365bead25efc8 Russell King 2012-01-09 1008 > 6365bead25efc8 Russell King 2012-01-09 1009 for (pch = 0; pch < > NR_PHY_CHAN; pch++) { > 6365bead25efc8 Russell King 2012-01-09 1010 struct > sa11x0_dma_phy *p = &d->phy[pch]; > 6365bead25efc8 Russell King 2012-01-09 1011 u32 dcsr, saved_dcsr; > 6365bead25efc8 Russell King 2012-01-09 1012 > 6365bead25efc8 Russell King 2012-01-09 1013 dcsr = saved_dcsr = > readl_relaxed(p->base + DMA_DCSR_R); > 6365bead25efc8 Russell King 2012-01-09 1014 if (dcsr & DCSR_RUN) { > 6365bead25efc8 Russell King 2012-01-09 1015 > writel(DCSR_RUN | DCSR_IE, p->base + DMA_DCSR_C); > 6365bead25efc8 Russell King 2012-01-09 1016 dcsr = > readl_relaxed(p->base + DMA_DCSR_R); > 6365bead25efc8 Russell King 2012-01-09 1017 } > 6365bead25efc8 Russell King 2012-01-09 1018 > 6365bead25efc8 Russell King 2012-01-09 1019 saved_dcsr &= > DCSR_RUN | DCSR_IE; > 6365bead25efc8 Russell King 2012-01-09 1020 if (dcsr & DCSR_BIU) { > 6365bead25efc8 Russell King 2012-01-09 1021 p->dbs[0] = > readl_relaxed(p->base + DMA_DBSB); > 6365bead25efc8 Russell King 2012-01-09 1022 p->dbt[0] = > readl_relaxed(p->base + DMA_DBTB); > 6365bead25efc8 Russell King 2012-01-09 1023 p->dbs[1] = > readl_relaxed(p->base + DMA_DBSA); > 6365bead25efc8 Russell King 2012-01-09 1024 p->dbt[1] = > readl_relaxed(p->base + DMA_DBTA); > 6365bead25efc8 Russell King 2012-01-09 1025 saved_dcsr |= > (dcsr & DCSR_STRTA ? DCSR_STRTB : 0) | > 6365bead25efc8 Russell King 2012-01-09 1026 > (dcsr & DCSR_STRTB ? DCSR_STRTA : 0); > 6365bead25efc8 Russell King 2012-01-09 1027 } else { > 6365bead25efc8 Russell King 2012-01-09 1028 p->dbs[0] = > readl_relaxed(p->base + DMA_DBSA); > 6365bead25efc8 Russell King 2012-01-09 1029 p->dbt[0] = > readl_relaxed(p->base + DMA_DBTA); > 6365bead25efc8 Russell King 2012-01-09 1030 p->dbs[1] = > readl_relaxed(p->base + DMA_DBSB); > 6365bead25efc8 Russell King 2012-01-09 1031 p->dbt[1] = > readl_relaxed(p->base + DMA_DBTB); > 6365bead25efc8 Russell King 2012-01-09 1032 saved_dcsr |= > dcsr & (DCSR_STRTA | DCSR_STRTB); > 6365bead25efc8 Russell King 2012-01-09 1033 } > 6365bead25efc8 Russell King 2012-01-09 1034 p->dcsr = saved_dcsr; > 6365bead25efc8 Russell King 2012-01-09 1035 > 6365bead25efc8 Russell King 2012-01-09 1036 writel(DCSR_STRTA | > DCSR_STRTB, p->base + DMA_DCSR_C); > 6365bead25efc8 Russell King 2012-01-09 1037 } > 6365bead25efc8 Russell King 2012-01-09 1038 > 6365bead25efc8 Russell King 2012-01-09 1039 return 0; > 6365bead25efc8 Russell King 2012-01-09 1040 } > 6365bead25efc8 Russell King 2012-01-09 1041 > 6365bead25efc8 Russell King 2012-01-09 @1042 static int > sa11x0_dma_resume(struct device *dev) > 6365bead25efc8 Russell King 2012-01-09 1043 { > 6365bead25efc8 Russell King 2012-01-09 1044 struct sa11x0_dma_dev *d = > dev_get_drvdata(dev); > 6365bead25efc8 Russell King 2012-01-09 1045 unsigned pch; > 6365bead25efc8 Russell King 2012-01-09 1046 > 6365bead25efc8 Russell King 2012-01-09 1047 for (pch = 0; pch < > NR_PHY_CHAN; pch++) { > 6365bead25efc8 Russell King 2012-01-09 1048 struct > sa11x0_dma_phy *p = &d->phy[pch]; > 6365bead25efc8 Russell King 2012-01-09 1049 struct > sa11x0_dma_desc *txd = NULL; > 6365bead25efc8 Russell King 2012-01-09 1050 u32 dcsr = > readl_relaxed(p->base + DMA_DCSR_R); > 6365bead25efc8 Russell King 2012-01-09 1051 > 6365bead25efc8 Russell King 2012-01-09 1052 WARN_ON(dcsr & > (DCSR_BIU | DCSR_STRTA | DCSR_STRTB | DCSR_RUN)); > 6365bead25efc8 Russell King 2012-01-09 1053 > 6365bead25efc8 Russell King 2012-01-09 1054 if (p->txd_done) > 6365bead25efc8 Russell King 2012-01-09 1055 txd = p- > >txd_done; > 6365bead25efc8 Russell King 2012-01-09 1056 else if (p->txd_load) > 6365bead25efc8 Russell King 2012-01-09 1057 txd = p- > >txd_load; > 6365bead25efc8 Russell King 2012-01-09 1058 > 6365bead25efc8 Russell King 2012-01-09 1059 if (!txd) > 6365bead25efc8 Russell King 2012-01-09 1060 continue; > 6365bead25efc8 Russell King 2012-01-09 1061 > 6365bead25efc8 Russell King 2012-01-09 1062 writel_relaxed(txd- > >ddar, p->base + DMA_DDAR); > 6365bead25efc8 Russell King 2012-01-09 1063 > 6365bead25efc8 Russell King 2012-01-09 1064 writel_relaxed(p- > >dbs[0], p->base + DMA_DBSA); > 6365bead25efc8 Russell King 2012-01-09 1065 writel_relaxed(p- > >dbt[0], p->base + DMA_DBTA); > 6365bead25efc8 Russell King 2012-01-09 1066 writel_relaxed(p- > >dbs[1], p->base + DMA_DBSB); > 6365bead25efc8 Russell King 2012-01-09 1067 writel_relaxed(p- > >dbt[1], p->base + DMA_DBTB); > 6365bead25efc8 Russell King 2012-01-09 1068 writel_relaxed(p->dcsr, > p->base + DMA_DCSR_S); > 6365bead25efc8 Russell King 2012-01-09 1069 } > 6365bead25efc8 Russell King 2012-01-09 1070 > 6365bead25efc8 Russell King 2012-01-09 1071 return 0; > 6365bead25efc8 Russell King 2012-01-09 1072 } > 6365bead25efc8 Russell King 2012-01-09 1073 > > :::::: The code at line 1042 was first introduced by commit > :::::: 6365bead25efc84a4cf4aa9b0a7638f8a970cdff DMA: sa11x0: add SA-11x0 > DMA driver > > :::::: TO: Russell King > :::::: CC: Russell King > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org