linux-kernel - Re: [PATCH v3 2/2] spi: spi-ti-qspi: Add DMA support for QSPI mmap read

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Message-ID: <201606071731.UzDsXK8w%fengguang.wu@intel.com>
Date:	Tue, 7 Jun 2016 18:00:57 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Vignesh R <vigneshr@...com>
Cc:	kbuild-all@...org, Mark Brown <broonie@...nel.org>,
	linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-omap@...r.kernel.org, Vignesh R <vigneshr@...com>
Subject: Re: [PATCH v3 2/2] spi: spi-ti-qspi: Add DMA support for QSPI mmap
 read

Hi,

[auto build test WARNING on spi/for-next]
[also build test WARNING on v4.7-rc2 next-20160606]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Vignesh-R/spi-Add-DMA-support-for-ti-qspi/20160607-162134
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi for-next
config: mn10300-allmodconfig (attached as .config)
compiler: am33_2.0-linux-gcc (GCC) 4.9.0
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=mn10300 

All warnings (new ones prefixed by >>):

   drivers/spi/spi-ti-qspi.c: In function 'ti_qspi_spi_flash_read':
>> drivers/spi/spi-ti-qspi.c:549:19: warning: unused variable 'sgt' [-Wunused-variable]
      struct sg_table sgt;
                      ^
>> drivers/spi/spi-ti-qspi.c:548:9: warning: unused variable 'buf' [-Wunused-variable]
      void *buf = msg->buf;
            ^
>> drivers/spi/spi-ti-qspi.c:547:18: warning: unused variable 'dev' [-Wunused-variable]
      struct device *dev = qspi->rx_chan->device->dev;
                     ^

vim +/sgt +549 drivers/spi/spi-ti-qspi.c

   541	
   542		if (!qspi->mmap_enabled)
   543			ti_qspi_enable_memory_map(spi);
   544		ti_qspi_setup_mmap_read(spi, msg);
   545	
   546		if (qspi->rx_chan) {
 > 547			struct device *dev = qspi->rx_chan->device->dev;
 > 548			void *buf = msg->buf;
 > 549			struct sg_table sgt;
   550	
   551			if (msg->cur_msg_mapped) {
   552				ret = ti_qspi_dma_xfer_sg(qspi, msg->rx_sg, msg->from);

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Download attachment ".config.gz" of type "application/octet-stream" (39042 bytes)