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Date: Mon, 22 Aug 2022 21:14:22 +0800
From: kernel test robot <lkp@...el.com>
To: Vaishnav Achath <vaishnav.a@...com>, peter.ujfalusi@...il.com,
vkoul@...nel.org, broonie@...nel.org, dmaengine@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org
Cc: kbuild-all@...ts.01.org, vigneshr@...com, kishon@...com,
vaishnav.a@...com
Subject: Re: [PATCH 2/2] spi: spi-omap2-mcspi: Use EOW interrupt for
completion when DMA enabled
Hi Vaishnav,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on vkoul-dmaengine/next]
[also build test WARNING on broonie-spi/for-next linus/master v6.0-rc2 next-20220822]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Vaishnav-Achath/spi-spi-omap2-mcspi-Use-EOW-interrupt-for-transfer-completion/20220822-171807
base: https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git next
config: arc-randconfig-r043-20220821 (https://download.01.org/0day-ci/archive/20220822/202208222100.SKGSz2m9-lkp@intel.com/config)
compiler: arc-elf-gcc (GCC) 12.1.0
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://github.com/intel-lab-lkp/linux/commit/492d819558f7cb9fb64d860042c6ca17a054c3f7
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Vaishnav-Achath/spi-spi-omap2-mcspi-Use-EOW-interrupt-for-transfer-completion/20220822-171807
git checkout 492d819558f7cb9fb64d860042c6ca17a054c3f7
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arc SHELL=/bin/bash drivers/spi/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
drivers/spi/spi-omap2-mcspi.c: In function 'omap2_mcspi_txrx_dma':
>> drivers/spi/spi-omap2-mcspi.c:549:34: warning: variable 'mcspi_dma' set but not used [-Wunused-but-set-variable]
549 | struct omap2_mcspi_dma *mcspi_dma;
| ^~~~~~~~~
vim +/mcspi_dma +549 drivers/spi/spi-omap2-mcspi.c
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 543
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 544 static unsigned
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 545 omap2_mcspi_txrx_dma(struct spi_device *spi, struct spi_transfer *xfer)
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 546 {
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 547 struct omap2_mcspi *mcspi;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 548 struct omap2_mcspi_cs *cs = spi->controller_state;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 @549 struct omap2_mcspi_dma *mcspi_dma;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 550 unsigned int count;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 551 u8 *rx;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 552 const u8 *tx;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 553 struct dma_slave_config cfg;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 554 enum dma_slave_buswidth width;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 555 unsigned es;
e47a682ace0cd5 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-11-06 556 void __iomem *chstat_reg;
d33f473dcd8e69 drivers/spi/spi-omap2-mcspi.c Illia Smyrnov 2013-06-17 557 int wait_res;
492d819558f7cb drivers/spi/spi-omap2-mcspi.c Vaishnav Achath 2022-08-22 558 int ret;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 559
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 560 mcspi = spi_master_get_devdata(spi->master);
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 561 mcspi_dma = &mcspi->dma_channels[spi->chip_select];
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 562
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 563 if (cs->word_len <= 8) {
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 564 width = DMA_SLAVE_BUSWIDTH_1_BYTE;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 565 es = 1;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 566 } else if (cs->word_len <= 16) {
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 567 width = DMA_SLAVE_BUSWIDTH_2_BYTES;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 568 es = 2;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 569 } else {
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 570 width = DMA_SLAVE_BUSWIDTH_4_BYTES;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 571 es = 4;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 572 }
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 573
d33f473dcd8e69 drivers/spi/spi-omap2-mcspi.c Illia Smyrnov 2013-06-17 574 count = xfer->len;
d33f473dcd8e69 drivers/spi/spi-omap2-mcspi.c Illia Smyrnov 2013-06-17 575
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 576 memset(&cfg, 0, sizeof(cfg));
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 577 cfg.src_addr = cs->phys + OMAP2_MCSPI_RX0;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 578 cfg.dst_addr = cs->phys + OMAP2_MCSPI_TX0;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 579 cfg.src_addr_width = width;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 580 cfg.dst_addr_width = width;
baf8b9f8d260c5 drivers/spi/spi-omap2-mcspi.c Vignesh R 2019-01-15 581 cfg.src_maxburst = 1;
baf8b9f8d260c5 drivers/spi/spi-omap2-mcspi.c Vignesh R 2019-01-15 582 cfg.dst_maxburst = 1;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 583
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 584 rx = xfer->rx_buf;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 585 tx = xfer->tx_buf;
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 586
89e8b9cb846515 drivers/spi/spi-omap2-mcspi.c Vignesh R 2018-10-15 587 mcspi->slave_aborted = false;
492d819558f7cb drivers/spi/spi-omap2-mcspi.c Vaishnav Achath 2022-08-22 588 reinit_completion(&mcspi->txrxdone);
492d819558f7cb drivers/spi/spi-omap2-mcspi.c Vaishnav Achath 2022-08-22 589 mcspi_write_reg(spi->master, OMAP2_MCSPI_IRQENABLE, OMAP2_MCSPI_IRQSTATUS_EOW);
492d819558f7cb drivers/spi/spi-omap2-mcspi.c Vaishnav Achath 2022-08-22 590 if (tx)
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 591 omap2_mcspi_tx_dma(spi, xfer, cfg);
d7b4394e780b02 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-09-11 592
492d819558f7cb drivers/spi/spi-omap2-mcspi.c Vaishnav Achath 2022-08-22 593 if (rx)
e47a682ace0cd5 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-11-06 594 count = omap2_mcspi_rx_dma(spi, xfer, cfg, es);
e47a682ace0cd5 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-11-06 595
492d819558f7cb drivers/spi/spi-omap2-mcspi.c Vaishnav Achath 2022-08-22 596 ret = mcspi_wait_for_completion(mcspi, &mcspi->txrxdone);
89e8b9cb846515 drivers/spi/spi-omap2-mcspi.c Vignesh R 2018-10-15 597 omap2_mcspi_set_dma_req(spi, 0, 0);
89e8b9cb846515 drivers/spi/spi-omap2-mcspi.c Vignesh R 2018-10-15 598 if (ret || mcspi->slave_aborted)
89e8b9cb846515 drivers/spi/spi-omap2-mcspi.c Vignesh R 2018-10-15 599 return 0;
d33f473dcd8e69 drivers/spi/spi-omap2-mcspi.c Illia Smyrnov 2013-06-17 600
e47a682ace0cd5 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-11-06 601 /* for TX_ONLY mode, be sure all words have shifted out */
492d819558f7cb drivers/spi/spi-omap2-mcspi.c Vaishnav Achath 2022-08-22 602 if (tx && !rx) {
d33f473dcd8e69 drivers/spi/spi-omap2-mcspi.c Illia Smyrnov 2013-06-17 603 chstat_reg = cs->base + OMAP2_MCSPI_CHSTAT0;
d33f473dcd8e69 drivers/spi/spi-omap2-mcspi.c Illia Smyrnov 2013-06-17 604 if (mcspi->fifo_depth > 0) {
492d819558f7cb drivers/spi/spi-omap2-mcspi.c Vaishnav Achath 2022-08-22 605 wait_res = mcspi_wait_for_reg_bit(chstat_reg, OMAP2_MCSPI_CHSTAT_TXFFE);
d33f473dcd8e69 drivers/spi/spi-omap2-mcspi.c Illia Smyrnov 2013-06-17 606 if (wait_res < 0)
d33f473dcd8e69 drivers/spi/spi-omap2-mcspi.c Illia Smyrnov 2013-06-17 607 dev_err(&spi->dev, "TXFFE timed out\n");
d33f473dcd8e69 drivers/spi/spi-omap2-mcspi.c Illia Smyrnov 2013-06-17 608 } else {
492d819558f7cb drivers/spi/spi-omap2-mcspi.c Vaishnav Achath 2022-08-22 609 wait_res = mcspi_wait_for_reg_bit(chstat_reg, OMAP2_MCSPI_CHSTAT_TXS);
d33f473dcd8e69 drivers/spi/spi-omap2-mcspi.c Illia Smyrnov 2013-06-17 610 if (wait_res < 0)
e47a682ace0cd5 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-11-06 611 dev_err(&spi->dev, "TXS timed out\n");
d33f473dcd8e69 drivers/spi/spi-omap2-mcspi.c Illia Smyrnov 2013-06-17 612 }
492d819558f7cb drivers/spi/spi-omap2-mcspi.c Vaishnav Achath 2022-08-22 613 if (wait_res >= 0 && (mcspi_wait_for_reg_bit(chstat_reg,
d33f473dcd8e69 drivers/spi/spi-omap2-mcspi.c Illia Smyrnov 2013-06-17 614 OMAP2_MCSPI_CHSTAT_EOT) < 0))
e47a682ace0cd5 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-11-06 615 dev_err(&spi->dev, "EOT timed out\n");
e47a682ace0cd5 drivers/spi/spi-omap2-mcspi.c Shubhrajyoti D 2012-11-06 616 }
492d819558f7cb drivers/spi/spi-omap2-mcspi.c Vaishnav Achath 2022-08-22 617
ccdc7bf925731e drivers/spi/omap2_mcspi.c Samuel Ortiz 2007-07-17 618 return count;
ccdc7bf925731e drivers/spi/omap2_mcspi.c Samuel Ortiz 2007-07-17 619 }
ccdc7bf925731e drivers/spi/omap2_mcspi.c Samuel Ortiz 2007-07-17 620
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