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Subjectdrivers/net/ethernet/lantiq_etop.c:265:62: error: 'rx_burst_len' undeclared
Hi Aleksander,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: d2f38a3c6507b2520101f9a3807ed98f1bdc545a
commit: 14d4e308e0aa0b78dc7a059716861a4380de3535 net: lantiq: configure the burst length in ethernet drivers
date: 8 weeks ago
config: mips-xway_defconfig (attached as .config)
compiler: mips-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/torvalds/linux.git/commit/?id=14d4e308e0aa0b78dc7a059716861a4380de3535
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 14d4e308e0aa0b78dc7a059716861a4380de3535
# save the attached .config to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=mips SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

drivers/net/ethernet/lantiq_etop.c: In function 'ltq_etop_hw_init':
>> drivers/net/ethernet/lantiq_etop.c:265:62: error: 'rx_burst_len' undeclared (first use in this function)
265 | ltq_dma_init_port(DMA_PORT_ETOP, priv->tx_burst_len, rx_burst_len);
| ^~~~~~~~~~~~
drivers/net/ethernet/lantiq_etop.c:265:62: note: each undeclared identifier is reported only once for each function it appears in
drivers/net/ethernet/lantiq_etop.c: In function 'ltq_etop_probe':
>> drivers/net/ethernet/lantiq_etop.c:673:15: error: implicit declaration of function 'device_property_read_u32' [-Werror=implicit-function-declaration]
673 | err = device_property_read_u32(&pdev->dev, "lantiq,tx-burst-length", &priv->tx_burst_len);
| ^~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/lantiq_etop.c: At top level:
drivers/net/ethernet/lantiq_etop.c:730:1: warning: no previous prototype for 'init_ltq_etop' [-Wmissing-prototypes]
730 | init_ltq_etop(void)
| ^~~~~~~~~~~~~
drivers/net/ethernet/lantiq_etop.c: In function 'ltq_etop_hw_init':
drivers/net/ethernet/lantiq_etop.c:276:25: warning: ignoring return value of 'request_irq' declared with attribute 'warn_unused_result' [-Wunused-result]
276 | request_irq(irq, ltq_etop_dma_irq, 0, "etop_tx", priv);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/lantiq_etop.c:284:25: warning: ignoring return value of 'request_irq' declared with attribute 'warn_unused_result' [-Wunused-result]
284 | request_irq(irq, ltq_etop_dma_irq, 0, "etop_rx", priv);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors


vim +/rx_burst_len +265 drivers/net/ethernet/lantiq_etop.c

236
237 static int
238 ltq_etop_hw_init(struct net_device *dev)
239 {
240 struct ltq_etop_priv *priv = netdev_priv(dev);
241 int i;
242
243 ltq_pmu_enable(PMU_PPE);
244
245 switch (priv->pldata->mii_mode) {
246 case PHY_INTERFACE_MODE_RMII:
247 ltq_etop_w32_mask(ETOP_MII_MASK,
248 ETOP_MII_REVERSE, LTQ_ETOP_CFG);
249 break;
250
251 case PHY_INTERFACE_MODE_MII:
252 ltq_etop_w32_mask(ETOP_MII_MASK,
253 ETOP_MII_NORMAL, LTQ_ETOP_CFG);
254 break;
255
256 default:
257 netdev_err(dev, "unknown mii mode %d\n",
258 priv->pldata->mii_mode);
259 return -ENOTSUPP;
260 }
261
262 /* enable crc generation */
263 ltq_etop_w32(PPE32_CGEN, LQ_PPE32_ENET_MAC_CFG);
264
> 265 ltq_dma_init_port(DMA_PORT_ETOP, priv->tx_burst_len, rx_burst_len);
266
267 for (i = 0; i < MAX_DMA_CHAN; i++) {
268 int irq = LTQ_DMA_CH0_INT + i;
269 struct ltq_etop_chan *ch = &priv->ch[i];
270
271 ch->idx = ch->dma.nr = i;
272 ch->dma.dev = &priv->pdev->dev;
273
274 if (IS_TX(i)) {
275 ltq_dma_alloc_tx(&ch->dma);
276 request_irq(irq, ltq_etop_dma_irq, 0, "etop_tx", priv);
277 } else if (IS_RX(i)) {
278 ltq_dma_alloc_rx(&ch->dma);
279 for (ch->dma.desc = 0; ch->dma.desc < LTQ_DESC_NUM;
280 ch->dma.desc++)
281 if (ltq_etop_alloc_skb(ch))
282 return -ENOMEM;
283 ch->dma.desc = 0;
284 request_irq(irq, ltq_etop_dma_irq, 0, "etop_rx", priv);
285 }
286 ch->dma.irq = irq;
287 }
288 return 0;
289 }
290

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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