* [mkl-can-next:men 1/1] drivers/net/can/men_z192_can.c:482:2: error: implicit declaration of function 'mmiowb'; did you mean '__iowmb'?
@ 2019-11-06 14:34 kbuild test robot
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From: kbuild test robot @ 2019-11-06 14:34 UTC (permalink / raw)
To: kbuild-all
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git men
head: ee2172710a15be7687afaa9033920b97567a8fd3
commit: ee2172710a15be7687afaa9033920b97567a8fd3 [1/1] net: can: Introduce MEN 16Z192-00 CAN controller driver
config: arm-allmodconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.4.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout ee2172710a15be7687afaa9033920b97567a8fd3
# save the attached .config to linux build tree
GCC_VERSION=7.4.0 make.cross ARCH=arm
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
drivers/net/can/men_z192_can.c: In function 'men_z192_xmit':
>> drivers/net/can/men_z192_can.c:482:2: error: implicit declaration of function 'mmiowb'; did you mean '__iowmb'? [-Werror=implicit-function-declaration]
mmiowb();
^~~~~~
__iowmb
cc1: some warnings being treated as errors
vim +482 drivers/net/can/men_z192_can.c
414
415 static int men_z192_xmit(struct sk_buff *skb, struct net_device *ndev)
416 {
417 struct can_frame *cf = (struct can_frame *)skb->data;
418 struct men_z192 *priv = netdev_priv(ndev);
419 struct men_z192_regs __iomem *regs = priv->regs;
420 struct net_device_stats *stats = &ndev->stats;
421 struct men_z192_cf_buf __iomem *cf_buf;
422 u32 data[2] = {0, 0};
423 int status;
424 u32 id;
425
426 if (can_dropped_invalid_skb(ndev, skb))
427 return NETDEV_TX_OK;
428
429 status = readl(®s->rx_tx_sts);
430
431 if (MEN_Z192_TX_BUF_CNT(status) >= 255) {
432 netif_stop_queue(ndev);
433 netdev_err(ndev, "not enough space in TX buffer\n");
434
435 return NETDEV_TX_BUSY;
436 }
437
438 cf_buf = priv->dev_base + MEN_Z192_TX_BUF_START;
439
440 if (cf->can_id & CAN_EFF_FLAG) {
441 /* Extended frame */
442 id = ((cf->can_id & CAN_EFF_MASK) <<
443 MEN_Z192_CFBUF_ID2_SHIFT) & MEN_Z192_CFBUF_ID2;
444
445 id |= (((cf->can_id & CAN_EFF_MASK) >>
446 (CAN_EFF_ID_BITS - CAN_SFF_ID_BITS)) <<
447 MEN_Z192_CFBUF_ID1_SHIFT) & MEN_Z192_CFBUF_ID1;
448
449 id |= MEN_Z192_CFBUF_IDE;
450
451 if (cf->can_id & CAN_RTR_FLAG) {
452 id |= MEN_Z192_CFBUF_SRR;
453 id |= MEN_Z192_CFBUF_E_RTR;
454 }
455 } else {
456 /* Standard frame */
457 id = ((cf->can_id & CAN_SFF_MASK) <<
458 MEN_Z192_CFBUF_ID1_SHIFT) & MEN_Z192_CFBUF_ID1;
459
460 if (cf->can_id & CAN_RTR_FLAG)
461 id |= MEN_Z192_CFBUF_S_RTR;
462 }
463
464 if (cf->can_dlc > 0)
465 data[0] = be32_to_cpup((__be32 *)(cf->data));
466 if (cf->can_dlc > 3)
467 data[1] = be32_to_cpup((__be32 *)(cf->data + 4));
468
469 writel(id, &cf_buf->can_id);
470 writel(cf->can_dlc, &cf_buf->length);
471
472 if (!(cf->can_id & CAN_RTR_FLAG)) {
473 writel(data[0], &cf_buf->data[0]);
474 writel(data[1], &cf_buf->data[1]);
475
476 stats->tx_bytes += cf->can_dlc;
477 }
478
479 /* be sure everything is written to the
480 * device before acknowledge the data.
481 */
> 482 mmiowb();
483
484 /* trigger the transmission */
485 men_z192_ack_tx_pkg(priv, 1);
486
487 stats->tx_packets++;
488
489 kfree_skb(skb);
490
491 return NETDEV_TX_OK;
492 }
493
---
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https://lists.01.org/pipermail/kbuild-all Intel Corporation
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2019-11-06 14:34 [mkl-can-next:men 1/1] drivers/net/can/men_z192_can.c:482:2: error: implicit declaration of function 'mmiowb'; did you mean '__iowmb'? kbuild test robot
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