3:29 a.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 2052923327794192c5d884623b5ee5fec1867bda
commit: c40eadc74f43c5d41c3ae94081248c18bf606cb3 [3480/6773] bus: mhi: Add MHI PCI support
for WWAN modems
config: powerpc64-randconfig-r011-20201118 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project
b2613fb2f0f53691dd0211895afbb9413457fca7)
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
# install powerpc64 cross compiling tool for clang build
# apt-get install binutils-powerpc64-linux-gnu
#
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi...
git remote add linux-next
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout c40eadc74f43c5d41c3ae94081248c18bf606cb3
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>):
> drivers/bus/mhi/pci_generic.c:276:25: warning: implicit
conversion from 'unsigned long long' to 'dma_addr_t' (aka 'unsigned
int') changes value from 18446744073709551615 to 4294967295 [-Wconstant-conversion]
mhi_cntrl->iova_stop = DMA_BIT_MASK(info->dma_data_width);
~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/dma-mapping.h:76:40: note: expanded from macro 'DMA_BIT_MASK'
#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
^~~~~
1 warning generated.
vim +276 drivers/bus/mhi/pci_generic.c
259
260 static int mhi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
261 {
262 const struct mhi_pci_dev_info *info = (struct mhi_pci_dev_info *)
id->driver_data;
263 const struct mhi_controller_config *mhi_cntrl_config;
264 struct mhi_controller *mhi_cntrl;
265 int err;
266
267 dev_dbg(&pdev->dev, "MHI PCI device found: %s\n",
info->name);
268
269 mhi_cntrl = mhi_alloc_controller();
270 if (!mhi_cntrl)
271 return -ENOMEM;
272
273 mhi_cntrl_config = info->config;
274 mhi_cntrl->cntrl_dev = &pdev->dev;
275 mhi_cntrl->iova_start = 0;
276 mhi_cntrl->iova_stop = DMA_BIT_MASK(info->dma_data_width);
277 mhi_cntrl->fw_image = info->fw;
278 mhi_cntrl->edl_image = info->edl;
279
280 mhi_cntrl->read_reg = mhi_pci_read_reg;
281 mhi_cntrl->write_reg = mhi_pci_write_reg;
282 mhi_cntrl->status_cb = mhi_pci_status_cb;
283 mhi_cntrl->runtime_get = mhi_pci_runtime_get;
284 mhi_cntrl->runtime_put = mhi_pci_runtime_put;
285
286 err = mhi_pci_claim(mhi_cntrl, info->bar_num,
DMA_BIT_MASK(info->dma_data_width));
287 if (err)
288 goto err_release;
289
290 err = mhi_pci_get_irqs(mhi_cntrl, mhi_cntrl_config);
291 if (err)
292 goto err_release;
293
294 pci_set_drvdata(pdev, mhi_cntrl);
295
296 err = mhi_register_controller(mhi_cntrl, mhi_cntrl_config);
297 if (err)
298 goto err_release;
299
300 /* MHI bus does not power up the controller by default */
301 err = mhi_prepare_for_power_up(mhi_cntrl);
302 if (err) {
303 dev_err(&pdev->dev, "failed to prepare MHI controller\n");
304 goto err_unregister;
305 }
306
307 err = mhi_sync_power_up(mhi_cntrl);
308 if (err) {
309 dev_err(&pdev->dev, "failed to power up MHI controller\n");
310 goto err_unprepare;
311 }
312
313 return 0;
314
315 err_unprepare:
316 mhi_unprepare_after_power_down(mhi_cntrl);
317 err_unregister:
318 mhi_unregister_controller(mhi_cntrl);
319 err_release:
320 mhi_free_controller(mhi_cntrl);
321
322 return err;
323 }
324
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org