[PATCH v5 2/4] irqchip: Add IMX MU MSI controller driver
kernel test robot
lkp at intel.com
Tue Aug 16 01:39:05 PDT 2022
Hi Frank,
I love your patch! Perhaps something to improve:
[auto build test WARNING on jonmason-ntb/ntb-next]
[also build test WARNING on robh/for-next linus/master v6.0-rc1 next-20220816]
[cannot apply to tip/irq/core]
[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/Frank-Li/PCI-EP-driver-support-MSI-doorbell-from-host/20220816-131930
base: https://github.com/jonmason/ntb ntb-next
config: arm64-randconfig-r025-20220815 (https://download.01.org/0day-ci/archive/20220816/202208161638.7Rn1SHT2-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project aed5e3bea138ce581d682158eb61c27b3cfdd6ec)
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 arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://github.com/intel-lab-lkp/linux/commit/71296e2ad757d90e870b2ab81f2b06b9c76e7c41
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Frank-Li/PCI-EP-driver-support-MSI-doorbell-from-host/20220816-131930
git checkout 71296e2ad757d90e870b2ab81f2b06b9c76e7c41
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/irqchip/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp at intel.com>
All warnings (new ones prefixed by >>):
>> drivers/irqchip/irq-imx-mu-msi.c:295:32: warning: variable 'priv' set but not used [-Wunused-but-set-variable]
struct imx_mu_msi *msi_data, *priv;
^
1 warning generated.
vim +/priv +295 drivers/irqchip/irq-imx-mu-msi.c
288
289 static int __init imx_mu_of_init(struct device_node *dn,
290 struct device_node *parent,
291 const struct imx_mu_dcfg *cfg
292 )
293 {
294 struct platform_device *pdev = of_find_device_by_node(dn);
> 295 struct imx_mu_msi *msi_data, *priv;
296 struct device_link *pd_link_a;
297 struct device_link *pd_link_b;
298 struct resource *res;
299 struct device *pd_a;
300 struct device *pd_b;
301 struct device *dev;
302 int ret;
303 int irq;
304
305 if (!pdev)
306 return -ENODEV;
307
308 dev = &pdev->dev;
309
310 priv = msi_data = devm_kzalloc(&pdev->dev, sizeof(*msi_data), GFP_KERNEL);
311 if (!msi_data)
312 return -ENOMEM;
313
314 msi_data->cfg = cfg;
315
316 msi_data->regs = devm_platform_ioremap_resource_byname(pdev, "processor a-facing");
317 if (IS_ERR(msi_data->regs)) {
318 dev_err(&pdev->dev, "failed to initialize 'regs'\n");
319 return PTR_ERR(msi_data->regs);
320 }
321
322 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "processor b-facing");
323 if (!res)
324 return -EIO;
325
326 msi_data->msiir_addr = res->start + msi_data->cfg->xTR;
327
328 irq = platform_get_irq(pdev, 0);
329 if (irq <= 0)
330 return -ENODEV;
331
332 platform_set_drvdata(pdev, msi_data);
333
334 msi_data->clk = devm_clk_get(dev, NULL);
335 if (IS_ERR(msi_data->clk)) {
336 if (PTR_ERR(msi_data->clk) != -ENOENT)
337 return PTR_ERR(msi_data->clk);
338
339 msi_data->clk = NULL;
340 }
341
342 pd_a = dev_pm_domain_attach_by_name(dev, "processor a-facing");
343 if (IS_ERR(pd_a))
344 return PTR_ERR(pd_a);
345
346 pd_b = dev_pm_domain_attach_by_name(dev, "processor b-facing");
347 if (IS_ERR(pd_b))
348 return PTR_ERR(pd_b);
349
350 pd_link_a = device_link_add(dev, pd_a,
351 DL_FLAG_STATELESS |
352 DL_FLAG_PM_RUNTIME |
353 DL_FLAG_RPM_ACTIVE);
354
355 if (!pd_link_a) {
356 dev_err(dev, "Failed to add device_link to mu a.\n");
357 goto err_pd_a;
358 }
359
360 pd_link_b = device_link_add(dev, pd_b,
361 DL_FLAG_STATELESS |
362 DL_FLAG_PM_RUNTIME |
363 DL_FLAG_RPM_ACTIVE);
364
365
366 if (!pd_link_b) {
367 dev_err(dev, "Failed to add device_link to mu a.\n");
368 goto err_pd_b;
369 }
370
371 ret = imx_mu_msi_domains_init(msi_data, dev);
372 if (ret)
373 goto err_dm_init;
374
375 irq_set_chained_handler_and_data(irq,
376 imx_mu_msi_irq_handler,
377 msi_data);
378
379 pm_runtime_enable(dev);
380
381 return 0;
382
383 err_dm_init:
384 device_link_remove(dev, pd_b);
385 err_pd_b:
386 device_link_remove(dev, pd_a);
387 err_pd_a:
388 return -EINVAL;
389 }
390
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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