* [pm:bleeding-edge 102/108] drivers/gpu/drm/xen/xen_drm_front.c:710:42: warning: shift count >= width of type
@ 2021-06-09 19:08 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-06-09 19:08 UTC (permalink / raw)
To: Erik Kaneda
Cc: kbuild-all, clang-built-linux, linux-acpi, devel, linux-pm,
Rafael J. Wysocki
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git bleeding-edge
head: 7604cba9f860bcae8fd95c907ffee8ebeab73bef
commit: f06e8901662d5c5c80f47d1cef6207688ee42e81 [102/108] ACPI: PRM: implement OperationRegion handler for the PlatformRtMechanism subtype
config: x86_64-randconfig-a015-20210608 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project d2012d965d60c3258b3a69d024491698f8aec386)
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 x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/commit/?id=f06e8901662d5c5c80f47d1cef6207688ee42e81
git remote add pm https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git
git fetch --no-tags pm bleeding-edge
git checkout f06e8901662d5c5c80f47d1cef6207688ee42e81
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
In file included from drivers/gpu/drm/xen/xen_drm_front.c:16:
In file included from include/drm/drm_atomic_helper.h:31:
In file included from include/drm/drm_crtc.h:28:
In file included from include/linux/i2c.h:13:
include/linux/acpi.h:135:33: error: field has incomplete type 'struct acpi_prmt_module_header'
struct acpi_prmt_module_header prmt;
^
include/linux/acpi.h:135:9: note: forward declaration of 'struct acpi_prmt_module_header'
struct acpi_prmt_module_header prmt;
^
>> drivers/gpu/drm/xen/xen_drm_front.c:710:42: warning: shift count >= width of type [-Wshift-count-overflow]
ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(64));
^~~~~~~~~~~~~~~~
include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
^ ~~~
1 warning and 1 error generated.
vim +710 drivers/gpu/drm/xen/xen_drm_front.c
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 702
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 703 static int xen_drv_probe(struct xenbus_device *xb_dev,
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 704 const struct xenbus_device_id *id)
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 705 {
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 706 struct xen_drm_front_info *front_info;
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 707 struct device *dev = &xb_dev->dev;
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 708 int ret;
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 709
ee7f5225dc3cc7 Rob Herring 2019-10-08 @710 ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(64));
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 711 if (ret < 0) {
ee7f5225dc3cc7 Rob Herring 2019-10-08 712 DRM_ERROR("Cannot setup DMA mask, ret %d", ret);
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 713 return ret;
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 714 }
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 715
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 716 front_info = devm_kzalloc(&xb_dev->dev,
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 717 sizeof(*front_info), GFP_KERNEL);
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 718 if (!front_info)
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 719 return -ENOMEM;
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 720
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 721 front_info->xb_dev = xb_dev;
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 722 spin_lock_init(&front_info->io_lock);
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 723 INIT_LIST_HEAD(&front_info->dbuf_list);
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 724 dev_set_drvdata(&xb_dev->dev, front_info);
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 725
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 726 return xenbus_switch_state(xb_dev, XenbusStateInitialising);
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 727 }
c575b7eeb89f94 Oleksandr Andrushchenko 2018-04-03 728
:::::: The code at line 710 was first introduced by commit
:::::: ee7f5225dc3cc7c19df1603597532ff34571f895 xen: Stop abusing DT of_dma_configure API
:::::: TO: Rob Herring <robh@kernel.org>
:::::: CC: Boris Ostrovsky <boris.ostrovsky@oracle.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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