Re: [PATCH v15 4/5] iommu/arm-smmu: introduction of ACTLR for custom prefetcher settings

[kernel test robot <lkp@intel.com>]

Hi Bibek,

kernel test robot noticed the following build warnings:

[auto build test WARNING on linus/master]
[also build test WARNING on joro-iommu/next v6.11 next-20240920]
[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/Bibek-Kumar-Patro/iommu-arm-smmu-re-enable-context-caching-in-smmu-reset-operation/20240921-000146
base:   linus/master
patch link:    https://lore.kernel.org/r/20240920155813.3434021-5-quic_bibekkum%40quicinc.com
patch subject: [PATCH v15 4/5] iommu/arm-smmu: introduction of ACTLR for custom prefetcher settings
config: arm-qcom_defconfig (https://download.01.org/0day-ci/archive/20240923/202409230343.Q8KnYl2w-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 13.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240923/202409230343.Q8KnYl2w-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409230343.Q8KnYl2w-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c:14:
   drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c: In function 'qcom_smmu_set_actlr_dev':
>> drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c:266:59: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
     266 |         arm_smmu_cb_write(smmu, cbndx, ARM_SMMU_CB_ACTLR, (u64)match->data);
         |                                                           ^
   drivers/iommu/arm/arm-smmu/arm-smmu.h:533:59: note: in definition of macro 'arm_smmu_cb_write'
     533 |         arm_smmu_writel((s), ARM_SMMU_CB((s), (n)), (o), (v))
         |                                                           ^


vim +266 drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c

   254	
   255	static void qcom_smmu_set_actlr_dev(struct device *dev, struct arm_smmu_device *smmu, int cbndx,
   256			const struct of_device_id *client_match)
   257	{
   258		const struct of_device_id *match =
   259				of_match_device(client_match, dev);
   260	
   261		if (!match) {
   262			dev_notice(dev, "no ACTLR settings present\n");
   263			return;
   264		}
   265	
 > 266		arm_smmu_cb_write(smmu, cbndx, ARM_SMMU_CB_ACTLR, (u64)match->data);
   267	}
   268	

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