Re: [PATCH v2 1/8] firmware: arm_scmi: Introduce setup_shmem_iomap

kernel test robot
2024-07-12T19:44:49Z

Hi Cristian,

kernel test robot noticed the following build warnings:

[auto build test WARNING on soc/for-next]
[also build test WARNING on next-20240712]
[cannot apply to linus/master v6.10-rc7]
[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/Cristian-Marussi/firmware-arm_scmi-Introduce-setup_shmem_iomap/20240711-062033
base: https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git for-next
patch link: https://lore.kernel.org/r/20240710173153.4060457-2-cristian.marussi%40arm.com
patch subject: [PATCH v2 1/8] firmware: arm_scmi: Introduce setup_shmem_iomap
config: arm64-randconfig-r132-20240712 (https://download.01.org/0day-ci/archive/20240713/202407130355.IWguWKJm-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce: (https://download.01.org/0day-ci/archive/20240713/202407130355.IWguWKJm-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/202407130355.IWguWKJm-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/firmware/arm_scmi/shmem.c:153:31: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void [noderef] __iomem * @@ got void * @@
drivers/firmware/arm_scmi/shmem.c:153:31: sparse: expected void [noderef] __iomem *
drivers/firmware/arm_scmi/shmem.c:153:31: sparse: got void *
drivers/firmware/arm_scmi/shmem.c:156:31: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void [noderef] __iomem * @@ got void * @@
drivers/firmware/arm_scmi/shmem.c:156:31: sparse: expected void [noderef] __iomem *
drivers/firmware/arm_scmi/shmem.c:156:31: sparse: got void *
drivers/firmware/arm_scmi/shmem.c:165:31: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void [noderef] __iomem * @@ got void * @@
drivers/firmware/arm_scmi/shmem.c:165:31: sparse: expected void [noderef] __iomem *
drivers/firmware/arm_scmi/shmem.c:165:31: sparse: got void *
drivers/firmware/arm_scmi/shmem.c:172:31: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void [noderef] __iomem * @@ got void * @@
drivers/firmware/arm_scmi/shmem.c:172:31: sparse: expected void [noderef] __iomem *
drivers/firmware/arm_scmi/shmem.c:172:31: sparse: got void *

vim +153 drivers/firmware/arm_scmi/shmem.c

138
139 void __iomem *setup_shmem_iomap(struct scmi_chan_info *cinfo,
140 struct device *dev, bool tx,
141 struct resource *res)
142 {
143 struct device_node *shmem __free(device_node);
144 const char *desc = tx ? "Tx" : "Rx";
145 int ret, idx = tx ? 0 : 1;
146 struct device *cdev = cinfo->dev;
147 struct resource lres = {};
148 resource_size_t size;
149 void __iomem *addr;
150
151 shmem = of_parse_phandle(cdev->of_node, "shmem", idx);
152 if (!shmem)
> 153 return ERR_PTR(-ENODEV);

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