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Subjectdrivers/firmware/arm_scmi/optee.c:428:20: sparse: sparse: incorrect type in return expression (different address spaces)
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: be2d3ecedd9911fbfd7e55cc9ceac5f8b79ae4cf
commit: 5f90f189a052f6fc46048f6ce29a37b709548b81 firmware: arm_scmi: Add optee transport
date: 5 months ago
config: arm64-randconfig-s031-20220403 (https://download.01.org/0day-ci/archive/20220403/202204032039.TEInlRXP-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5f90f189a052f6fc46048f6ce29a37b709548b81
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 5f90f189a052f6fc46048f6ce29a37b709548b81
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/bus/ drivers/firmware/arm_scmi/ drivers/firmware/meson/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
drivers/firmware/arm_scmi/optee.c:295:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct scmi_shared_mem [noderef] __iomem *shmem @@ got void * @@
drivers/firmware/arm_scmi/optee.c:295:24: sparse: expected struct scmi_shared_mem [noderef] __iomem *shmem
drivers/firmware/arm_scmi/optee.c:295:24: sparse: got void *
drivers/firmware/arm_scmi/optee.c:296:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *p @@ got struct scmi_shared_mem [noderef] __iomem *shmem @@
drivers/firmware/arm_scmi/optee.c:296:23: sparse: expected void *p
drivers/firmware/arm_scmi/optee.c:296:23: sparse: got struct scmi_shared_mem [noderef] __iomem *shmem
>> drivers/firmware/arm_scmi/optee.c:428:20: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected struct scmi_shared_mem * @@ got struct scmi_shared_mem [noderef] __iomem *shmem @@
drivers/firmware/arm_scmi/optee.c:428:20: sparse: expected struct scmi_shared_mem *
drivers/firmware/arm_scmi/optee.c:428:20: sparse: got struct scmi_shared_mem [noderef] __iomem *shmem
>> drivers/firmware/arm_scmi/optee.c:440:26: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct scmi_shared_mem [noderef] __iomem *shmem @@ got struct scmi_shared_mem *shmem @@
drivers/firmware/arm_scmi/optee.c:440:26: sparse: expected struct scmi_shared_mem [noderef] __iomem *shmem
drivers/firmware/arm_scmi/optee.c:440:26: sparse: got struct scmi_shared_mem *shmem
drivers/firmware/arm_scmi/optee.c:444:51: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct scmi_shared_mem [noderef] __iomem *shmem @@ got struct scmi_shared_mem *shmem @@
drivers/firmware/arm_scmi/optee.c:444:51: sparse: expected struct scmi_shared_mem [noderef] __iomem *shmem
drivers/firmware/arm_scmi/optee.c:444:51: sparse: got struct scmi_shared_mem *shmem
drivers/firmware/arm_scmi/optee.c:456:30: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct scmi_shared_mem [noderef] __iomem *shmem @@ got struct scmi_shared_mem *shmem @@
drivers/firmware/arm_scmi/optee.c:456:30: sparse: expected struct scmi_shared_mem [noderef] __iomem *shmem
drivers/firmware/arm_scmi/optee.c:456:30: sparse: got struct scmi_shared_mem *shmem
drivers/firmware/arm_scmi/optee.c:465:32: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct scmi_shared_mem [noderef] __iomem *shmem @@ got struct scmi_shared_mem *shmem @@
drivers/firmware/arm_scmi/optee.c:465:32: sparse: expected struct scmi_shared_mem [noderef] __iomem *shmem
drivers/firmware/arm_scmi/optee.c:465:32: sparse: got struct scmi_shared_mem *shmem

vim +428 drivers/firmware/arm_scmi/optee.c

421
422 static struct scmi_shared_mem *get_channel_shm(struct scmi_optee_channel *chan,
423 struct scmi_xfer *xfer)
424 {
425 if (!chan)
426 return NULL;
427
> 428 return chan->shmem;
429 }
430
431
432 static int scmi_optee_send_message(struct scmi_chan_info *cinfo,
433 struct scmi_xfer *xfer)
434 {
435 struct scmi_optee_channel *channel = cinfo->transport_info;
436 struct scmi_shared_mem *shmem = get_channel_shm(channel, xfer);
437 int ret;
438
439 mutex_lock(&channel->mu);
> 440 shmem_tx_prepare(shmem, xfer);
441
442 ret = invoke_process_smt_channel(channel);
443
444 scmi_rx_callback(cinfo, shmem_read_header(shmem), NULL);
445 mutex_unlock(&channel->mu);
446
447 return ret;
448 }
449

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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