* [xilinx-xlnx:xlnx_rebase_v5.15_LTS_2022.1_update 627/1104] drivers/gpu/drm/xlnx/xlnx_bridge.c:339:22: sparse: sparse: incorrect type in argument 1 (different address spaces)
@ 2022-06-04 19:43 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2022-06-04 19:43 UTC (permalink / raw)
To: Hyun Kwon; +Cc: kbuild-all, linux-arm-kernel, Michal Simek
tree: https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.15_LTS_2022.1_update
head: 9203af14476dce35e697e2c3f2d6d2aa7ee0e77a
commit: e9b2e76207572317b0b92e330a639c8a8ebe06ff [627/1104] drm: xlnx: drv: Add Xilinx bridge support
config: m68k-randconfig-s032-20220605 (https://download.01.org/0day-ci/archive/20220605/202206050337.2ZUVpmxB-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 11.3.0
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: v0.6.4-18-g56afb504-dirty
# https://github.com/Xilinx/linux-xlnx/commit/e9b2e76207572317b0b92e330a639c8a8ebe06ff
git remote add xilinx-xlnx https://github.com/Xilinx/linux-xlnx
git fetch --no-tags xilinx-xlnx xlnx_rebase_v5.15_LTS_2022.1_update
git checkout e9b2e76207572317b0b92e330a639c8a8ebe06ff
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=m68k SHELL=/bin/bash drivers/gpu/drm/xlnx/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/xlnx/xlnx_bridge.c:339:22: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected char const * @@ got char const [noderef] __user *buf @@
drivers/gpu/drm/xlnx/xlnx_bridge.c:339:22: sparse: expected char const *
drivers/gpu/drm/xlnx/xlnx_bridge.c:339:22: sparse: got char const [noderef] __user *buf
drivers/gpu/drm/xlnx/xlnx_bridge.c:341:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected char const * @@ got char const [noderef] __user *buf @@
drivers/gpu/drm/xlnx/xlnx_bridge.c:341:29: sparse: expected char const *
drivers/gpu/drm/xlnx/xlnx_bridge.c:341:29: sparse: got char const [noderef] __user *buf
drivers/gpu/drm/xlnx/xlnx_bridge.c:343:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected char const * @@ got char const [noderef] __user *buf @@
drivers/gpu/drm/xlnx/xlnx_bridge.c:343:29: sparse: expected char const *
drivers/gpu/drm/xlnx/xlnx_bridge.c:343:29: sparse: got char const [noderef] __user *buf
vim +339 drivers/gpu/drm/xlnx/xlnx_bridge.c
330
331 static ssize_t xlnx_bridge_debugfs_write(struct file *f, const char __user *buf,
332 size_t size, loff_t *pos)
333 {
334 struct xlnx_bridge *bridge = f->f_inode->i_private;
335
336 if (*pos != 0 || size <= 0)
337 return -EINVAL;
338
> 339 if (!strncmp(buf, "enable", 5)) {
340 xlnx_bridge_enable(bridge);
341 } else if (!strncmp(buf, "disable", 6)) {
342 xlnx_bridge_disable(bridge);
343 } else if (!strncmp(buf, "set_input", 3)) {
344 char *cmd, **tmp;
345 char *w, *h, *bus_fmt;
346 u32 width = 0, height = 0, fmt = 0;
347 int ret;
348
349 cmd = kzalloc(size, GFP_KERNEL);
350 if (!cmd)
351 return -ENOMEM;
352
353 ret = strncpy_from_user(cmd, buf, size);
354 if (ret < 0) {
355 pr_err("%s %d failed to copy the command %s\n",
356 __func__, __LINE__, buf);
357 kfree(cmd);
358 return ret;
359 }
360
361 tmp = &cmd;
362 strsep(tmp, " ");
363 w = strsep(tmp, " ");
364 h = strsep(tmp, " ");
365 bus_fmt = strsep(tmp, " ");
366 if (w && h && bus_fmt) {
367 ret = kstrtouint(w, 0, &width);
368 ret |= kstrtouint(h, 0, &height);
369 ret |= kstrtouint(bus_fmt, 0, &fmt);
370 }
371
372 kfree(cmd);
373 if (ret) {
374 pr_err("%s %d invalid command: %s\n",
375 __func__, __LINE__, buf);
376 return -EINVAL;
377 }
378 xlnx_bridge_set_input(bridge, width, height, fmt);
379 }
380
381 return size;
382 }
383
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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2022-06-04 19:43 [xilinx-xlnx:xlnx_rebase_v5.15_LTS_2022.1_update 627/1104] drivers/gpu/drm/xlnx/xlnx_bridge.c:339:22: sparse: sparse: incorrect type in argument 1 (different address spaces) kernel test robot
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