[staging:staging-testing 41/59] drivers/staging/wfx/main.c:47:14-21: ERROR: PTR_ERR applied after initialization to constant on line 42

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git 
staging-testing
head:   40115bbc40e2fd2de0e01ef2a28e0d09a1b5d0d1
commit: 0096214a59a72b3c3c943e27bd03307324d3ce0f [41/59] staging: wfx: add 
support for I/O access

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <l...@intel.com>


coccinelle warnings: (new ones prefixed by >>)

>> drivers/staging/wfx/main.c:47:14-21: ERROR: PTR_ERR applied after 
>> initialization to constant on line 42

vim +47 drivers/staging/wfx/main.c

    30  
    31  struct gpio_desc *wfx_get_gpio(struct device *dev, int override, const 
char *label)
    32  {
    33          struct gpio_desc *ret;
    34          char label_buf[256];
    35  
    36          if (override >= 0) {
    37                  snprintf(label_buf, sizeof(label_buf), "wfx_%s", label);
    38                  ret = ERR_PTR(devm_gpio_request_one(dev, override, 
GPIOF_OUT_INIT_LOW, label_buf));
    39                  if (!ret)
    40                          ret = gpio_to_desc(override);
    41          } else if (override == -1) {
  > 42                  ret = NULL;
    43          } else {
    44                  ret = devm_gpiod_get(dev, label, GPIOD_OUT_LOW);
    45          }
    46          if (IS_ERR(ret) || !ret) {
  > 47                  if (!ret || PTR_ERR(ret) == -ENOENT)
    48                          dev_warn(dev, "gpio %s is not defined\n", 
label);
    49                  else
    50                          dev_warn(dev, "error while requesting gpio 
%s\n", label);
    51                  ret = NULL;
    52          } else {
    53                  dev_dbg(dev, "using gpio %d for %s\n", 
desc_to_gpio(ret), label);
    54          }
    55          return ret;
    56  }
    57  

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