Re: [PATCH 3/4] leds: Add driver for the ISSI IS31FL32xx family of LED controllers

kbuild test robot
2016-03-03T03:22:22Z

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Hi David,

[auto build test WARNING on j.anaszewski-leds/for-next]
[also build test WARNING on next-20160302]
[cannot apply to v4.5-rc6]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url: https://github.com/0day-ci/linux/commits/David-Rivshin-Allworx/leds-Add-driver-for-the-ISSI-IS31FL32xx-family-of-LED-controllers/20160303-110656
base: https://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds for-next
config: sparc64-allyesconfig (attached as .config)
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=sparc64

All warnings (new ones prefixed by >>):

drivers/leds/leds-is31fl32xx.c: In function 'is31fl32xx_parse_child_dt':
>> drivers/leds/leds-is31fl32xx.c:344:6: warning: passing argument 1 of 'of_property_read_string' discards 'const' qualifier from pointer target type
if (of_property_read_string(child, "label", &cdev->name))
^
In file included from arch/sparc/include/asm/openprom.h:14:0,
from arch/sparc/include/asm/device.h:9,
from include/linux/device.h:30,
from include/linux/i2c.h:30,
from drivers/leds/leds-is31fl32xx.c:17:
include/linux/of.h:299:12: note: expected 'struct device_node *' but argument is of type 'const struct device_node *'
extern int of_property_read_string(struct device_node *np,
^
drivers/leds/leds-is31fl32xx.c:356:2: warning: passing argument 1 of 'of_property_read_string' discards 'const' qualifier from pointer target type
of_property_read_string(child, "linux,default-trigger",
^
In file included from arch/sparc/include/asm/openprom.h:14:0,
from arch/sparc/include/asm/device.h:9,
from include/linux/device.h:30,
from include/linux/i2c.h:30,
from drivers/leds/leds-is31fl32xx.c:17:
include/linux/of.h:299:12: note: expected 'struct device_node *' but argument is of type 'const struct device_node *'
extern int of_property_read_string(struct device_node *np,
^

vim +344 drivers/leds/leds-is31fl32xx.c

328 }
329
330 static inline size_t sizeof_is31fl32xx_priv(int num_leds)
331 {
332 return sizeof(struct is31fl32xx_priv) +
333 (sizeof(struct is31fl32xx_led_data) * num_leds);
334 }
335
336 static int is31fl32xx_parse_child_dt(const struct device *dev,
337 const struct device_node *child,
338 struct is31fl32xx_led_data *led_data)
339 {
340 struct led_classdev *cdev = &led_data->cdev;
341 int ret = 0;
342 u32 reg;
343
> 344 if (of_property_read_string(child, "label", &cdev->name))
345 cdev->name = child->name;
346
347 ret = of_property_read_u32(child, "reg", &reg);
348 if (ret || reg < 1 || reg > led_data->priv->cdef->channels) {
349 dev_err(dev,
350 "Child node %s does not have a valid reg property\n",
351 child->full_name);
352 return -EINVAL;

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