Re: [PATCH 08/13] eeprom: at24: call read and write routines via function pointers

From: kbuild test robot
Date: Thu Mar 24 2016 - 11:17:26 EST


Hi Bartosz,

[auto build test WARNING on next-20160324]
[cannot apply to v4.5-rc7 v4.5-rc6 v4.5-rc5 v4.5]
[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/Bartosz-Golaszewski/eeprom-support-for-at24cs-and-at24mac/20160324-230008
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/misc/eeprom/at24.c: In function 'at24_probe':
>> drivers/misc/eeprom/at24.c:617:18: warning: assignment from incompatible pointer type
at24->read_func = at24_read;
^
drivers/misc/eeprom/at24.c:618:19: warning: assignment from incompatible pointer type
at24->write_func = at24_write;
^

vim +617 drivers/misc/eeprom/at24.c

601 num_addresses = 8;
602 else
603 num_addresses = DIV_ROUND_UP(chip.byte_len,
604 (chip.flags & AT24_FLAG_ADDR16) ? 65536 : 256);
605
606 at24 = devm_kzalloc(&client->dev, sizeof(struct at24_data) +
607 num_addresses * sizeof(struct i2c_client *), GFP_KERNEL);
608 if (!at24)
609 return -ENOMEM;
610
611 mutex_init(&at24->wrbuf_lock);
612 at24->use_smbus = use_smbus;
613 at24->use_smbus_write = use_smbus_write;
614 at24->chip = chip;
615 at24->num_addresses = num_addresses;
616
> 617 at24->read_func = at24_read;
618 at24->write_func = at24_write;
619
620 writable = !(chip.flags & AT24_FLAG_READONLY);
621 if (writable) {
622 if (!use_smbus || use_smbus_write) {
623
624 unsigned write_max = chip.page_size;
625

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