Hi Dmitry, [auto build test ERROR on wsa/i2c/for-next] [also build test ERROR on v4.11-rc4 next-20170331] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Dmitry-Torokhov/i2c-use-void-pointers-for-supplying-data-for-reads-and-writes/20170403-074306 base: https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-next config: i386-randconfig-a0-201714 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): drivers/iio/adc/max1363.c: In function 'max1363_probe': >> drivers/iio/adc/max1363.c:1633:12: error: assignment from incompatible pointer type [-Werror=incompatible-pointer-types] st->send = i2c_master_send; ^ drivers/iio/adc/max1363.c:1634:12: error: assignment from incompatible pointer type [-Werror=incompatible-pointer-types] st->recv = i2c_master_recv; ^ Cyclomatic Complexity 1 arch/x86/include/asm/bitops.h:constant_test_bit Cyclomatic Complexity 1 arch/x86/include/asm/bitops.h:variable_test_bit Cyclomatic Complexity 1 arch/x86/include/asm/bitops.h:fls Cyclomatic Complexity 1 arch/x86/include/asm/arch_hweight.h:__arch_hweight32 Cyclomatic Complexity 2 include/linux/bitops.h:hweight_long Cyclomatic Complexity 1 include/linux/log2.h:__ilog2_u32 Cyclomatic Complexity 1 include/linux/kernel.h:kstrtoul Cyclomatic Complexity 1 include/asm-generic/getorder.h:__get_order Cyclomatic Complexity 3 include/linux/bitmap.h:bitmap_copy Cyclomatic Complexity 3 include/linux/bitmap.h:bitmap_subset Cyclomatic Complexity 3 include/linux/bitmap.h:bitmap_weight Cyclomatic Complexity 1 include/linux/err.h:PTR_ERR Cyclomatic Complexity 1 include/linux/err.h:IS_ERR Cyclomatic Complexity 1 include/linux/device.h:devm_kzalloc Cyclomatic Complexity 1 include/linux/device.h:dev_get_drvdata Cyclomatic Complexity 1 include/linux/device.h:dev_set_drvdata Cyclomatic Complexity 1 include/linux/i2c.h:i2c_get_clientdata Cyclomatic Complexity 1 include/linux/i2c.h:i2c_set_clientdata Cyclomatic Complexity 1 include/linux/i2c.h:i2c_get_functionality Cyclomatic Complexity 1 include/linux/i2c.h:i2c_check_functionality Cyclomatic Complexity 28 include/linux/slab.h:kmalloc_index Cyclomatic Complexity 67 include/linux/slab.h:kmalloc_large Cyclomatic Complexity 5 include/linux/slab.h:kmalloc Cyclomatic Complexity 1 include/linux/iio/iio.h:dev_to_iio_dev Cyclomatic Complexity 1 include/linux/iio/iio.h:iio_priv Cyclomatic Complexity 1 include/linux/iio/iio.h:iio_buffer_enabled Cyclomatic Complexity 2 include/linux/iio/buffer.h:iio_push_to_buffers_with_timestamp Cyclomatic Complexity 4 drivers/iio/adc/max1363.c:max1363_match_mode Cyclomatic Complexity 1 drivers/iio/adc/max1363.c:max1363_write_basic_config Cyclomatic Complexity 1 drivers/iio/adc/max1363.c:max1363_set_scan_mode Cyclomatic Complexity 2 drivers/iio/adc/max1363.c:max1363_read_thresh Cyclomatic Complexity 7 drivers/iio/adc/max1363.c:max1363_write_thresh Cyclomatic Complexity 6 drivers/iio/adc/max1363.c:__max1363_check_event_mask Cyclomatic Complexity 2 drivers/iio/adc/max1363.c:max1363_update_scan_mode Cyclomatic Complexity 2 drivers/iio/adc/max1363.c:max1363_initial_setup Cyclomatic Complexity 3 drivers/iio/adc/max1363.c:max1363_alloc_scan_masks Cyclomatic Complexity 8 drivers/iio/adc/max1363.c:max1363_read_single_chan Cyclomatic Complexity 4 drivers/iio/adc/max1363.c:max1363_read_raw Cyclomatic Complexity 2 drivers/iio/adc/max1363.c:max1363_read_event_config Cyclomatic Complexity 5 drivers/iio/adc/max1363.c:max1363_monitor_store_freq Cyclomatic Complexity 16 drivers/iio/adc/max1363.c:max1363_monitor_mode_update Cyclomatic Complexity 6 drivers/iio/adc/max1363.c:max1363_write_event_config Cyclomatic Complexity 1 drivers/iio/adc/max1363.c:max1363_monitor_show_freq Cyclomatic Complexity 2 drivers/iio/adc/max1363.c:max1363_remove Cyclomatic Complexity 19 drivers/iio/adc/max1363.c:max1363_probe Cyclomatic Complexity 2 drivers/iio/adc/max1363.c:max1363_event_handler Cyclomatic Complexity 8 drivers/iio/adc/max1363.c:max1363_trigger_handler Cyclomatic Complexity 3 drivers/iio/adc/max1363.c:max1363_smbus_recv Cyclomatic Complexity 3 drivers/iio/adc/max1363.c:max1363_smbus_send Cyclomatic Complexity 1 drivers/iio/adc/max1363.c:max1363_driver_init Cyclomatic Complexity 1 drivers/iio/adc/max1363.c:max1363_driver_exit cc1: some warnings being treated as errors vim +1633 drivers/iio/adc/max1363.c a405b00e Guenter Roeck 2013-02-03 1617 if (!IS_ERR(vref)) { a405b00e Guenter Roeck 2013-02-03 1618 int vref_uv; a405b00e Guenter Roeck 2013-02-03 1619 a405b00e Guenter Roeck 2013-02-03 1620 ret = regulator_enable(vref); a405b00e Guenter Roeck 2013-02-03 1621 if (ret) a405b00e Guenter Roeck 2013-02-03 1622 goto error_disable_reg; a405b00e Guenter Roeck 2013-02-03 1623 st->vref = vref; a405b00e Guenter Roeck 2013-02-03 1624 vref_uv = regulator_get_voltage(vref); a405b00e Guenter Roeck 2013-02-03 1625 if (vref_uv <= 0) { a405b00e Guenter Roeck 2013-02-03 1626 ret = -EINVAL; a405b00e Guenter Roeck 2013-02-03 1627 goto error_disable_reg; a405b00e Guenter Roeck 2013-02-03 1628 } a405b00e Guenter Roeck 2013-02-03 1629 st->vref_uv = vref_uv; a405b00e Guenter Roeck 2013-02-03 1630 } a405b00e Guenter Roeck 2013-02-03 1631 61bdda69 Vivien Didelot 2013-10-20 1632 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { 61bdda69 Vivien Didelot 2013-10-20 @1633 st->send = i2c_master_send; 61bdda69 Vivien Didelot 2013-10-20 1634 st->recv = i2c_master_recv; 61bdda69 Vivien Didelot 2013-10-20 1635 } else if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE) 61bdda69 Vivien Didelot 2013-10-20 1636 && st->chip_info->bits == 8) { 61bdda69 Vivien Didelot 2013-10-20 1637 st->send = max1363_smbus_send; 61bdda69 Vivien Didelot 2013-10-20 1638 st->recv = max1363_smbus_recv; 61bdda69 Vivien Didelot 2013-10-20 1639 } else { 61bdda69 Vivien Didelot 2013-10-20 1640 ret = -EOPNOTSUPP; 61bdda69 Vivien Didelot 2013-10-20 1641 goto error_disable_reg; :::::: The code at line 1633 was first introduced by commit :::::: 61bdda69222c09efd8943d240cd2a8e0bb659d82 iio:adc:max1363 support SMBus for 8-bit devices :::::: TO: Vivien Didelot :::::: CC: Jonathan Cameron --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation