Hi Vadim, [auto build test WARNING on wsa/i2c/for-next] [also build test WARNING on v4.8-rc3 next-20160825] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] [Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on] [Check https://git-scm.com/docs/git-format-patch for more information] url: https://github.com/0day-ci/linux/commits/vadimp-mellanox-com/i2c-add-master-driver-for-mellanox-systems/20160828-225625 base: https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-next config: m68k-allmodconfig (attached as .config) compiler: m68k-linux-gcc (GCC) 4.9.0 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=m68k All warnings (new ones prefixed by >>): In file included from arch/m68k/include/asm/io_mm.h:26:0, from arch/m68k/include/asm/io.h:4, from include/linux/io.h:25, from drivers/i2c/muxes/i2c-mux-mlxcpld.c:42: drivers/i2c/muxes/i2c-mux-mlxcpld.c: In function 'mlxcpld_mux_reg_write': arch/m68k/include/asm/raw_io.h:43:32: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] #define out_8(addr,b) (void)((*(__force volatile u8 *) (addr)) = (b)) ^ arch/m68k/include/asm/io_mm.h:396:72: note: in expansion of macro 'out_8' #define outb(val, port) ((port) < 1024 ? isa_rom_outb((val), (port)) : out_8((port), (val))) ^ >> drivers/i2c/muxes/i2c-mux-mlxcpld.c:164:3: note: in expansion of macro 'outb' outb(val, pdata->addr); /* addr = CPLD base + offset */ ^ vim +/outb +164 drivers/i2c/muxes/i2c-mux-mlxcpld.c 36 #include <linux/version.h> 37 #include <linux/init.h> 38 #include <linux/slab.h> 39 #include <linux/device.h> 40 #include <linux/i2c.h> 41 #include <linux/i2c-mux.h> > 42 #include <linux/io.h> 43 #include <linux/platform_device.h> 44 #include <linux/i2c/mlxcpld.h> 45 46 #define CPLD_MUX_MAX_NCHANS 8 47 #define CPLD_MUX_EXT_MAX_NCHANS 24 48 49 /* 50 * mlxcpld_mux types - kind of mux supported by driver: 51 * @mlxcpld_mux_tor - LPC access; 8 channels. 52 * @mlxcpld_mux_mgmt - LPC access; 8 channels. 53 * @mlxcpld_mux_mgmt_ext - LPC access; 24 channels. 54 * @mlxcpld_mux_module - I2C access; 8 channels/legs. 55 */ 56 enum mlxcpld_mux_type { 57 mlxcpld_mux_tor, 58 mlxcpld_mux_mgmt, 59 mlxcpld_mux_mgmt_ext, 60 mlxcpld_mux_module, 61 }; 62 63 /* mlxcpld_mux_type - underlying physical bus, to which device is connected: 64 * @lpc_access - LPC connected CPLD device 65 * @i2c_access - I2C connected CPLD device 66 */ 67 enum mlxcpld_mux_access_type { 68 lpc_access, 69 i2c_access, 70 }; 71 72 /* mlxcpld_mux - mux control structure: 73 * @type - mux type 74 * @last_chan - last register value 75 * @client - I2C device client 76 */ 77 struct mlxcpld_mux { 78 enum mlxcpld_mux_type type; 79 u8 last_chan; 80 struct i2c_client *client; 81 }; 82 83 /* mlxcpld_mux_desc - mux descriptor structure: 84 * @nchans - number of channels 85 * @muxtype - physical mux type (LPC or I2C) 86 */ 87 struct mlxcpld_mux_desc { 88 u8 nchans; 89 enum mlxcpld_mux_access_type muxtype; 90 }; 91 92 /* MUX logic description. 93 * This logic can be applied for LPC attached CPLD and fro I2C attached CPLD. 94 * Driver can support different mux control logic, according to CPLD 95 * implementation. 96 * 97 * Connectivity schema. 98 * 99 * i2c-mlxcpld Digital Analog 100 * driver 101 * *--------* * -> mux1 (virt bus2) -> mux -> | 102 * | I2CLPC | i2c physical * -> mux2 (virt bus3) -> mux -> | 103 * | bridge | bus 1 *---------* | 104 * | logic |---------------------> * mux reg * | 105 * | in CPLD| *---------* | 106 * *--------* i2c-mux-mlxpcld ^ * -> muxn (virt busn) -> mux -> | 107 * | driver | | 108 * | *---------------* | Devices 109 * | * CPLD (LPC bus)* select | 110 * | * registers for *--------* 111 * | * mux selection * deselect 112 * | *---------------* 113 * | | 114 * <--------> <-----------> 115 * i2c cntrl Board cntrl reg 116 * reg space space (mux select, 117 * | IO, LED, WD, info) 118 * | | *-----* *-----* 119 * *------------- LPC bus --------------| PCH |---| CPU | 120 * *-----* *-----* 121 * 122 */ 123 static const struct mlxcpld_mux_desc muxes[] = { 124 [mlxcpld_mux_tor] = { 125 .nchans = CPLD_MUX_MAX_NCHANS, 126 .muxtype = lpc_access, 127 }, 128 [mlxcpld_mux_mgmt] = { 129 .nchans = CPLD_MUX_MAX_NCHANS, 130 .muxtype = lpc_access, 131 }, 132 [mlxcpld_mux_mgmt_ext] = { 133 .nchans = CPLD_MUX_EXT_MAX_NCHANS, 134 .muxtype = lpc_access, 135 }, 136 [mlxcpld_mux_module] = { 137 .nchans = CPLD_MUX_MAX_NCHANS, 138 .muxtype = i2c_access, 139 }, 140 }; 141 142 static const struct i2c_device_id mlxcpld_mux_id[] = { 143 { "mlxcpld_mux_tor", mlxcpld_mux_tor }, 144 { "mlxcpld_mux_mgmt", mlxcpld_mux_mgmt }, 145 { "mlxcpld_mux_mgmt_ext", mlxcpld_mux_mgmt_ext }, 146 { "mlxcpld_mux_module", mlxcpld_mux_module }, 147 { } 148 }; 149 MODULE_DEVICE_TABLE(i2c, mlxcpld_mux_id); 150 151 /* Write to mux register. Don't use i2c_transfer() and 152 * i2c_smbus_xfer() for this as they will try to lock adapter a second time 153 */ 154 static int mlxcpld_mux_reg_write(struct i2c_adapter *adap, 155 struct i2c_client *client, u8 val, 156 enum mlxcpld_mux_access_type muxtype) 157 { 158 struct mlxcpld_mux_platform_data *pdata = 159 dev_get_platdata(&client->dev); 160 int ret = -ENODEV; 161 162 switch (muxtype) { 163 case lpc_access: > 164 outb(val, pdata->addr); /* addr = CPLD base + offset */ 165 ret = 1; 166 break; 167 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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