Hi Greentime, I love your patch! Perhaps something to improve: [auto build test WARNING on tip/timers/core] [cannot apply to linus/master v4.15-rc4 next-20171220] [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/Greentime-Hu/Andes-nds32-Linux-Kernel/20171220-155937 config: sparc64-allyesconfig (attached as .config) compiler: sparc64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/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/net/ethernet/faraday/ftmac100.c: In function 'ftmac100_rxdes_set_page': >> drivers/net/ethernet/faraday/ftmac100.c:288:18: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] rxdes->rxdes3 = (unsigned int)page; ^ drivers/net/ethernet/faraday/ftmac100.c: In function 'ftmac100_rxdes_get_page': >> drivers/net/ethernet/faraday/ftmac100.c:293:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] return (struct page *)rxdes->rxdes3; ^ drivers/net/ethernet/faraday/ftmac100.c: In function 'ftmac100_txdes_set_skb': drivers/net/ethernet/faraday/ftmac100.c:548:18: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] txdes->txdes3 = (unsigned int)skb; ^ drivers/net/ethernet/faraday/ftmac100.c: In function 'ftmac100_txdes_get_skb': drivers/net/ethernet/faraday/ftmac100.c:553:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] return (struct sk_buff *)txdes->txdes3; ^ vim +288 drivers/net/ethernet/faraday/ftmac100.c 8d77c036 drivers/net/ftmac100.c Po-Yu Chuang 2011-02-28 281 8d77c036 drivers/net/ftmac100.c Po-Yu Chuang 2011-02-28 282 /* 8d77c036 drivers/net/ftmac100.c Po-Yu Chuang 2011-02-28 283 * rxdes3 is not used by hardware. We use it to keep track of page. 8d77c036 drivers/net/ftmac100.c Po-Yu Chuang 2011-02-28 284 * Since hardware does not touch it, we can skip cpu_to_le32()/le32_to_cpu(). 8d77c036 drivers/net/ftmac100.c Po-Yu Chuang 2011-02-28 285 */ 8d77c036 drivers/net/ftmac100.c Po-Yu Chuang 2011-02-28 286 static void ftmac100_rxdes_set_page(struct ftmac100_rxdes *rxdes, struct page *page) 8d77c036 drivers/net/ftmac100.c Po-Yu Chuang 2011-02-28 287 { 8d77c036 drivers/net/ftmac100.c Po-Yu Chuang 2011-02-28 @288 rxdes->rxdes3 = (unsigned int)page; 8d77c036 drivers/net/ftmac100.c Po-Yu Chuang 2011-02-28 289 } 8d77c036 drivers/net/ftmac100.c Po-Yu Chuang 2011-02-28 290 8d77c036 drivers/net/ftmac100.c Po-Yu Chuang 2011-02-28 291 static struct page *ftmac100_rxdes_get_page(struct ftmac100_rxdes *rxdes) 8d77c036 drivers/net/ftmac100.c Po-Yu Chuang 2011-02-28 292 { 8d77c036 drivers/net/ftmac100.c Po-Yu Chuang 2011-02-28 @293 return (struct page *)rxdes->rxdes3; 8d77c036 drivers/net/ftmac100.c Po-Yu Chuang 2011-02-28 294 } 8d77c036 drivers/net/ftmac100.c Po-Yu Chuang 2011-02-28 295 :::::: The code at line 288 was first introduced by commit :::::: 8d77c036b57cf813d838f859e11b6a188acdb1fb net: add Faraday FTMAC100 10/100 Ethernet driver :::::: TO: Po-Yu Chuang <ratbert@xxxxxxxxxxxxxxxx> :::::: CC: David S. Miller <davem@xxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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