Hi Fam, [auto build test WARNING on scsi/for-next] [also build test WARNING on v4.11-rc4 next-20170327] [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/Fam-Zheng/sd-Consider-max_xfer_blocks-if-opt_xfer_blocks-is-unusable/20170328-141853 base: https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git for-next config: x86_64-randconfig-x016-201713 (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=x86_64 All warnings (new ones prefixed by >>): In file included from include/linux/list.h:8:0, from include/linux/module.h:9, from drivers//scsi/sd.c:35: drivers//scsi/sd.c: In function 'sd_revalidate_disk': include/linux/kernel.h:755:16: warning: comparison of distinct pointer types lacks a cast (void) (&min1 == &min2); \ ^ include/linux/kernel.h:758:2: note: in expansion of macro '__min' __min(typeof(x), typeof(y), \ ^~~~~ >> include/linux/kernel.h:783:39: note: in expansion of macro 'min' __x == 0 ? __y : ((__y == 0) ? __x : min(__x, __y)); }) ^~~ >> drivers//scsi/sd.c:2960:11: note: in expansion of macro 'min_not_zero' rw_max = min_not_zero(rw_max, logical_to_sectors(sdp, dev_max)); ^~~~~~~~~~~~ -- In file included from include/linux/list.h:8:0, from include/linux/module.h:9, from drivers/scsi/sd.c:35: drivers/scsi/sd.c: In function 'sd_revalidate_disk': include/linux/kernel.h:755:16: warning: comparison of distinct pointer types lacks a cast (void) (&min1 == &min2); \ ^ include/linux/kernel.h:758:2: note: in expansion of macro '__min' __min(typeof(x), typeof(y), \ ^~~~~ >> include/linux/kernel.h:783:39: note: in expansion of macro 'min' __x == 0 ? __y : ((__y == 0) ? __x : min(__x, __y)); }) ^~~ drivers/scsi/sd.c:2960:11: note: in expansion of macro 'min_not_zero' rw_max = min_not_zero(rw_max, logical_to_sectors(sdp, dev_max)); ^~~~~~~~~~~~ vim +/min_not_zero +2960 drivers//scsi/sd.c 2944 dev_max = min_not_zero(dev_max, sdkp->max_xfer_blocks); 2945 q->limits.max_dev_sectors = logical_to_sectors(sdp, dev_max); 2946 2947 /* 2948 * Use the device's preferred I/O size for reads and writes 2949 * unless the reported value is unreasonably small, large, or 2950 * garbage. 2951 */ 2952 if (sdkp->opt_xfer_blocks && 2953 sdkp->opt_xfer_blocks <= dev_max && 2954 sdkp->opt_xfer_blocks <= SD_DEF_XFER_BLOCKS && 2955 logical_to_bytes(sdp, sdkp->opt_xfer_blocks) >= PAGE_SIZE) { 2956 q->limits.io_opt = logical_to_bytes(sdp, sdkp->opt_xfer_blocks); 2957 rw_max = logical_to_sectors(sdp, sdkp->opt_xfer_blocks); 2958 } else 2959 rw_max = BLK_DEF_MAX_SECTORS; > 2960 rw_max = min_not_zero(rw_max, logical_to_sectors(sdp, dev_max)); 2961 2962 /* Combine with controller limits */ 2963 q->limits.max_sectors = min(rw_max, queue_max_hw_sectors(q)); 2964 2965 set_capacity(disk, logical_to_sectors(sdp, sdkp->capacity)); 2966 sd_config_write_same(sdkp); 2967 kfree(buffer); 2968 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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