On 7/14/19 11:38 PM, Damien Le Moal wrote: > kbuild test robot gets the following compilation warning using gcc 7.4 > cross compilation for c6x (GCC_VERSION=7.4.0 make.cross ARCH=c6x). > > In file included from include/asm-generic/bug.h:18:0, > from arch/c6x/include/asm/bug.h:12, > from include/linux/bug.h:5, > from include/linux/thread_info.h:12, > from include/asm-generic/current.h:5, > from ./arch/c6x/include/generated/asm/current.h:1, > from include/linux/sched.h:12, > from include/linux/blkdev.h:5, > from drivers//scsi/sd_zbc.c:11: > drivers//scsi/sd_zbc.c: In function 'sd_zbc_read_zones': >>> include/linux/kernel.h:62:48: warning: 'zone_blocks' may be used > uninitialized in this function [-Wmaybe-uninitialized] > #define __round_mask(x, y) ((__typeof__(x))((y)-1)) > ^ > drivers//scsi/sd_zbc.c:464:6: note: 'zone_blocks' was declared here > u32 zone_blocks; > ^~~~~~~~~~~ > > Fix this by initializing the zone_blocks variable to 0. Probably worth noting that this is a false positive, and even if it is, include a Fixes: entry as well. Otherwise obviously looks fine to me. Martin, do you want to pick this one up? -- Jens Axboe
