| Message ID | 20190715053833.5973-1-damien.lemoal@wdc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | scsi: sd_zbc: Fix compilation warning | expand |
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, > Otherwise obviously looks fine to me. Martin, do you want to pick this > one up? Yep, I'll merge it.
On 2019/07/16 23:34, Martin K. Petersen wrote: > > Jens, > >> Otherwise obviously looks fine to me. Martin, do you want to pick this >> one up? > > Yep, I'll merge it. > Martin, Do you want me to send a new version with updated commit message and Fixes tag ? Or will you fix that when applying ? Best regards.
Damien, > Do you want me to send a new version with updated commit message and > Fixes tag ? Or will you fix that when applying ? Please send me a tweaked one and I'll apply it right away.
diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c index db16c19e05c4..5d6ff3931632 100644 --- a/drivers/scsi/sd_zbc.c +++ b/drivers/scsi/sd_zbc.c @@ -461,7 +461,7 @@ int sd_zbc_read_zones(struct scsi_disk *sdkp, unsigned char *buf) { struct gendisk *disk = sdkp->disk; unsigned int nr_zones; - u32 zone_blocks; + u32 zone_blocks = 0; int ret; if (!sd_is_zoned(sdkp))
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. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> --- drivers/scsi/sd_zbc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)