From: Yufen Yu Date: Thu, 23 Jul 2020 03:29:05 +0000 (-0400) Subject: md/raid5: use do_div() for 64 bit divisions in raid5_sync_request X-Git-Tag: v5.15~3211^2~28^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=83c3e5e17b5e3057ac304383a46e3c485d00ffed;p=platform%2Fkernel%2Flinux-starfive.git md/raid5: use do_div() for 64 bit divisions in raid5_sync_request We get compilation error on 32-bit architectures (e.g. m68k), as: ERROR: modpost: "__udivdi3" [drivers/md/raid456.ko] undefined! Since 'sync_blocks' is defined as u64, use do_div() to fix this error. Fixes: c911c46c017c ("md/raid456: convert macro STRIPE_* to RAID5_STRIPE_*") Signed-off-by: Yufen Yu Signed-off-by: Song Liu --- diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 40961dd..a6ff6e1 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -6104,7 +6104,7 @@ static inline sector_t raid5_sync_request(struct mddev *mddev, sector_t sector_n !md_bitmap_start_sync(mddev->bitmap, sector_nr, &sync_blocks, 1) && sync_blocks >= RAID5_STRIPE_SECTORS(conf)) { /* we can skip this block, and probably more */ - sync_blocks /= RAID5_STRIPE_SECTORS(conf); + do_div(sync_blocks, RAID5_STRIPE_SECTORS(conf)); *skipped = 1; /* keep things rounded to whole stripes */ return sync_blocks * RAID5_STRIPE_SECTORS(conf);