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SubjectRe: [dm-devel] next-20200514 - build issue in drivers/md/dm-zoned-target.c
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On Sat, 2020-05-16 at 07:19 -0400, Valdis Klētnieks wrote:
> Am seeing a build error in next-0514. -0420 built OK.
> building a 'make allmodconfig' on a RPi4 in 32-bit mode.
>
> MODPOST 7575 modules
> ERROR: modpost: "__aeabi_uldivmod" [drivers/md/dm-zoned.ko]
> undefined!
>
> objdump and 'make drivers/md/dm-zoned-target.s' tells
> me that the problem is in function dmz_fixup_devices(), near here:
>
> @ drivers/md/dm-zoned-target.c:806: reg_dev->nr_zones =
> DIV_ROUND_UP(reg_dev->capacity,
> ldr r0, [r6, #56] @ reg_dev_166->capacity, reg_dev_166-
> >capacity
> adds r1, r3, r1 @ tmp316, _227, reg_dev_166->capacity
> adc r0, r2, r0 @ tmp315, _227, reg_dev_166->capacity
> subs r1, r1, #1 @, tmp316,
> @ drivers/md/dm-zoned-target.c:805: reg_dev-
> >zone_nr_sectors = zoned_dev->zone_nr_sectors;
> strd r2, [r6, #80] @, reg_dev,
> @ drivers/md/dm-zoned-target.c:806: reg_dev->nr_zones =
> DIV_ROUND_UP(reg_dev->capacity,
> sbc r0, r0, #0 @, tmp315,
> bl __aeabi_uldivmod @
> @ drivers/md/dm-zoned-target.c:806: reg_dev->nr_zones =
> DIV_ROUND_UP(reg_dev->capacity,
> str r1, [r6, #64] @ tmp306, reg_dev_166->nr_zones
>
> git blame points at this commit:
>
> commit 70978208ec91d798066f4c291bc98ff914bea222
> Author: Hannes Reinecke <hare@suse.de>
> Date: Mon May 11 10:24:30 2020 +0200
>
> dm zoned: metadata version 2
>
> Reverting that commit lets the build complete.

That's because the DIV_ROUND_UP in the patch should actually be
DIV_ROUND_UP_SECTOR_T I think.

James
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