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drm/amd/display: Fix 32-bit divide error in wait_for_alt_mode

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When building arm32 allyesconfig:

ld.lld: error: undefined symbol: __aeabi_uldivmod
>>> referenced by dc_link.c
>>> gpu/drm/amd/display/dc/core/dc_link.o:(wait_for_alt_mode) in archive drivers/built-in.a
>>> referenced by dc_link.c
>>> gpu/drm/amd/display/dc/core/dc_link.o:(wait_for_alt_mode) in archive drivers/built-in.a

time_taken_in_ns is of type unsigned long long so we need to use div_u64
to avoid this error.

Fixes: b5b1f45549 ("drm/amd/display: Enable type C hotplug")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nathan Chancellor 2019-08-20 16:57:13 -07:00 • committed by Alex Deucher
parent 5a6a4c9d1b
commit b859c579cd
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/display/dc/core/dc_link.c
View file

@ -721,7 +721,7 @@ bool wait_for_alt_mode(struct dc_link *link)
time_taken_in_ns = dm_get_elapse_time_in_ns(
link->ctx, finish_timestamp, enter_timestamp);
DC_LOG_WARNING("Alt mode entered finished after %llu ms\n",
time_taken_in_ns / 1000000);
div_u64(time_taken_in_ns, 1000000));
return true;
}
@ -730,7 +730,7 @@ bool wait_for_alt_mode(struct dc_link *link)
time_taken_in_ns = dm_get_elapse_time_in_ns(link->ctx, finish_timestamp,
enter_timestamp);
DC_LOG_WARNING("Alt mode has timed out after %llu ms\n",
time_taken_in_ns / 1000000);
div_u64(time_taken_in_ns, 1000000));
return false;
}