From 6226268e5f0977abcd0b6c46087bb7d52672f2c3 Mon Sep 17 00:00:00 2001
From: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Date: Thu, 30 Jun 2022 14:46:18 -0400
Subject: drm/amd/display: Fix __umoddi3 undefined for 32 bit compilation
Git-commit: 0d8928a94ba18205cc7b41793af333e6731e9d76
Patch-mainline: v6.0-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225 jsc#PED-2849
While we tried to build amdgpu on i386, we got this error:
ERROR: modpost: "__umoddi3" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
This commit fixes this issue by replacing the standard module operator
with div_u64_rem.
Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Fixes: d3dfceb58de5 ("drm/amd/display: Add dependant changes for DCN32/321")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
index a10ec5919194..790aa2b3952c 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
@@ -208,12 +208,14 @@ static uint32_t dcn32_cache_lines_for_surface(struct dc *dc, uint32_t surface_si
uint32_t num_cached_bytes = 0;
uint32_t remaining_size = 0;
uint32_t cache_line_size = dc->caps.cache_line_size;
+ uint32_t remainder = 0;
/* 1. Calculate surface size minus the number of bytes stored
* in the first cache line (all bytes in first cache line might
* not be fully used).
*/
- num_cached_bytes = cache_line_size - (start_address % cache_line_size);
+ div_u64_rem(start_address, cache_line_size, &remainder);
+ num_cached_bytes = cache_line_size - remainder;
remaining_size = surface_size - num_cached_bytes;
/* 2. Calculate number of cache lines that will be fully used with
--
2.38.1