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From c5d1ed3079e37b5f11fb7e6d70cfb0084699374f Mon Sep 17 00:00:00 2001
From: David Francis <David.Francis@amd.com>
Date: Tue, 22 May 2018 16:01:08 -0400
Subject: [PATCH 4516/5725] drm/amd/display: Remove use of division operator
for long longs
In fixed31_32.h, in dc_fixpt_shl,'/' was used for division of one long
long int by another long long int. As there is no inbuilt long long
int division function in c, gcc inserted its own. However, gcc does not
link the library that contains this function. To avoid this, use
bitwise operators instead of /
Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/include/fixed31_32.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/include/fixed31_32.h b/drivers/gpu/drm/amd/display/include/fixed31_32.h
index 76f64e9..bb0d4eb 100644
--- a/drivers/gpu/drm/amd/display/include/fixed31_32.h
+++ b/drivers/gpu/drm/amd/display/include/fixed31_32.h
@@ -209,7 +209,7 @@ static inline struct fixed31_32 dc_fixpt_clamp(
static inline struct fixed31_32 dc_fixpt_shl(struct fixed31_32 arg, unsigned char shift)
{
ASSERT(((arg.value >= 0) && (arg.value <= LLONG_MAX >> shift)) ||
- ((arg.value < 0) && (arg.value >= (LLONG_MIN / (1LL << shift)))));
+ ((arg.value < 0) && (arg.value >= ~(LLONG_MAX >> shift))));
arg.value = arg.value << shift;
--
2.7.4
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