From 2890662822def3dcc1b2e690d6fcea694c666083 Mon Sep 17 00:00:00 2001
From: "GONG, Ruiqi" <gongruiqi@huaweicloud.com>
Date: Fri, 2 Jun 2023 18:12:33 +0800
Subject: drm/amd/display: fix compilation error due to shifting negative value
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Currently compiling linux-next with allmodconfig triggers the following
error:
./drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h: In function ‘dc_fixpt_truncate’:
./drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:528:22: error: left shift of negative value [-Werror=shift-negative-value]
528 | arg.value &= (~0LL) << (FIXED31_32_BITS_PER_FRACTIONAL_PART - frac_bits);
| ^~
Use `unsigned long long` instead.
Signed-off-by: GONG, Ruiqi <gongruiqi@huaweicloud.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/include/fixed31_32.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
(limited to 'drivers/gpu/drm/amd/display/include/fixed31_32.h')
diff --git a/drivers/gpu/drm/amd/display/include/fixed31_32.h b/drivers/gpu/drm/amd/display/include/fixed31_32.h
index ece97ae0e826..d4cf7ead1d87 100644
--- a/drivers/gpu/drm/amd/display/include/fixed31_32.h
+++ b/drivers/gpu/drm/amd/display/include/fixed31_32.h
@@ -525,7 +525,7 @@ static inline struct fixed31_32 dc_fixpt_truncate(struct fixed31_32 arg, unsigne
if (negative)
arg.value = -arg.value;
- arg.value &= (~0LL) << (FIXED31_32_BITS_PER_FRACTIONAL_PART - frac_bits);
+ arg.value &= (~0ULL) << (FIXED31_32_BITS_PER_FRACTIONAL_PART - frac_bits);
if (negative)
arg.value = -arg.value;
return arg;
--
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