lkml.org 
[lkml]   [2021]   [Apr]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] drm/tegra: Fix shift overflow in tegra_shared_plane_atomic_update
Date
Clang warns:

drivers/gpu/drm/tegra/hub.c:513:11: warning: shift count >= width of
type [-Wshift-count-overflow]
base |= BIT(39);
^~~~~~~

BIT is unsigned long, which is 32-bit on ARCH=arm, hence the overflow
warning. Switch to BIT_ULL, which is 64-bit and will not overflow.

Fixes: 7b6f846785f4 ("drm/tegra: Support sector layout on Tegra194")
Link: https://github.com/ClangBuiltLinux/linux/issues/1351
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
drivers/gpu/drm/tegra/hub.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c
index 79bff8b48271..bfae8a02f55b 100644
--- a/drivers/gpu/drm/tegra/hub.c
+++ b/drivers/gpu/drm/tegra/hub.c
@@ -510,7 +510,7 @@ static void tegra_shared_plane_atomic_update(struct drm_plane *plane,
* dGPU sector layout.
*/
if (tegra_plane_state->tiling.sector_layout == TEGRA_BO_SECTOR_LAYOUT_GPU)
- base |= BIT(39);
+ base |= BIT_ULL(39);
#endif

tegra_plane_writel(p, tegra_plane_state->format, DC_WIN_COLOR_DEPTH);
base-commit: 0265531f0897f890da3f9c2958707af099c7d974
--
2.31.1.272.g89b43f80a5

\
 
 \ /
  Last update: 2021-04-15 17:31    [W:0.033 / U:0.284 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site