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| author | Neil Armstrong <narmstrong@baylibre.com> | 2020-07-07 15:50:09 +0200 |
|---|---|---|
| committer | Neil Armstrong <narmstrong@baylibre.com> | 2020-07-07 15:53:44 +0200 |
| commit | 08fbd8a5fb24e504ffd278208576afdeefc93a2d (patch) | |
| tree | 73cd1387066f791626519541b13f49b28434b832 | |
| parent | drm/ast: Initialize mode setting in ast_mode_config_init() (diff) | |
| download | linux-08fbd8a5fb24e504ffd278208576afdeefc93a2d.tar.xz linux-08fbd8a5fb24e504ffd278208576afdeefc93a2d.zip | |
drm/meson: overlay: fix build failure
The recent GCC compiler is very picky with the VD_H_START() and
AFBC_DEC_PIXEL_BGN_H() macros, triggering a runtime assert error as:
In function 'meson_overlay_setup_scaler_params',
inlined from 'meson_overlay_atomic_update' at
drivers/gpu/drm/meson/meson_overlay.c:542:2:
./include/linux/compiler.h:392:38: error: call to
'__compiletime_assert_341' declared with attribute error: FIELD_PREP:
value too large for the field
drivers/gpu/drm/meson/meson_overlay.c:413:4: note: in expansion of macro
'AFBC_DEC_PIXEL_BGN_H'
413 | AFBC_DEC_PIXEL_BGN_H(hd_start_lines - afbc_left) |
| ^~~~~~~~~~~~~~~~~~~~
./include/linux/compiler.h:392:38: error: call to
'__compiletime_assert_401' declared with attribute error: FIELD_PREP:
value too large for the field
It's not expected to overflow these fields, but the compiler did
find a case where it overflows.
We can safely ignore this, so mask the value with the field width.
Fixes: e860785d57306 ("drm/meson: overlay: setup overlay for Amlogic FBC")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[narmstrong: moved to (value) to avoid precedence issues]
Link: https://patchwork.freedesktop.org/patch/msgid/20200707135009.32474-1-narmstrong@baylibre.com
| -rw-r--r-- | drivers/gpu/drm/meson/meson_overlay.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/meson/meson_overlay.c b/drivers/gpu/drm/meson/meson_overlay.c index 1f7b2055e012..a8bcc70644df 100644 --- a/drivers/gpu/drm/meson/meson_overlay.c +++ b/drivers/gpu/drm/meson/meson_overlay.c @@ -58,7 +58,8 @@ /* VPP_POSTBLEND_VD1_H_START_END */ #define VD_H_END(value) FIELD_PREP(GENMASK(11, 0), value) -#define VD_H_START(value) FIELD_PREP(GENMASK(27, 16), value) +#define VD_H_START(value) FIELD_PREP(GENMASK(27, 16), \ + ((value) & GENMASK(13, 0))) /* VPP_POSTBLEND_VD1_V_START_END */ #define VD_V_END(value) FIELD_PREP(GENMASK(11, 0), value) @@ -144,7 +145,8 @@ #define AFBC_MIF_BLK_END_V(value) FIELD_PREP(GENMASK(11, 0), value) /* AFBC_PIXEL_HOR_SCOPE */ -#define AFBC_DEC_PIXEL_BGN_H(value) FIELD_PREP(GENMASK(28, 16), value) +#define AFBC_DEC_PIXEL_BGN_H(value) FIELD_PREP(GENMASK(28, 16), \ + ((value) & GENMASK(12, 0))) #define AFBC_DEC_PIXEL_END_H(value) FIELD_PREP(GENMASK(12, 0), value) /* AFBC_PIXEL_VER_SCOPE */ |