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drm/exynos: fix accidental on-stack copy of exynos_drm_plane 

[ Upstream commit 960b537e91725bcb17dd1b19e48950e62d134078 ]

gcc rightfully complains about excessive stack usage in the fimd_win_set_pixfmt()
function:

drivers/gpu/drm/exynos/exynos_drm_fimd.c: In function 'fimd_win_set_pixfmt':
drivers/gpu/drm/exynos/exynos_drm_fimd.c:750:1: error: the frame size of 1032 bytes is larger than 1024 byte
drivers/gpu/drm/exynos/exynos5433_drm_decon.c: In function 'decon_win_set_pixfmt':
drivers/gpu/drm/exynos/exynos5433_drm_decon.c:381:1: error: the frame size of 1032 bytes is larger than 1024 bytes

There is really no reason to copy the large exynos_drm_plane
structure to the stack before using one of its members, so just
use a pointer instead.

Fixes: 6f8ee5c217 ("drm/exynos: fimd: Make plane alpha configurable")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Arnd Bergmann 2023-12-14 13:32:15 +01:00 committed by Greg Kroah-Hartman
parent e791a345fa
commit 38a31370ba
2 changed files with 4 additions and 4 deletions
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4
drivers/gpu/drm/exynos/exynos5433_drm_decon.c
View File

@ -319,9 +319,9 @@ static void decon_win_set_bldmod(struct decon_context *ctx, unsigned int win,
static void decon_win_set_pixfmt(struct decon_context *ctx, unsigned int win,
struct drm_framebuffer *fb)
{
struct exynos_drm_plane plane = ctx->planes[win];
struct exynos_drm_plane *plane = &ctx->planes[win];
struct exynos_drm_plane_state *state =
to_exynos_plane_state(plane.base.state);
to_exynos_plane_state(plane->base.state);
unsigned int alpha = state->base.alpha;
unsigned int pixel_alpha;
unsigned long val;

4
drivers/gpu/drm/exynos/exynos_drm_fimd.c
View File

@ -661,9 +661,9 @@ static void fimd_win_set_bldmod(struct fimd_context *ctx, unsigned int win,
static void fimd_win_set_pixfmt(struct fimd_context *ctx, unsigned int win,
struct drm_framebuffer *fb, int width)
{
struct exynos_drm_plane plane = ctx->planes[win];
struct exynos_drm_plane *plane = &ctx->planes[win];
struct exynos_drm_plane_state *state =
to_exynos_plane_state(plane.base.state);
to_exynos_plane_state(plane->base.state);
uint32_t pixel_format = fb->format->format;
unsigned int alpha = state->base.alpha;
u32 val = WINCONx_ENWIN;