[PATCH v2] drm/panel: samsung-s6d7aa0: use pointer for drm_mode in panel desc struct

From: Artur Weber
Date: Wed May 24 2023 - 04:43:57 EST


Fixes compilation issues with older GCC versions and Clang after
changes introduced in commit 6810bb390282 ("drm/panel: Add Samsung
S6D7AA0 panel controller driver"). Tested with GCC 13.1.1, GCC 6.4.0
and Clang 16.0.3.

Fixes the following errors with Clang:

drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:312:14: error: initializer element is not a compile-time constant
.drm_mode = s6d7aa0_lsl080al02_mode,
^~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:415:14: error: initializer element is not a compile-time constant
.drm_mode = s6d7aa0_lsl080al03_mode,
^~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:443:14: error: initializer element is not a compile-time constant
.drm_mode = s6d7aa0_ltl101at01_mode,
^~~~~~~~~~~~~~~~~~~~~~~
3 errors generated.

Fixes the following errors with GCC:

drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:312:14: error: initializer element is not constant
.drm_mode = s6d7aa0_lsl080al02_mode,
^~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:312:14: note: (near initialization for 's6d7aa0_lsl080al02_desc.drm_mode')
drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:415:14: error: initializer element is not constant
.drm_mode = s6d7aa0_lsl080al03_mode,
^~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:415:14: note: (near initialization for 's6d7aa0_lsl080al03_desc.drm_mode')
drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:443:14: error: initializer element is not constant
.drm_mode = s6d7aa0_ltl101at01_mode,
^~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c:443:14: note: (near initialization for 's6d7aa0_ltl101at01_desc.drm_mode')

Reported-by: Nathan Chancellor <nathan@xxxxxxxxxx>
Link: https://lore.kernel.org/lkml/20230523180212.GA1401867@dev-arch.thelio-3990X
Reported-by: kernelci.org bot <bot@xxxxxxxxxxxx>
Link: https://lore.kernel.org/llvm/646c6def.a70a0220.58c1a.903d@xxxxxxxxxxxxx
Fixes: 6810bb390282 ("drm/panel: Add Samsung S6D7AA0 panel controller driver")
Signed-off-by: Artur Weber <aweber.kernel@xxxxxxxxx>
---
v2: expanded commit message
---
drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
index f532aa018428..102e1fc7ee38 100644
--- a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
+++ b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
@@ -37,7 +37,7 @@ struct s6d7aa0_panel_desc {
unsigned int panel_type;
int (*init_func)(struct s6d7aa0 *ctx);
int (*off_func)(struct s6d7aa0 *ctx);
- const struct drm_display_mode drm_mode;
+ const struct drm_display_mode *drm_mode;
unsigned long mode_flags;
u32 bus_flags;
bool has_backlight;
@@ -309,7 +309,7 @@ static const struct s6d7aa0_panel_desc s6d7aa0_lsl080al02_desc = {
.panel_type = S6D7AA0_PANEL_LSL080AL02,
.init_func = s6d7aa0_lsl080al02_init,
.off_func = s6d7aa0_lsl080al02_off,
- .drm_mode = s6d7aa0_lsl080al02_mode,
+ .drm_mode = &s6d7aa0_lsl080al02_mode,
.mode_flags = MIPI_DSI_MODE_VSYNC_FLUSH | MIPI_DSI_MODE_VIDEO_NO_HFP,
.bus_flags = DRM_BUS_FLAG_DE_HIGH,

@@ -412,7 +412,7 @@ static const struct s6d7aa0_panel_desc s6d7aa0_lsl080al03_desc = {
.panel_type = S6D7AA0_PANEL_LSL080AL03,
.init_func = s6d7aa0_lsl080al03_init,
.off_func = s6d7aa0_lsl080al03_off,
- .drm_mode = s6d7aa0_lsl080al03_mode,
+ .drm_mode = &s6d7aa0_lsl080al03_mode,
.mode_flags = MIPI_DSI_MODE_NO_EOT_PACKET,
.bus_flags = 0,

@@ -440,7 +440,7 @@ static const struct s6d7aa0_panel_desc s6d7aa0_ltl101at01_desc = {
.panel_type = S6D7AA0_PANEL_LTL101AT01,
.init_func = s6d7aa0_lsl080al03_init, /* Similar init to LSL080AL03 */
.off_func = s6d7aa0_lsl080al03_off,
- .drm_mode = s6d7aa0_ltl101at01_mode,
+ .drm_mode = &s6d7aa0_ltl101at01_mode,
.mode_flags = MIPI_DSI_MODE_NO_EOT_PACKET,
.bus_flags = 0,

@@ -458,7 +458,7 @@ static int s6d7aa0_get_modes(struct drm_panel *panel,
if (!ctx)
return -EINVAL;

- mode = drm_mode_duplicate(connector->dev, &ctx->desc->drm_mode);
+ mode = drm_mode_duplicate(connector->dev, ctx->desc->drm_mode);
if (!mode)
return -ENOMEM;


base-commit: 37cee4876a45a5c3da79a83d34ed4f3c68548aef
--
2.40.1