This is for further proper invalid drm_format handling before committing
the plane state change.

The return value is not yet checked yet, and will be checked in
atomic_check in the future.

Signed-off-by: Icenowy Zheng <[email protected]>
---
 drivers/gpu/drm/verisilicon/vs_plane.c | 7 +++++--
 drivers/gpu/drm/verisilicon/vs_plane.h | 2 +-
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/verisilicon/vs_plane.c 
b/drivers/gpu/drm/verisilicon/vs_plane.c
index 2f3953e588a34..df406f565143a 100644
--- a/drivers/gpu/drm/verisilicon/vs_plane.c
+++ b/drivers/gpu/drm/verisilicon/vs_plane.c
@@ -6,13 +6,14 @@
 #include <linux/errno.h>
 #include <linux/printk.h>
 
+#include <drm/drm_atomic_state_helper.h>
 #include <drm/drm_fb_dma_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_gem_dma_helper.h>
 
 #include "vs_plane.h"
 
-void drm_format_to_vs_format(u32 drm_format, struct vs_format *vs_format)
+int drm_format_to_vs_format(u32 drm_format, struct vs_format *vs_format)
 {
        switch (drm_format) {
        case DRM_FORMAT_XRGB4444:
@@ -62,7 +63,7 @@ void drm_format_to_vs_format(u32 drm_format, struct vs_format 
*vs_format)
                vs_format->color = VSDC_COLOR_FORMAT_A2R10G10B10;
                break;
        default:
-               pr_warn("Unexpected drm format!\n");
+               return -EINVAL;
        }
 
        switch (drm_format) {
@@ -101,6 +102,8 @@ void drm_format_to_vs_format(u32 drm_format, struct 
vs_format *vs_format)
 
        /* N/A for non-YUV formats */
        vs_format->uv_swizzle = false;
+
+       return 0;
 }
 
 dma_addr_t vs_fb_get_dma_addr(struct drm_framebuffer *fb,
diff --git a/drivers/gpu/drm/verisilicon/vs_plane.h 
b/drivers/gpu/drm/verisilicon/vs_plane.h
index 41875ea3d66a5..a88cc19f2202e 100644
--- a/drivers/gpu/drm/verisilicon/vs_plane.h
+++ b/drivers/gpu/drm/verisilicon/vs_plane.h
@@ -63,7 +63,7 @@ struct vs_format {
        bool uv_swizzle;
 };
 
-void drm_format_to_vs_format(u32 drm_format, struct vs_format *vs_format);
+int drm_format_to_vs_format(u32 drm_format, struct vs_format *vs_format);
 dma_addr_t vs_fb_get_dma_addr(struct drm_framebuffer *fb,
                              const struct drm_rect *src_rect);
 
-- 
2.52.0

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