The msm_kms_funcs::check_modified_format() callback is not used by the
driver. Drop it completely.

Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c | 45 -----------------------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_formats.h | 15 ----------
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c     |  1 -
 drivers/gpu/drm/msm/msm_kms.h               |  5 ----
 4 files changed, 66 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c
index e366ab134249..ff0df478c958 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c
@@ -960,51 +960,6 @@ int dpu_format_populate_layout(
        return ret;
 }
 
-int dpu_format_check_modified_format(
-               const struct msm_kms *kms,
-               const struct msm_format *msm_fmt,
-               const struct drm_mode_fb_cmd2 *cmd,
-               struct drm_gem_object **bos)
-{
-       const struct drm_format_info *info;
-       const struct dpu_format *fmt;
-       struct dpu_hw_fmt_layout layout;
-       uint32_t bos_total_size = 0;
-       int ret, i;
-
-       if (!msm_fmt || !cmd || !bos) {
-               DRM_ERROR("invalid arguments\n");
-               return -EINVAL;
-       }
-
-       fmt = to_dpu_format(msm_fmt);
-       info = drm_format_info(fmt->base.pixel_format);
-       if (!info)
-               return -EINVAL;
-
-       ret = dpu_format_get_plane_sizes(fmt, cmd->width, cmd->height,
-                       &layout, cmd->pitches);
-       if (ret)
-               return ret;
-
-       for (i = 0; i < info->num_planes; i++) {
-               if (!bos[i]) {
-                       DRM_ERROR("invalid handle for plane %d\n", i);
-                       return -EINVAL;
-               }
-               if ((i == 0) || (bos[i] != bos[0]))
-                       bos_total_size += bos[i]->size;
-       }
-
-       if (bos_total_size < layout.total_size) {
-               DRM_ERROR("buffers total size too small %u expected %u\n",
-                               bos_total_size, layout.total_size);
-               return -EINVAL;
-       }
-
-       return 0;
-}
-
 const struct dpu_format *dpu_get_dpu_format_ext(
                const uint32_t format,
                const uint64_t modifier)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.h 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.h
index 84b8b3289f18..9442445f1a86 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.h
@@ -54,21 +54,6 @@ const struct msm_format *dpu_get_msm_format(
                const uint32_t format,
                const uint64_t modifiers);
 
-/**
- * dpu_format_check_modified_format - validate format and buffers for
- *                   dpu non-standard, i.e. modified format
- * @kms:             kms driver
- * @msm_fmt:         pointer to the msm_fmt base pointer of an dpu_format
- * @cmd:             fb_cmd2 structure user request
- * @bos:             gem buffer object list
- *
- * Return: error code on failure, 0 on success
- */
-int dpu_format_check_modified_format(
-               const struct msm_kms *kms,
-               const struct msm_format *msm_fmt,
-               const struct drm_mode_fb_cmd2 *cmd,
-               struct drm_gem_object **bos);
 
 /**
  * dpu_format_populate_layout - populate the given format layout based on
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index a1f5d7c4ab91..7257ac4020d8 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -969,7 +969,6 @@ static const struct msm_kms_funcs kms_funcs = {
        .complete_commit = dpu_kms_complete_commit,
        .enable_vblank   = dpu_kms_enable_vblank,
        .disable_vblank  = dpu_kms_disable_vblank,
-       .check_modified_format = dpu_format_check_modified_format,
        .get_format      = dpu_get_msm_format,
        .destroy         = dpu_kms_destroy,
        .snapshot        = dpu_kms_mdp_snapshot,
diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h
index 0641f6111b93..b794ed918b56 100644
--- a/drivers/gpu/drm/msm/msm_kms.h
+++ b/drivers/gpu/drm/msm/msm_kms.h
@@ -96,11 +96,6 @@ struct msm_kms_funcs {
        const struct msm_format *(*get_format)(struct msm_kms *kms,
                                        const uint32_t format,
                                        const uint64_t modifiers);
-       /* do format checking on format modified through fb_cmd2 modifiers */
-       int (*check_modified_format)(const struct msm_kms *kms,
-                       const struct msm_format *msm_fmt,
-                       const struct drm_mode_fb_cmd2 *cmd,
-                       struct drm_gem_object **bos);
 
        /* misc: */
        long (*round_pixclk)(struct msm_kms *kms, unsigned long rate,

-- 
2.39.2

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