drm/vc4: Demote user-accessible DRM_ERROR paths to DRM_DEBUG.

Userspace shouldn't be able to spam dmesg by passing bad arguments.
This has particularly become an issues since we started using a bad
argument to set_tiling to detect if set_tiling was supported.

Signed-off-by: Eric Anholt <eric@anholt.net>
Fixes: 83753117f1de ("drm/vc4: Add get/set tiling ioctls.")
Link: https://patchwork.freedesktop.org/patch/msgid/20170725162733.28007-1-eric@anholt.net
Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>

6 files changed, 108 insertions, 108 deletions

diff --git a/drivers/gpu/drm/vc4/vc4_bo.c b/drivers/gpu/drm/vc4/vc4_bo.c
index 48c10a5ad6a2..facee39747da 100644
--- a/drivers/gpu/drm/vc4/vc4_bo.c
+++ b/drivers/gpu/drm/vc4/vc4_bo.c
@@ -482,7 +482,7 @@ vc4_prime_export(struct drm_device *dev, struct drm_gem_object *obj, int flags)
 	struct vc4_bo *bo = to_vc4_bo(obj);
 
 	if (bo->validated_shader) {
-		DRM_ERROR("Attempting to export shader BO\n");
+		DRM_DEBUG("Attempting to export shader BO\n");
 		return ERR_PTR(-EINVAL);
 	}
 
@@ -503,7 +503,7 @@ int vc4_mmap(struct file *filp, struct vm_area_struct *vma)
 	bo = to_vc4_bo(gem_obj);
 
 	if (bo->validated_shader && (vma->vm_flags & VM_WRITE)) {
-		DRM_ERROR("mmaping of shader BOs for writing not allowed.\n");
+		DRM_DEBUG("mmaping of shader BOs for writing not allowed.\n");
 		return -EINVAL;
 	}
 
@@ -528,7 +528,7 @@ int vc4_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
 	struct vc4_bo *bo = to_vc4_bo(obj);
 
 	if (bo->validated_shader && (vma->vm_flags & VM_WRITE)) {
-		DRM_ERROR("mmaping of shader BOs for writing not allowed.\n");
+		DRM_DEBUG("mmaping of shader BOs for writing not allowed.\n");
 		return -EINVAL;
 	}
 
@@ -540,7 +540,7 @@ void *vc4_prime_vmap(struct drm_gem_object *obj)
 	struct vc4_bo *bo = to_vc4_bo(obj);
 
 	if (bo->validated_shader) {
-		DRM_ERROR("mmaping of shader BOs not allowed.\n");
+		DRM_DEBUG("mmaping of shader BOs not allowed.\n");
 		return ERR_PTR(-EINVAL);
 	}
 
@@ -594,7 +594,7 @@ int vc4_mmap_bo_ioctl(struct drm_device *dev, void *data,
 
 	gem_obj = drm_gem_object_lookup(file_priv, args->handle);
 	if (!gem_obj) {
-		DRM_ERROR("Failed to look up GEM BO %d\n", args->handle);
+		DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
 		return -EINVAL;
 	}
 
@@ -698,7 +698,7 @@ int vc4_set_tiling_ioctl(struct drm_device *dev, void *data,
 
 	gem_obj = drm_gem_object_lookup(file_priv, args->handle);
 	if (!gem_obj) {
-		DRM_ERROR("Failed to look up GEM BO %d\n", args->handle);
+		DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
 		return -ENOENT;
 	}
 	bo = to_vc4_bo(gem_obj);
@@ -729,7 +729,7 @@ int vc4_get_tiling_ioctl(struct drm_device *dev, void *data,
 
 	gem_obj = drm_gem_object_lookup(file_priv, args->handle);
 	if (!gem_obj) {
-		DRM_ERROR("Failed to look up GEM BO %d\n", args->handle);
+		DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
 		return -ENOENT;
 	}
 	bo = to_vc4_bo(gem_obj);
diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c
index ae8ce6d884a1..22a55cff7e64 100644
--- a/drivers/gpu/drm/vc4/vc4_gem.c
+++ b/drivers/gpu/drm/vc4/vc4_gem.c
@@ -659,7 +659,7 @@ vc4_cl_lookup_bos(struct drm_device *dev,
 		/* See comment on bo_index for why we have to check
 		 * this.
 		 */
-		DRM_ERROR("Rendering requires BOs to validate\n");
+		DRM_DEBUG("Rendering requires BOs to validate\n");
 		return -EINVAL;
 	}
 
@@ -690,7 +690,7 @@ vc4_cl_lookup_bos(struct drm_device *dev,
 		struct drm_gem_object *bo = idr_find(&file_priv->object_idr,
 						     handles[i]);
 		if (!bo) {
-			DRM_ERROR("Failed to look up GEM BO %d: %d\n",
+			DRM_DEBUG("Failed to look up GEM BO %d: %d\n",
 				  i, handles[i]);
 			ret = -EINVAL;
 			spin_unlock(&file_priv->table_lock);
@@ -728,7 +728,7 @@ vc4_get_bcl(struct drm_device *dev, struct vc4_exec_info *exec)
 	    args->shader_rec_count >= (UINT_MAX /
 					  sizeof(struct vc4_shader_state)) ||
 	    temp_size < exec_size) {
-		DRM_ERROR("overflow in exec arguments\n");
+		DRM_DEBUG("overflow in exec arguments\n");
 		ret = -EINVAL;
 		goto fail;
 	}
@@ -973,7 +973,7 @@ vc4_wait_bo_ioctl(struct drm_device *dev, void *data,
 
 	gem_obj = drm_gem_object_lookup(file_priv, args->handle);
 	if (!gem_obj) {
-		DRM_ERROR("Failed to look up GEM BO %d\n", args->handle);
+		DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
 		return -EINVAL;
 	}
 	bo = to_vc4_bo(gem_obj);
@@ -1008,7 +1008,7 @@ vc4_submit_cl_ioctl(struct drm_device *dev, void *data,
 	int ret = 0;
 
 	if ((args->flags & ~VC4_SUBMIT_CL_USE_CLEAR_COLOR) != 0) {
-		DRM_ERROR("Unknown flags: 0x%02x\n", args->flags);
+		DRM_DEBUG("Unknown flags: 0x%02x\n", args->flags);
 		return -EINVAL;
 	}
 
diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
index 8b31f177d462..dfe7554268f0 100644
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -169,7 +169,7 @@ static struct drm_framebuffer *vc4_fb_create(struct drm_device *dev,
 		gem_obj = drm_gem_object_lookup(file_priv,
 						mode_cmd->handles[0]);
 		if (!gem_obj) {
-			DRM_ERROR("Failed to look up GEM BO %d\n",
+			DRM_DEBUG("Failed to look up GEM BO %d\n",
 				  mode_cmd->handles[0]);
 			return ERR_PTR(-ENOENT);
 		}
diff --git a/drivers/gpu/drm/vc4/vc4_render_cl.c b/drivers/gpu/drm/vc4/vc4_render_cl.c
index 4a8051532f00..e0539731130b 100644
--- a/drivers/gpu/drm/vc4/vc4_render_cl.c
+++ b/drivers/gpu/drm/vc4/vc4_render_cl.c
@@ -378,14 +378,14 @@ static int vc4_full_res_bounds_check(struct vc4_exec_info *exec,
 	u32 render_tiles_stride = DIV_ROUND_UP(exec->args->width, 32);
 
 	if (surf->offset > obj->base.size) {
-		DRM_ERROR("surface offset %d > BO size %zd\n",
+		DRM_DEBUG("surface offset %d > BO size %zd\n",
 			  surf->offset, obj->base.size);
 		return -EINVAL;
 	}
 
 	if ((obj->base.size - surf->offset) / VC4_TILE_BUFFER_SIZE <
 	    render_tiles_stride * args->max_y_tile + args->max_x_tile) {
-		DRM_ERROR("MSAA tile %d, %d out of bounds "
+		DRM_DEBUG("MSAA tile %d, %d out of bounds "
 			  "(bo size %zd, offset %d).\n",
 			  args->max_x_tile, args->max_y_tile,
 			  obj->base.size,
@@ -401,7 +401,7 @@ static int vc4_rcl_msaa_surface_setup(struct vc4_exec_info *exec,
 				      struct drm_vc4_submit_rcl_surface *surf)
 {
 	if (surf->flags != 0 || surf->bits != 0) {
-		DRM_ERROR("MSAA surface had nonzero flags/bits\n");
+		DRM_DEBUG("MSAA surface had nonzero flags/bits\n");
 		return -EINVAL;
 	}
 
@@ -415,7 +415,7 @@ static int vc4_rcl_msaa_surface_setup(struct vc4_exec_info *exec,
 	exec->rcl_write_bo[exec->rcl_write_bo_count++] = *obj;
 
 	if (surf->offset & 0xf) {
-		DRM_ERROR("MSAA write must be 16b aligned.\n");
+		DRM_DEBUG("MSAA write must be 16b aligned.\n");
 		return -EINVAL;
 	}
 
@@ -437,7 +437,7 @@ static int vc4_rcl_surface_setup(struct vc4_exec_info *exec,
 	int ret;
 
 	if (surf->flags & ~VC4_SUBMIT_RCL_SURFACE_READ_IS_FULL_RES) {
-		DRM_ERROR("Extra flags set\n");
+		DRM_DEBUG("Extra flags set\n");
 		return -EINVAL;
 	}
 
@@ -453,12 +453,12 @@ static int vc4_rcl_surface_setup(struct vc4_exec_info *exec,
 
 	if (surf->flags & VC4_SUBMIT_RCL_SURFACE_READ_IS_FULL_RES) {
 		if (surf == &exec->args->zs_write) {
-			DRM_ERROR("general zs write may not be a full-res.\n");
+			DRM_DEBUG("general zs write may not be a full-res.\n");
 			return -EINVAL;
 		}
 
 		if (surf->bits != 0) {
-			DRM_ERROR("load/store general bits set with "
+			DRM_DEBUG("load/store general bits set with "
 				  "full res load/store.\n");
 			return -EINVAL;
 		}
@@ -473,19 +473,19 @@ static int vc4_rcl_surface_setup(struct vc4_exec_info *exec,
 	if (surf->bits & ~(VC4_LOADSTORE_TILE_BUFFER_TILING_MASK |
 			   VC4_LOADSTORE_TILE_BUFFER_BUFFER_MASK |
 			   VC4_LOADSTORE_TILE_BUFFER_FORMAT_MASK)) {
-		DRM_ERROR("Unknown bits in load/store: 0x%04x\n",
+		DRM_DEBUG("Unknown bits in load/store: 0x%04x\n",
 			  surf->bits);
 		return -EINVAL;
 	}
 
 	if (tiling > VC4_TILING_FORMAT_LT) {
-		DRM_ERROR("Bad tiling format\n");
+		DRM_DEBUG("Bad tiling format\n");
 		return -EINVAL;
 	}
 
 	if (buffer == VC4_LOADSTORE_TILE_BUFFER_ZS) {
 		if (format != 0) {
-			DRM_ERROR("No color format should be set for ZS\n");
+			DRM_DEBUG("No color format should be set for ZS\n");
 			return -EINVAL;
 		}
 		cpp = 4;
@@ -499,16 +499,16 @@ static int vc4_rcl_surface_setup(struct vc4_exec_info *exec,
 			cpp = 4;
 			break;
 		default:
-			DRM_ERROR("Bad tile buffer format\n");
+			DRM_DEBUG("Bad tile buffer format\n");
 			return -EINVAL;
 		}
 	} else {
-		DRM_ERROR("Bad load/store buffer %d.\n", buffer);
+		DRM_DEBUG("Bad load/store buffer %d.\n", buffer);
 		return -EINVAL;
 	}
 
 	if (surf->offset & 0xf) {
-		DRM_ERROR("load/store buffer must be 16b aligned.\n");
+		DRM_DEBUG("load/store buffer must be 16b aligned.\n");
 		return -EINVAL;
 	}
 
@@ -533,7 +533,7 @@ vc4_rcl_render_config_surface_setup(struct vc4_exec_info *exec,
 	int cpp;
 
 	if (surf->flags != 0) {
-		DRM_ERROR("No flags supported on render config.\n");
+		DRM_DEBUG("No flags supported on render config.\n");
 		return -EINVAL;
 	}
 
@@ -541,7 +541,7 @@ vc4_rcl_render_config_surface_setup(struct vc4_exec_info *exec,
 			   VC4_RENDER_CONFIG_FORMAT_MASK |
 			   VC4_RENDER_CONFIG_MS_MODE_4X |
 			   VC4_RENDER_CONFIG_DECIMATE_MODE_4X)) {
-		DRM_ERROR("Unknown bits in render config: 0x%04x\n",
+		DRM_DEBUG("Unknown bits in render config: 0x%04x\n",
 			  surf->bits);
 		return -EINVAL;
 	}
@@ -556,7 +556,7 @@ vc4_rcl_render_config_surface_setup(struct vc4_exec_info *exec,
 	exec->rcl_write_bo[exec->rcl_write_bo_count++] = *obj;
 
 	if (tiling > VC4_TILING_FORMAT_LT) {
-		DRM_ERROR("Bad tiling format\n");
+		DRM_DEBUG("Bad tiling format\n");
 		return -EINVAL;
 	}
 
@@ -569,7 +569,7 @@ vc4_rcl_render_config_surface_setup(struct vc4_exec_info *exec,
 		cpp = 4;
 		break;
 	default:
-		DRM_ERROR("Bad tile buffer format\n");
+		DRM_DEBUG("Bad tile buffer format\n");
 		return -EINVAL;
 	}
 
@@ -590,7 +590,7 @@ int vc4_get_rcl(struct drm_device *dev, struct vc4_exec_info *exec)
 
 	if (args->min_x_tile > args->max_x_tile ||
 	    args->min_y_tile > args->max_y_tile) {
-		DRM_ERROR("Bad render tile set (%d,%d)-(%d,%d)\n",
+		DRM_DEBUG("Bad render tile set (%d,%d)-(%d,%d)\n",
 			  args->min_x_tile, args->min_y_tile,
 			  args->max_x_tile, args->max_y_tile);
 		return -EINVAL;
@@ -599,7 +599,7 @@ int vc4_get_rcl(struct drm_device *dev, struct vc4_exec_info *exec)
 	if (has_bin &&
 	    (args->max_x_tile > exec->bin_tiles_x ||
 	     args->max_y_tile > exec->bin_tiles_y)) {
-		DRM_ERROR("Render tiles (%d,%d) outside of bin config "
+		DRM_DEBUG("Render tiles (%d,%d) outside of bin config "
 			  "(%d,%d)\n",
 			  args->max_x_tile, args->max_y_tile,
 			  exec->bin_tiles_x, exec->bin_tiles_y);
@@ -642,7 +642,7 @@ int vc4_get_rcl(struct drm_device *dev, struct vc4_exec_info *exec)
 	 */
 	if (!setup.color_write && !setup.zs_write &&
 	    !setup.msaa_color_write && !setup.msaa_zs_write) {
-		DRM_ERROR("RCL requires color or Z/S write\n");
+		DRM_DEBUG("RCL requires color or Z/S write\n");
 		return -EINVAL;
 	}
 
diff --git a/drivers/gpu/drm/vc4/vc4_validate.c b/drivers/gpu/drm/vc4/vc4_validate.c
index 814b512c6b9a..2db485abb186 100644
--- a/drivers/gpu/drm/vc4/vc4_validate.c
+++ b/drivers/gpu/drm/vc4/vc4_validate.c
@@ -109,7 +109,7 @@ vc4_use_bo(struct vc4_exec_info *exec, uint32_t hindex)
 	struct vc4_bo *bo;
 
 	if (hindex >= exec->bo_count) {
-		DRM_ERROR("BO index %d greater than BO count %d\n",
+		DRM_DEBUG("BO index %d greater than BO count %d\n",
 			  hindex, exec->bo_count);
 		return NULL;
 	}
@@ -117,7 +117,7 @@ vc4_use_bo(struct vc4_exec_info *exec, uint32_t hindex)
 	bo = to_vc4_bo(&obj->base);
 
 	if (bo->validated_shader) {
-		DRM_ERROR("Trying to use shader BO as something other than "
+		DRM_DEBUG("Trying to use shader BO as something other than "
 			  "a shader\n");
 		return NULL;
 	}
@@ -172,7 +172,7 @@ vc4_check_tex_size(struct vc4_exec_info *exec, struct drm_gem_cma_object *fbo,
 	 * our math.
 	 */
 	if (width > 4096 || height > 4096) {
-		DRM_ERROR("Surface dimensions (%d,%d) too large",
+		DRM_DEBUG("Surface dimensions (%d,%d) too large",
 			  width, height);
 		return false;
 	}
@@ -191,7 +191,7 @@ vc4_check_tex_size(struct vc4_exec_info *exec, struct drm_gem_cma_object *fbo,
 		aligned_height = round_up(height, utile_h);
 		break;
 	default:
-		DRM_ERROR("buffer tiling %d unsupported\n", tiling_format);
+		DRM_DEBUG("buffer tiling %d unsupported\n", tiling_format);
 		return false;
 	}
 
@@ -200,7 +200,7 @@ vc4_check_tex_size(struct vc4_exec_info *exec, struct drm_gem_cma_object *fbo,
 
 	if (size + offset < size ||
 	    size + offset > fbo->base.size) {
-		DRM_ERROR("Overflow in %dx%d (%dx%d) fbo size (%d + %d > %zd)\n",
+		DRM_DEBUG("Overflow in %dx%d (%dx%d) fbo size (%d + %d > %zd)\n",
 			  width, height,
 			  aligned_width, aligned_height,
 			  size, offset, fbo->base.size);
@@ -214,7 +214,7 @@ static int
 validate_flush(VALIDATE_ARGS)
 {
 	if (!validate_bin_pos(exec, untrusted, exec->args->bin_cl_size - 1)) {
-		DRM_ERROR("Bin CL must end with VC4_PACKET_FLUSH\n");
+		DRM_DEBUG("Bin CL must end with VC4_PACKET_FLUSH\n");
 		return -EINVAL;
 	}
 	exec->found_flush = true;
@@ -226,13 +226,13 @@ static int
 validate_start_tile_binning(VALIDATE_ARGS)
 {
 	if (exec->found_start_tile_binning_packet) {
-		DRM_ERROR("Duplicate VC4_PACKET_START_TILE_BINNING\n");
+		DRM_DEBUG("Duplicate VC4_PACKET_START_TILE_BINNING\n");
 		return -EINVAL;
 	}
 	exec->found_start_tile_binning_packet = true;
 
 	if (!exec->found_tile_binning_mode_config_packet) {
-		DRM_ERROR("missing VC4_PACKET_TILE_BINNING_MODE_CONFIG\n");
+		DRM_DEBUG("missing VC4_PACKET_TILE_BINNING_MODE_CONFIG\n");
 		return -EINVAL;
 	}
 
@@ -243,7 +243,7 @@ static int
 validate_increment_semaphore(VALIDATE_ARGS)
 {
 	if (!validate_bin_pos(exec, untrusted, exec->args->bin_cl_size - 2)) {
-		DRM_ERROR("Bin CL must end with "
+		DRM_DEBUG("Bin CL must end with "
 			  "VC4_PACKET_INCREMENT_SEMAPHORE\n");
 		return -EINVAL;
 	}
@@ -264,7 +264,7 @@ validate_indexed_prim_list(VALIDATE_ARGS)
 
 	/* Check overflow condition */
 	if (exec->shader_state_count == 0) {
-		DRM_ERROR("shader state must precede primitives\n");
+		DRM_DEBUG("shader state must precede primitives\n");
 		return -EINVAL;
 	}
 	shader_state = &exec->shader_state[exec->shader_state_count - 1];
@@ -281,7 +281,7 @@ validate_indexed_prim_list(VALIDATE_ARGS)
 
 	if (offset > ib->base.size ||
 	    (ib->base.size - offset) / index_size < length) {
-		DRM_ERROR("IB access overflow (%d + %d*%d > %zd)\n",
+		DRM_DEBUG("IB access overflow (%d + %d*%d > %zd)\n",
 			  offset, length, index_size, ib->base.size);
 		return -EINVAL;
 	}
@@ -301,13 +301,13 @@ validate_gl_array_primitive(VALIDATE_ARGS)
 
 	/* Check overflow condition */
 	if (exec->shader_state_count == 0) {
-		DRM_ERROR("shader state must precede primitives\n");
+		DRM_DEBUG("shader state must precede primitives\n");
 		return -EINVAL;
 	}
 	shader_state = &exec->shader_state[exec->shader_state_count - 1];
 
 	if (length + base_index < length) {
-		DRM_ERROR("primitive vertex count overflow\n");
+		DRM_DEBUG("primitive vertex count overflow\n");
 		return -EINVAL;
 	}
 	max_index = length + base_index - 1;
@@ -324,7 +324,7 @@ validate_gl_shader_state(VALIDATE_ARGS)
 	uint32_t i = exec->shader_state_count++;
 
 	if (i >= exec->shader_state_size) {
-		DRM_ERROR("More requests for shader states than declared\n");
+		DRM_DEBUG("More requests for shader states than declared\n");
 		return -EINVAL;
 	}
 
@@ -332,7 +332,7 @@ validate_gl_shader_state(VALIDATE_ARGS)
 	exec->shader_state[i].max_index = 0;
 
 	if (exec->shader_state[i].addr & ~0xf) {
-		DRM_ERROR("high bits set in GL shader rec reference\n");
+		DRM_DEBUG("high bits set in GL shader rec reference\n");
 		return -EINVAL;
 	}
 
@@ -356,7 +356,7 @@ validate_tile_binning_config(VALIDATE_ARGS)
 	int bin_slot;
 
 	if (exec->found_tile_binning_mode_config_packet) {
-		DRM_ERROR("Duplicate VC4_PACKET_TILE_BINNING_MODE_CONFIG\n");
+		DRM_DEBUG("Duplicate VC4_PACKET_TILE_BINNING_MODE_CONFIG\n");
 		return -EINVAL;
 	}
 	exec->found_tile_binning_mode_config_packet = true;
@@ -368,14 +368,14 @@ validate_tile_binning_config(VALIDATE_ARGS)
 
 	if (exec->bin_tiles_x == 0 ||
 	    exec->bin_tiles_y == 0) {
-		DRM_ERROR("Tile binning config of %dx%d too small\n",
+		DRM_DEBUG("Tile binning config of %dx%d too small\n",
 			  exec->bin_tiles_x, exec->bin_tiles_y);
 		return -EINVAL;
 	}
 
 	if (flags & (VC4_BIN_CONFIG_DB_NON_MS |
 		     VC4_BIN_CONFIG_TILE_BUFFER_64BIT)) {
-		DRM_ERROR("unsupported binning config flags 0x%02x\n", flags);
+		DRM_DEBUG("unsupported binning config flags 0x%02x\n", flags);
 		return -EINVAL;
 	}
 
@@ -493,20 +493,20 @@ vc4_validate_bin_cl(struct drm_device *dev,
 		const struct cmd_info *info;
 
 		if (cmd >= ARRAY_SIZE(cmd_info)) {
-			DRM_ERROR("0x%08x: packet %d out of bounds\n",
+			DRM_DEBUG("0x%08x: packet %d out of bounds\n",
 				  src_offset, cmd);
 			return -EINVAL;
 		}
 
 		info = &cmd_info[cmd];
 		if (!info->name) {
-			DRM_ERROR("0x%08x: packet %d invalid\n",
+			DRM_DEBUG("0x%08x: packet %d invalid\n",
 				  src_offset, cmd);
 			return -EINVAL;
 		}
 
 		if (src_offset + info->len > len) {
-			DRM_ERROR("0x%08x: packet %d (%s) length 0x%08x "
+			DRM_DEBUG("0x%08x: packet %d (%s) length 0x%08x "
 				  "exceeds bounds (0x%08x)\n",
 				  src_offset, cmd, info->name, info->len,
 				  src_offset + len);
@@ -519,7 +519,7 @@ vc4_validate_bin_cl(struct drm_device *dev,
 		if (info->func && info->func(exec,
 					     dst_pkt + 1,
 					     src_pkt + 1)) {
-			DRM_ERROR("0x%08x: packet %d (%s) failed to validate\n",
+			DRM_DEBUG("0x%08x: packet %d (%s) failed to validate\n",
 				  src_offset, cmd, info->name);
 			return -EINVAL;
 		}
@@ -537,7 +537,7 @@ vc4_validate_bin_cl(struct drm_device *dev,
 	exec->ct0ea = exec->ct0ca + dst_offset;
 
 	if (!exec->found_start_tile_binning_packet) {
-		DRM_ERROR("Bin CL missing VC4_PACKET_START_TILE_BINNING\n");
+		DRM_DEBUG("Bin CL missing VC4_PACKET_START_TILE_BINNING\n");
 		return -EINVAL;
 	}
 
@@ -549,7 +549,7 @@ vc4_validate_bin_cl(struct drm_device *dev,
 	 * semaphore increment.
 	 */
 	if (!exec->found_increment_semaphore_packet || !exec->found_flush) {
-		DRM_ERROR("Bin CL missing VC4_PACKET_INCREMENT_SEMAPHORE + "
+		DRM_DEBUG("Bin CL missing VC4_PACKET_INCREMENT_SEMAPHORE + "
 			  "VC4_PACKET_FLUSH\n");
 		return -EINVAL;
 	}
@@ -588,11 +588,11 @@ reloc_tex(struct vc4_exec_info *exec,
 		uint32_t remaining_size = tex->base.size - p0;
 
 		if (p0 > tex->base.size - 4) {
-			DRM_ERROR("UBO offset greater than UBO size\n");
+			DRM_DEBUG("UBO offset greater than UBO size\n");
 			goto fail;
 		}
 		if (p1 > remaining_size - 4) {
-			DRM_ERROR("UBO clamp would allow reads "
+			DRM_DEBUG("UBO clamp would allow reads "
 				  "outside of UBO\n");
 			goto fail;
 		}
@@ -612,14 +612,14 @@ reloc_tex(struct vc4_exec_info *exec,
 		if (VC4_GET_FIELD(p3, VC4_TEX_P2_PTYPE) ==
 		    VC4_TEX_P2_PTYPE_CUBE_MAP_STRIDE) {
 			if (cube_map_stride) {
-				DRM_ERROR("Cube map stride set twice\n");
+				DRM_DEBUG("Cube map stride set twice\n");
 				goto fail;
 			}
 
 			cube_map_stride = p3 & VC4_TEX_P2_CMST_MASK;
 		}
 		if (!cube_map_stride) {
-			DRM_ERROR("Cube map stride not set\n");
+			DRM_DEBUG("Cube map stride not set\n");
 			goto fail;
 		}
 	}
@@ -660,7 +660,7 @@ reloc_tex(struct vc4_exec_info *exec,
 	case VC4_TEXTURE_TYPE_RGBA64:
 	case VC4_TEXTURE_TYPE_YUV422R:
 	default:
-		DRM_ERROR("Texture format %d unsupported\n", type);
+		DRM_DEBUG("Texture format %d unsupported\n", type);
 		goto fail;
 	}
 	utile_w = utile_width(cpp);
@@ -713,7 +713,7 @@ reloc_tex(struct vc4_exec_info *exec,
 		level_size = aligned_width * cpp * aligned_height;
 
 		if (offset < level_size) {
-			DRM_ERROR("Level %d (%dx%d -> %dx%d) size %db "
+			DRM_DEBUG("Level %d (%dx%d -> %dx%d) size %db "
 				  "overflowed buffer bounds (offset %d)\n",
 				  i, level_width, level_height,
 				  aligned_width, aligned_height,
@@ -764,7 +764,7 @@ validate_gl_shader_rec(struct drm_device *dev,
 
 	nr_relocs = ARRAY_SIZE(shader_reloc_offsets) + nr_attributes;
 	if (nr_relocs * 4 > exec->shader_rec_size) {
-		DRM_ERROR("overflowed shader recs reading %d handles "
+		DRM_DEBUG("overflowed shader recs reading %d handles "
 			  "from %d bytes left\n",
 			  nr_relocs, exec->shader_rec_size);
 		return -EINVAL;
@@ -774,7 +774,7 @@ validate_gl_shader_rec(struct drm_device *dev,
 	exec->shader_rec_size -= nr_relocs * 4;
 
 	if (packet_size > exec->shader_rec_size) {
-		DRM_ERROR("overflowed shader recs copying %db packet "
+		DRM_DEBUG("overflowed shader recs copying %db packet "
 			  "from %d bytes left\n",
 			  packet_size, exec->shader_rec_size);
 		return -EINVAL;
@@ -794,7 +794,7 @@ validate_gl_shader_rec(struct drm_device *dev,
 
 	for (i = 0; i < shader_reloc_count; i++) {
 		if (src_handles[i] > exec->bo_count) {
-			DRM_ERROR("Shader handle %d too big\n", src_handles[i]);
+			DRM_DEBUG("Shader handle %d too big\n", src_handles[i]);
 			return -EINVAL;
 		}
 
@@ -810,13 +810,13 @@ validate_gl_shader_rec(struct drm_device *dev,
 
 	if (((*(uint16_t *)pkt_u & VC4_SHADER_FLAG_FS_SINGLE_THREAD) == 0) !=
 	    to_vc4_bo(&bo[0]->base)->validated_shader->is_threaded) {
-		DRM_ERROR("Thread mode of CL and FS do not match\n");
+		DRM_DEBUG("Thread mode of CL and FS do not match\n");
 		return -EINVAL;
 	}
 
 	if (to_vc4_bo(&bo[1]->base)->validated_shader->is_threaded ||
 	    to_vc4_bo(&bo[2]->base)->validated_shader->is_threaded) {
-		DRM_ERROR("cs and vs cannot be threaded\n");
+		DRM_DEBUG("cs and vs cannot be threaded\n");
 		return -EINVAL;
 	}
 
@@ -831,7 +831,7 @@ validate_gl_shader_rec(struct drm_device *dev,
 		*(uint32_t *)(pkt_v + o) = bo[i]->paddr + src_offset;
 
 		if (src_offset != 0) {
-			DRM_ERROR("Shaders must be at offset 0 of "
+			DRM_DEBUG("Shaders must be at offset 0 of "
 				  "the BO.\n");
 			return -EINVAL;
 		}
@@ -842,7 +842,7 @@ validate_gl_shader_rec(struct drm_device *dev,
 
 		if (validated_shader->uniforms_src_size >
 		    exec->uniforms_size) {
-			DRM_ERROR("Uniforms src buffer overflow\n");
+			DRM_DEBUG("Uniforms src buffer overflow\n");
 			return -EINVAL;
 		}
 
@@ -900,7 +900,7 @@ validate_gl_shader_rec(struct drm_device *dev,
 
 		if (vbo->base.size < offset ||
 		    vbo->base.size - offset < attr_size) {
-			DRM_ERROR("BO offset overflow (%d + %d > %zu)\n",
+			DRM_DEBUG("BO offset overflow (%d + %d > %zu)\n",
 				  offset, attr_size, vbo->base.size);
 			return -EINVAL;
 		}
@@ -909,7 +909,7 @@ validate_gl_shader_rec(struct drm_device *dev,
 			max_index = ((vbo->base.size - offset - attr_size) /
 				     stride);
 			if (state->max_index > max_index) {
-				DRM_ERROR("primitives use index %d out of "
+				DRM_DEBUG("primitives use index %d out of "
 					  "supplied %d\n",
 					  state->max_index, max_index);
 				return -EINVAL;
diff --git a/drivers/gpu/drm/vc4/vc4_validate_shaders.c b/drivers/gpu/drm/vc4/vc4_validate_shaders.c
index 0b2df5c6efb4..d3f15bf60900 100644
--- a/drivers/gpu/drm/vc4/vc4_validate_shaders.c
+++ b/drivers/gpu/drm/vc4/vc4_validate_shaders.c
@@ -200,7 +200,7 @@ check_tmu_write(struct vc4_validated_shader_info *validated_shader,
 		uint32_t clamp_reg, clamp_offset;
 
 		if (sig == QPU_SIG_SMALL_IMM) {
-			DRM_ERROR("direct TMU read used small immediate\n");
+			DRM_DEBUG("direct TMU read used small immediate\n");
 			return false;
 		}
 
@@ -209,7 +209,7 @@ check_tmu_write(struct vc4_validated_shader_info *validated_shader,
 		 */
 		if (is_mul ||
 		    QPU_GET_FIELD(inst, QPU_OP_ADD) != QPU_A_ADD) {
-			DRM_ERROR("direct TMU load wasn't an add\n");
+			DRM_DEBUG("direct TMU load wasn't an add\n");
 			return false;
 		}
 
@@ -220,13 +220,13 @@ check_tmu_write(struct vc4_validated_shader_info *validated_shader,
 		 */
 		clamp_reg = raddr_add_a_to_live_reg_index(inst);
 		if (clamp_reg == ~0) {
-			DRM_ERROR("direct TMU load wasn't clamped\n");
+			DRM_DEBUG("direct TMU load wasn't clamped\n");
 			return false;
 		}
 
 		clamp_offset = validation_state->live_min_clamp_offsets[clamp_reg];
 		if (clamp_offset == ~0) {
-			DRM_ERROR("direct TMU load wasn't clamped\n");
+			DRM_DEBUG("direct TMU load wasn't clamped\n");
 			return false;
 		}
 
@@ -238,7 +238,7 @@ check_tmu_write(struct vc4_validated_shader_info *validated_shader,
 
 		if (!(add_b == QPU_MUX_A && raddr_a == QPU_R_UNIF) &&
 		    !(add_b == QPU_MUX_B && raddr_b == QPU_R_UNIF)) {
-			DRM_ERROR("direct TMU load didn't add to a uniform\n");
+			DRM_DEBUG("direct TMU load didn't add to a uniform\n");
 			return false;
 		}
 
@@ -246,14 +246,14 @@ check_tmu_write(struct vc4_validated_shader_info *validated_shader,
 	} else {
 		if (raddr_a == QPU_R_UNIF || (sig != QPU_SIG_SMALL_IMM &&
 					      raddr_b == QPU_R_UNIF)) {
-			DRM_ERROR("uniform read in the same instruction as "
+			DRM_DEBUG("uniform read in the same instruction as "
 				  "texture setup.\n");
 			return false;
 		}
 	}
 
 	if (validation_state->tmu_write_count[tmu] >= 4) {
-		DRM_ERROR("TMU%d got too many parameters before dispatch\n",
+		DRM_DEBUG("TMU%d got too many parameters before dispatch\n",
 			  tmu);
 		return false;
 	}
@@ -265,7 +265,7 @@ check_tmu_write(struct vc4_validated_shader_info *validated_shader,
 	 */
 	if (!is_direct) {
 		if (validation_state->needs_uniform_address_update) {
-			DRM_ERROR("Texturing with undefined uniform address\n");
+			DRM_DEBUG("Texturing with undefined uniform address\n");
 			return false;
 		}
 
@@ -336,35 +336,35 @@ validate_uniform_address_write(struct vc4_validated_shader_info *validated_shade
 	case QPU_SIG_LOAD_TMU1:
 		break;
 	default:
-		DRM_ERROR("uniforms address change must be "
+		DRM_DEBUG("uniforms address change must be "
 			  "normal math\n");
 		return false;
 	}
 
 	if (is_mul || QPU_GET_FIELD(inst, QPU_OP_ADD) != QPU_A_ADD) {
-		DRM_ERROR("Uniform address reset must be an ADD.\n");
+		DRM_DEBUG("Uniform address reset must be an ADD.\n");
 		return false;
 	}
 
 	if (QPU_GET_FIELD(inst, QPU_COND_ADD) != QPU_COND_ALWAYS) {
-		DRM_ERROR("Uniform address reset must be unconditional.\n");
+		DRM_DEBUG("Uniform address reset must be unconditional.\n");
 		return false;
 	}
 
 	if (QPU_GET_FIELD(inst, QPU_PACK) != QPU_PACK_A_NOP &&
 	    !(inst & QPU_PM)) {
-		DRM_ERROR("No packing allowed on uniforms reset\n");
+		DRM_DEBUG("No packing allowed on uniforms reset\n");
 		return false;
 	}
 
 	if (add_lri == -1) {
-		DRM_ERROR("First argument of uniform address write must be "
+		DRM_DEBUG("First argument of uniform address write must be "
 			  "an immediate value.\n");
 		return false;
 	}
 
 	if (validation_state->live_immediates[add_lri] != expected_offset) {
-		DRM_ERROR("Resetting uniforms with offset %db instead of %db\n",
+		DRM_DEBUG("Resetting uniforms with offset %db instead of %db\n",
 			  validation_state->live_immediates[add_lri],
 			  expected_offset);
 		return false;
@@ -372,7 +372,7 @@ validate_uniform_address_write(struct vc4_validated_shader_info *validated_shade
 
 	if (!(add_b == QPU_MUX_A && raddr_a == QPU_R_UNIF) &&
 	    !(add_b == QPU_MUX_B && raddr_b == QPU_R_UNIF)) {
-		DRM_ERROR("Second argument of uniform address write must be "
+		DRM_DEBUG("Second argument of uniform address write must be "
 			  "a uniform.\n");
 		return false;
 	}
@@ -417,7 +417,7 @@ check_reg_write(struct vc4_validated_shader_info *validated_shader,
 	switch (waddr) {
 	case QPU_W_UNIFORMS_ADDRESS:
 		if (is_b) {
-			DRM_ERROR("relative uniforms address change "
+			DRM_DEBUG("relative uniforms address change "
 				  "unsupported\n");
 			return false;
 		}
@@ -452,11 +452,11 @@ check_reg_write(struct vc4_validated_shader_info *validated_shader,
 		/* XXX: I haven't thought about these, so don't support them
 		 * for now.
 		 */
-		DRM_ERROR("Unsupported waddr %d\n", waddr);
+		DRM_DEBUG("Unsupported waddr %d\n", waddr);
 		return false;
 
 	case QPU_W_VPM_ADDR:
-		DRM_ERROR("General VPM DMA unsupported\n");
+		DRM_DEBUG("General VPM DMA unsupported\n");
 		return false;
 
 	case QPU_W_VPM:
@@ -559,7 +559,7 @@ check_instruction_writes(struct vc4_validated_shader_info *validated_shader,
 	bool ok;
 
 	if (is_tmu_write(waddr_add) && is_tmu_write(waddr_mul)) {
-		DRM_ERROR("ADD and MUL both set up textures\n");
+		DRM_DEBUG("ADD and MUL both set up textures\n");
 		return false;
 	}
 
@@ -588,7 +588,7 @@ check_branch(uint64_t inst,
 	 * there's no need for it.
 	 */
 	if (waddr_add != QPU_W_NOP || waddr_mul != QPU_W_NOP) {
-		DRM_ERROR("branch instruction at %d wrote a register.\n",
+		DRM_DEBUG("branch instruction at %d wrote a register.\n",
 			  validation_state->ip);
 		return false;
 	}
@@ -614,7 +614,7 @@ check_instruction_reads(struct vc4_validated_shader_info *validated_shader,
 		validated_shader->uniforms_size += 4;
 
 		if (validation_state->needs_uniform_address_update) {
-			DRM_ERROR("Uniform read with undefined uniform "
+			DRM_DEBUG("Uniform read with undefined uniform "
 				  "address\n");
 			return false;
 		}
@@ -660,19 +660,19 @@ vc4_validate_branches(struct vc4_shader_validation_state *validation_state)
 			continue;
 
 		if (ip - last_branch < 4) {
-			DRM_ERROR("Branch at %d during delay slots\n", ip);
+			DRM_DEBUG("Branch at %d during delay slots\n", ip);
 			return false;
 		}
 		last_branch = ip;
 
 		if (inst & QPU_BRANCH_REG) {
-			DRM_ERROR("branching from register relative "
+			DRM_DEBUG("branching from register relative "
 				  "not supported\n");
 			return false;
 		}
 
 		if (!(inst & QPU_BRANCH_REL)) {
-			DRM_ERROR("relative branching required\n");
+			DRM_DEBUG("relative branching required\n");
 			return false;
 		}
 
@@ -682,13 +682,13 @@ vc4_validate_branches(struct vc4_shader_validation_state *validation_state)
 		 * end of the shader object.
 		 */
 		if (branch_imm % sizeof(inst) != 0) {
-			DRM_ERROR("branch target not aligned\n");
+			DRM_DEBUG("branch target not aligned\n");
 			return false;
 		}
 
 		branch_target_ip = after_delay_ip + (branch_imm >> 3);
 		if (branch_target_ip >= validation_state->max_ip) {
-			DRM_ERROR("Branch at %d outside of shader (ip %d/%d)\n",
+			DRM_DEBUG("Branch at %d outside of shader (ip %d/%d)\n",
 				  ip, branch_target_ip,
 				  validation_state->max_ip);
 			return false;
@@ -699,7 +699,7 @@ vc4_validate_branches(struct vc4_shader_validation_state *validation_state)
 		 * the shader.
 		 */
 		if (after_delay_ip >= validation_state->max_ip) {
-			DRM_ERROR("Branch at %d continues past shader end "
+			DRM_DEBUG("Branch at %d continues past shader end "
 				  "(%d/%d)\n",
 				  ip, after_delay_ip, validation_state->max_ip);
 			return false;
@@ -709,7 +709,7 @@ vc4_validate_branches(struct vc4_shader_validation_state *validation_state)
 	}
 
 	if (max_branch_target > validation_state->max_ip - 3) {
-		DRM_ERROR("Branch landed after QPU_SIG_PROG_END");
+		DRM_DEBUG("Branch landed after QPU_SIG_PROG_END");
 		return false;
 	}
 
@@ -750,7 +750,7 @@ vc4_handle_branch_target(struct vc4_shader_validation_state *validation_state)
 		return true;
 
 	if (texturing_in_progress(validation_state)) {
-		DRM_ERROR("Branch target landed during TMU setup\n");
+		DRM_DEBUG("Branch target landed during TMU setup\n");
 		return false;
 	}
 
@@ -837,7 +837,7 @@ vc4_validate_shader(struct drm_gem_cma_object *shader_obj)
 		case QPU_SIG_LAST_THREAD_SWITCH:
 			if (!check_instruction_writes(validated_shader,
 						      &validation_state)) {
-				DRM_ERROR("Bad write at ip %d\n", ip);
+				DRM_DEBUG("Bad write at ip %d\n", ip);
 				goto fail;
 			}
 
@@ -855,7 +855,7 @@ vc4_validate_shader(struct drm_gem_cma_object *shader_obj)
 				validated_shader->is_threaded = true;
 
 				if (ip < last_thread_switch_ip + 3) {
-					DRM_ERROR("Thread switch too soon after "
+					DRM_DEBUG("Thread switch too soon after "
 						  "last switch at ip %d\n", ip);
 					goto fail;
 				}
@@ -867,7 +867,7 @@ vc4_validate_shader(struct drm_gem_cma_object *shader_obj)
 		case QPU_SIG_LOAD_IMM:
 			if (!check_instruction_writes(validated_shader,
 						      &validation_state)) {
-				DRM_ERROR("Bad LOAD_IMM write at ip %d\n", ip);
+				DRM_DEBUG("Bad LOAD_IMM write at ip %d\n", ip);
 				goto fail;
 			}
 			break;
@@ -878,14 +878,14 @@ vc4_validate_shader(struct drm_gem_cma_object *shader_obj)
 				goto fail;
 
 			if (ip < last_thread_switch_ip + 3) {
-				DRM_ERROR("Branch in thread switch at ip %d",
+				DRM_DEBUG("Branch in thread switch at ip %d",
 					  ip);
 				goto fail;
 			}
 
 			break;
 		default:
-			DRM_ERROR("Unsupported QPU signal %d at "
+			DRM_DEBUG("Unsupported QPU signal %d at "
 				  "instruction %d\n", sig, ip);
 			goto fail;
 		}
@@ -898,7 +898,7 @@ vc4_validate_shader(struct drm_gem_cma_object *shader_obj)
 	}
 
 	if (ip == validation_state.max_ip) {
-		DRM_ERROR("shader failed to terminate before "
+		DRM_DEBUG("shader failed to terminate before "
 			  "shader BO end at %zd\n",
 			  shader_obj->base.size);
 		goto fail;
@@ -907,7 +907,7 @@ vc4_validate_shader(struct drm_gem_cma_object *shader_obj)
 	/* Might corrupt other thread */
 	if (validated_shader->is_threaded &&
 	    validation_state.all_registers_used) {
-		DRM_ERROR("Shader uses threading, but uses the upper "
+		DRM_DEBUG("Shader uses threading, but uses the upper "
 			  "half of the registers, too\n");
 		goto fail;
 	}