diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
index 0bf8959..741da36 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
@@ -2071,7 +2071,7 @@
 	u32 tmp, viewport_w, viewport_h;
 	int r;
 	bool bypass_lut = false;
-	const char *format_name;
+	char *format_name;
 
 	/* no fb bound */
 	if (!atomic && !crtc->primary->fb) {
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
index 1558a97..2282eb6 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
@@ -2046,7 +2046,7 @@
 	u32 tmp, viewport_w, viewport_h;
 	int r;
 	bool bypass_lut = false;
-	const char *format_name;
+	char *format_name;
 
 	/* no fb bound */
 	if (!atomic && !crtc->primary->fb) {
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
index 71a0375..8b7ad34 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
@@ -1952,7 +1952,7 @@
 	u32 viewport_w, viewport_h;
 	int r;
 	bool bypass_lut = false;
-	const char *format_name;
+	char *format_name;
 
 	/* no fb bound */
 	if (!atomic && !crtc->primary->fb) {
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 087391f..5cb2e22 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -837,7 +837,7 @@
 	/* Check whether this plane supports the fb pixel format. */
 	ret = drm_plane_check_pixel_format(plane, state->fb->pixel_format);
 	if (ret) {
-		const char *format_name = drm_get_format_name(state->fb->pixel_format);
+		char *format_name = drm_get_format_name(state->fb->pixel_format);
 		DRM_DEBUG_ATOMIC("Invalid pixel format %s\n", format_name);
 		kfree(format_name);
 		return ret;
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index f4e3ebe..93ea5dd 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -2592,7 +2592,7 @@
 	/* Check whether this plane supports the fb pixel format. */
 	ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
 	if (ret) {
-		const char *format_name = drm_get_format_name(fb->pixel_format);
+		char *format_name = drm_get_format_name(fb->pixel_format);
 		DRM_DEBUG_KMS("Invalid pixel format %s\n", format_name);
 		kfree(format_name);
 		goto out;
@@ -2903,7 +2903,7 @@
 			ret = drm_plane_check_pixel_format(crtc->primary,
 							   fb->pixel_format);
 			if (ret) {
-				const char *format_name = drm_get_format_name(fb->pixel_format);
+				char *format_name = drm_get_format_name(fb->pixel_format);
 				DRM_DEBUG_KMS("Invalid pixel format %s\n", format_name);
 				kfree(format_name);
 				goto out;
@@ -3281,7 +3281,7 @@
 static int format_check(const struct drm_mode_fb_cmd2 *r)
 {
 	uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
-	const char *format_name;
+	char *format_name;
 
 	switch (format) {
 	case DRM_FORMAT_C8:
@@ -3359,7 +3359,7 @@
 
 	ret = format_check(r);
 	if (ret) {
-		const char *format_name = drm_get_format_name(r->pixel_format);
+		char *format_name = drm_get_format_name(r->pixel_format);
 		DRM_DEBUG_KMS("bad framebuffer format %s\n", format_name);
 		kfree(format_name);
 		return ret;
diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
index d8f65c4..c81546c 100644
--- a/drivers/gpu/drm/drm_fourcc.c
+++ b/drivers/gpu/drm/drm_fourcc.c
@@ -42,7 +42,7 @@
  * Note that the buffer returned by this function is owned by the caller
  * and will need to be freed using kfree().
  */
-const char *drm_get_format_name(uint32_t format)
+char *drm_get_format_name(uint32_t format)
 {
 	char *buf = kmalloc(32, GFP_KERNEL);
 
@@ -71,7 +71,7 @@
 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
 			  int *bpp)
 {
-	const char *format_name;
+	char *format_name;
 
 	switch (format) {
 	case DRM_FORMAT_C8:
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
index ac7fa02..eaa3df7 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
@@ -608,7 +608,7 @@
 			 u32 ch, u32 y, u32 in_h, u32 fmt)
 {
 	struct drm_gem_cma_object *obj = drm_fb_cma_get_gem_obj(fb, 0);
-	const char *format_name;
+	char *format_name;
 	u32 reg_ctrl, reg_addr, reg_size, reg_stride, reg_space, reg_en;
 	u32 stride = fb->pitches[0];
 	u32 addr = (u32)obj->paddr + y * stride;
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 120869e..64e41cf 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -3113,7 +3113,7 @@
 	for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) {
 		struct drm_plane_state *state;
 		struct drm_plane *plane = &intel_plane->base;
-		const char *format_name;
+		char *format_name;
 
 		if (!plane->state) {
 			seq_puts(m, "plane->state is NULL!\n");
diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c b/drivers/gpu/drm/i915/intel_atomic_plane.c
index 98288d8..b82de30 100644
--- a/drivers/gpu/drm/i915/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/intel_atomic_plane.c
@@ -143,7 +143,7 @@
 		crtc_state->base.enable ? crtc_state->pipe_src_h : 0;
 
 	if (state->fb && intel_rotation_90_or_270(state->rotation)) {
-		const char *format_name;
+		char *format_name;
 		if (!(state->fb->modifier[0] == I915_FORMAT_MOD_Y_TILED ||
 			state->fb->modifier[0] == I915_FORMAT_MOD_Yf_TILED)) {
 			DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n");
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index acc1ba3..3902e57 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12258,7 +12258,7 @@
 
 	DRM_DEBUG_KMS("planes on this crtc\n");
 	list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
-		const char *format_name;
+		char *format_name;
 		intel_plane = to_intel_plane(plane);
 		if (intel_plane->pipe != crtc->pipe)
 			continue;
@@ -14915,7 +14915,7 @@
 	unsigned int aligned_height;
 	int ret;
 	u32 pitch_limit, stride_alignment;
-	const char *format_name;
+	char *format_name;
 
 	WARN_ON(!mutex_is_locked(&dev->struct_mutex));
 
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 981ca3f..a89c480 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -1154,7 +1154,7 @@
 	u32 tmp, viewport_w, viewport_h;
 	int r;
 	bool bypass_lut = false;
-	const char *format_name;
+	char *format_name;
 
 	/* no fb bound */
 	if (!atomic && !crtc->primary->fb) {
@@ -1471,7 +1471,7 @@
 	u32 viewport_w, viewport_h;
 	int r;
 	bool bypass_lut = false;
-	const char *format_name;
+	char *format_name;
 
 	/* no fb bound */
 	if (!atomic && !crtc->primary->fb) {