[PATCH] drm/amd/display: fix compilation issue with legacy gcc

[Chen, Guchun]

Reviewed-by: Guchun Chen <guchun.chen at amd.com>

Regards,
Guchun

-----Original Message-----
From: bobzhou <bobzhou2 at amd.com> 
Sent: Friday, November 18, 2022 9:06 AM
To: amd-gfx at lists.freedesktop.org
Cc: Chen, Guchun <Guchun.Chen at amd.com>; Zhou, Bob <Bob.Zhou at amd.com>
Subject: [PATCH] drm/amd/display: fix compilation issue with legacy gcc

From: Bob zhou <bobzhou2 at amd.com>

    This patch is used to fix following compilation issue with legacy gcc

    error: ‘for’ loop initial declarations are only allowed in C99 mode
	for (int i = flag_vlevel; i < context->bw_ctx.dml.soc.num_states; i++) {

Signed-off-by: Bob zhou <bobzhou2 at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
index 7e64ea6a0973..97c15c4d2805 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -1761,6 +1761,7 @@ bool dcn32_internal_validate_bw(struct dc *dc,
 	if (repopulate_pipes) {
 		int flag_max_mpc_comb = vba->maxMpcComb;
 		int flag_vlevel = vlevel;
+		int i;
 
 		pipe_cnt = dc->res_pool->funcs->populate_dml_pipes(dc, context, pipes, fast_validate);
 
@@ -1779,7 +1780,7 @@ bool dcn32_internal_validate_bw(struct dc *dc,
 				flag_max_mpc_comb != context->bw_ctx.dml.vba.maxMpcComb) {
 			/* check the context constructed with pipe split flags is still valid*/
 			bool flags_valid = false;
-			for (int i = flag_vlevel; i < context->bw_ctx.dml.soc.num_states; i++) {
+			for (i = flag_vlevel; i < context->bw_ctx.dml.soc.num_states; i++) {
 				if (vba->ModeSupport[i][flag_max_mpc_comb]) {
 					vba->maxMpcComb = flag_max_mpc_comb;
 					vba->VoltageLevel = i;
-- 
2.25.1