From: Gaghik Khachatrian <[email protected]>

[Why] Compiler generates compiler warnings when signed enum
constants or literal -1 are implicitly converted to unsigned
integer types, cluttering build output and masking genuine issues.

[How] Use UINT_MAX as the invalid sentinel for unsigned IDs and align
loop/index types to unsigned where appropriate to remove implicit
signed-to-unsigned conversions, with no functional behavior change.

Reviewed-by: Nicholas Kazlauskas <[email protected]>
Signed-off-by: Gaghik Khachatrian <[email protected]>
Signed-off-by: Chuanyu Tseng <[email protected]>
---
 drivers/gpu/drm/amd/display/dc/dml2_0/dml2_dc_resource_mgmt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml2_0/dml2_dc_resource_mgmt.c 
b/drivers/gpu/drm/amd/display/dc/dml2_0/dml2_dc_resource_mgmt.c
index 74812a7d5e28..fd3c61509f1b 100644
--- a/drivers/gpu/drm/amd/display/dc/dml2_0/dml2_dc_resource_mgmt.c
+++ b/drivers/gpu/drm/amd/display/dc/dml2_0/dml2_dc_resource_mgmt.c
@@ -143,7 +143,7 @@ static unsigned int find_pipes_assigned_to_plane(struct 
dml2_context *ctx,
 {
        int i;
        unsigned int num_found = 0;
-       unsigned int plane_id_assigned_to_pipe = -1;
+       unsigned int plane_id_assigned_to_pipe = UINT_MAX;
 
        for (i = 0; i < ctx->config.dcn_pipe_count; i++) {
                struct pipe_ctx *pipe = &state->res_ctx.pipe_ctx[i];
-- 
2.43.0

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