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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-04-25 11:51:21 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-04-25 11:51:21 +0300 |
| commit | 7f0020417b7bceaa10cf9e1efe2b3f5c554d972e (patch) | |
| tree | 69d11757acfb4bacfb5f82f6f0fbf04339b3cd38 /drivers/gpu/drm/ast/ast_dp.c | |
| parent | 616e143c9fd88562b4d2cb235834c620fe65ba22 (diff) | |
| parent | ea061bad207e1ba693b5488ba64c663f7ca03f50 (diff) | |
| download | linux-rolling-stable.tar.xz | |
Merge v6.14.4linux-rolling-stable
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu/drm/ast/ast_dp.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_dp.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ast/ast_dp.c b/drivers/gpu/drm/ast/ast_dp.c index b9eb67e3fa90..2d7482a65f62 100644 --- a/drivers/gpu/drm/ast/ast_dp.c +++ b/drivers/gpu/drm/ast/ast_dp.c @@ -17,6 +17,12 @@ static bool ast_astdp_is_connected(struct ast_device *ast) { if (!ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xDF, AST_IO_VGACRDF_HPD)) return false; + /* + * HPD might be set even if no monitor is connected, so also check that + * the link training was successful. + */ + if (!ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xDC, AST_IO_VGACRDC_LINK_SUCCESS)) + return false; return true; } |