Noticed this when trying to compile with -Wall on a kernel fork. We potentially don't set width here, which causes the compiler to complain about width potentially being uninitialized in drm_cvt_modes(). So, let's fix that. Changes since v1: * Don't emit an error as this code isn't reachable, just mark it as such Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> # v5.9+ Fixes: 3f649ab728cd ("treewide: Remove uninitialized_var() usage") Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx> --- drivers/gpu/drm/drm_edid.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 631125b46e04..0643b98c6383 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3094,6 +3094,7 @@ static int drm_cvt_modes(struct drm_connector *connector, for (i = 0; i < 4; i++) { int width, height; + u8 cvt_aspect_ratio; cvt = &(timing->data.other_data.data.cvt[i]); @@ -3101,7 +3102,8 @@ static int drm_cvt_modes(struct drm_connector *connector, continue; height = (cvt->code[0] + ((cvt->code[1] & 0xf0) << 4) + 1) * 2; - switch (cvt->code[1] & 0x0c) { + cvt_aspect_ratio = cvt->code[1] & 0x0c; + switch (cvt_aspect_ratio) { case 0x00: width = height * 4 / 3; break; @@ -3114,6 +3116,8 @@ static int drm_cvt_modes(struct drm_connector *connector, case 0x0c: width = height * 15 / 9; break; + default: + unreachable(); } for (j = 1; j < 5; j++) { -- 2.28.0 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel