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-rw-r--r--src/sna/sna_display.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/sna/sna_display.c b/src/sna/sna_display.c
index 7b1ef883..7b1684f8 100644
--- a/src/sna/sna_display.c
+++ b/src/sna/sna_display.c
@@ -2612,7 +2612,7 @@ sna_mode_compute_possible_outputs(ScrnInfoPtr scrn)
assert(config->num_output < 32);
assert(config->num_crtc < 32);
- crtc_mask = (1 << (config->num_crtc + 1)) - 1;
+ crtc_mask = (1 << config->num_crtc) - 1;
/* Convert from encoder numbering to output numbering */
for (i = 0; i < config->num_output; i++) {