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Diffstat (limited to 'drivers/gpu/drm/display/drm_dp_helper.c')
| -rw-r--r-- | drivers/gpu/drm/display/drm_dp_helper.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/display/drm_dp_helper.c b/drivers/gpu/drm/display/drm_dp_helper.c index 266826eac4a75b..f5d4be89786609 100644 --- a/drivers/gpu/drm/display/drm_dp_helper.c +++ b/drivers/gpu/drm/display/drm_dp_helper.c @@ -4111,6 +4111,13 @@ int drm_dp_bw_overhead(int lane_count, int hactive, u32 overhead = 1000000; int symbol_cycles; + if (lane_count == 0 || hactive == 0 || bpp_x16 == 0) { + DRM_DEBUG_KMS("Invalid BW overhead params: lane_count %d, hactive %d, bpp_x16 %d.%04d\n", + lane_count, hactive, + bpp_x16 >> 4, (bpp_x16 & 0xf) * 625); + return 0; + } + /* * DP Standard v2.1 2.6.4.1 * SSC downspread and ref clock variation margin: |