Falling back to the lowest value is likely the only thing we can do, but doing it silently seems like a bad thing to do. Catch it early and make loud noises.
Cc: Alex Deucher <[email protected]> Cc: Thierry Reding <[email protected]> Cc: Rob Clark <[email protected]> Cc: Sean Paul <[email protected]> Cc: Manasi Navare <[email protected]> Cc: [email protected] Signed-off-by: Jani Nikula <[email protected]> --- drivers/gpu/drm/drm_dp_helper.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 08af8d6b844b..dca21b5a03ec 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -137,8 +137,10 @@ EXPORT_SYMBOL(drm_dp_link_train_channel_eq_delay); u8 drm_dp_link_rate_to_bw_code(int link_rate) { switch (link_rate) { - case 162000: default: + WARN(1, "unknown DP link rate %d, using %x\n", link_rate, + DP_LINK_BW_1_62); + case 162000: return DP_LINK_BW_1_62; case 270000: return DP_LINK_BW_2_7; @@ -151,8 +153,9 @@ EXPORT_SYMBOL(drm_dp_link_rate_to_bw_code); int drm_dp_bw_code_to_link_rate(u8 link_bw) { switch (link_bw) { - case DP_LINK_BW_1_62: default: + WARN(1, "unknown DP link bw code %x, using 162000\n", link_bw); + case DP_LINK_BW_1_62: return 162000; case DP_LINK_BW_2_7: return 270000; -- 2.11.0 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
