diff options
Diffstat (limited to 'drivers/gpu/drm/drm_dp_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_dp_helper.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 213fb837e1c4..b3d68964b407 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; @@ -544,7 +547,7 @@ void drm_dp_downstream_debug(struct seq_file *m, DP_DETAILED_CAP_INFO_AVAILABLE; int clk; int bpc; - char id[6]; + char id[7]; int len; uint8_t rev[2]; int type = port_cap[0] & DP_DS_PORT_TYPE_MASK; @@ -583,6 +586,7 @@ void drm_dp_downstream_debug(struct seq_file *m, seq_puts(m, "\t\tType: N/A\n"); } + memset(id, 0, sizeof(id)); drm_dp_downstream_id(aux, id); seq_printf(m, "\t\tID: %s\n", id); @@ -591,7 +595,7 @@ void drm_dp_downstream_debug(struct seq_file *m, seq_printf(m, "\t\tHW: %d.%d\n", (rev[0] & 0xf0) >> 4, rev[0] & 0xf); - len = drm_dp_dpcd_read(aux, DP_BRANCH_SW_REV, &rev, 2); + len = drm_dp_dpcd_read(aux, DP_BRANCH_SW_REV, rev, 2); if (len > 0) seq_printf(m, "\t\tSW: %d.%d\n", rev[0], rev[1]); |