diff options
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c index f263e1a4537e..cb4bb67289a4 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c @@ -759,6 +759,7 @@ static ssize_t dp_phy_test_pattern_debugfs_write(struct file *f, const char __us int max_param_num = 11; enum dp_test_pattern test_pattern = DP_TEST_PATTERN_UNSUPPORTED; bool disable_hpd = false; + bool supports_hpd = link->irq_source_hpd != DC_IRQ_SOURCE_INVALID; bool valid_test_pattern = false; uint8_t param_nums = 0; /* init with default 80bit custom pattern */ @@ -850,7 +851,7 @@ static ssize_t dp_phy_test_pattern_debugfs_write(struct file *f, const char __us * because it might have been disabled after a test pattern was set. * AUX depends on HPD * sequence dependent, do not move! */ - if (!disable_hpd) + if (supports_hpd && !disable_hpd) dc_link_enable_hpd(link); prefer_link_settings.lane_count = link->verified_link_cap.lane_count; @@ -888,7 +889,7 @@ static ssize_t dp_phy_test_pattern_debugfs_write(struct file *f, const char __us * Need disable interrupt to avoid SW driver disable DP output. This is * done after the test pattern is set. */ - if (valid_test_pattern && disable_hpd) + if (valid_test_pattern && supports_hpd && disable_hpd) dc_link_disable_hpd(link); kfree(wr_buf); |