From c2b4cacfe9816c1fe378c785ce8a678cf0635ec6 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 8 Jul 2013 18:16:56 -0400 Subject: [PATCH] drm/radeon/hdmi: make sure we have an afmt block assigned Prevents a segfault if an afmt block is not assigned to the encoder such as in the LVDS or eDP case. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=66714 Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/evergreen_hdmi.c | 6 ++++++ drivers/gpu/drm/radeon/r600_hdmi.c | 6 ++++++ 2 files changed, 12 insertions(+) diff --git a/drivers/gpu/drm/radeon/evergreen_hdmi.c b/drivers/gpu/drm/radeon/evergreen_hdmi.c index b9c6f7675e59..b0d3fb341417 100644 --- a/drivers/gpu/drm/radeon/evergreen_hdmi.c +++ b/drivers/gpu/drm/radeon/evergreen_hdmi.c @@ -177,6 +177,9 @@ void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode uint32_t offset; ssize_t err; + if (!dig || !dig->afmt) + return; + /* Silent, r600_hdmi_enable will raise WARN for us */ if (!dig->afmt->enabled) return; @@ -280,6 +283,9 @@ void evergreen_hdmi_enable(struct drm_encoder *encoder, bool enable) struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; + if (!dig || !dig->afmt) + return; + /* Silent, r600_hdmi_enable will raise WARN for us */ if (enable && dig->afmt->enabled) return; diff --git a/drivers/gpu/drm/radeon/r600_hdmi.c b/drivers/gpu/drm/radeon/r600_hdmi.c index e73b2a73494a..f48240bb8c56 100644 --- a/drivers/gpu/drm/radeon/r600_hdmi.c +++ b/drivers/gpu/drm/radeon/r600_hdmi.c @@ -266,6 +266,9 @@ void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mod uint32_t offset; ssize_t err; + if (!dig || !dig->afmt) + return; + /* Silent, r600_hdmi_enable will raise WARN for us */ if (!dig->afmt->enabled) return; @@ -448,6 +451,9 @@ void r600_hdmi_enable(struct drm_encoder *encoder, bool enable) struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; u32 hdmi = HDMI0_ERROR_ACK; + if (!dig || !dig->afmt) + return; + /* Silent, r600_hdmi_enable will raise WARN for us */ if (enable && dig->afmt->enabled) return;