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From: Ville Syrjala <ville.syrjala@linux.intel.com>
To: dri-devel@lists.freedesktop.org
Cc: intel-gfx@lists.freedesktop.org
Subject: [PATCH 2/3] drm: Print bad user modes
Date: Mon, 11 Jun 2018 22:34:02 +0300	[thread overview]
Message-ID: <20180611193403.16118-2-ville.syrjala@linux.intel.com> (raw)
In-Reply-To: <20180611193403.16118-1-ville.syrjala@linux.intel.com>

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Print out the modeline when we reject a bad user mode. Avoids having to
guess why it was rejected.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/drm_atomic.c        | 20 +++++++++++++++++---
 drivers/gpu/drm/drm_crtc.c          |  4 +++-
 drivers/gpu/drm/drm_crtc_internal.h |  3 +++
 drivers/gpu/drm/drm_modes.c         |  2 +-
 4 files changed, 24 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index d7de83a6c1c2..5fe5e06062a9 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -400,10 +400,24 @@ int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
 	memset(&state->mode, 0, sizeof(state->mode));
 
 	if (blob) {
-		if (blob->length != sizeof(struct drm_mode_modeinfo) ||
-		    drm_mode_convert_umode(state->crtc->dev, &state->mode,
-					   blob->data))
+		int ret;
+
+		if (blob->length != sizeof(struct drm_mode_modeinfo)) {
+			DRM_DEBUG_ATOMIC("[CRTC:%d:%s] bad mode blob length: %zu\n",
+					 crtc->base.id, crtc->name,
+					 blob->length);
+			return -EINVAL;
+		}
+
+		ret = drm_mode_convert_umode(crtc->dev,
+					     &state->mode, blob->data);
+		if (ret) {
+			DRM_DEBUG_ATOMIC("[CRTC:%d:%s] invalid mode (ret=%d, status=%s):\n",
+					 crtc->base.id, crtc->name,
+					 ret, drm_get_mode_status_name(state->mode.status));
+			drm_mode_debug_printmodeline(&state->mode);
 			return -EINVAL;
+		}
 
 		state->mode_blob = drm_property_blob_get(blob);
 		state->enable = true;
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 53828fc8d911..163d82ac7d76 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -649,7 +649,9 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data,
 
 		ret = drm_mode_convert_umode(dev, mode, &crtc_req->mode);
 		if (ret) {
-			DRM_DEBUG_KMS("Invalid mode\n");
+			DRM_DEBUG_KMS("Invalid mode (ret=%d, status=%s)\n",
+				      ret, drm_get_mode_status_name(mode->status));
+			drm_mode_debug_printmodeline(mode);
 			goto out;
 		}
 
diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
index 5d307b23a4e6..34499800932a 100644
--- a/drivers/gpu/drm/drm_crtc_internal.h
+++ b/drivers/gpu/drm/drm_crtc_internal.h
@@ -56,6 +56,9 @@ int drm_mode_setcrtc(struct drm_device *dev,
 int drm_modeset_register_all(struct drm_device *dev);
 void drm_modeset_unregister_all(struct drm_device *dev);
 
+/* drm_modes.c */
+const char *drm_get_mode_status_name(enum drm_mode_status status);
+
 /* IOCTLs */
 int drm_mode_getresources(struct drm_device *dev,
 			  void *data, struct drm_file *file_priv);
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index c78ca0e84ffd..7f552d5fa88e 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -1257,7 +1257,7 @@ static const char * const drm_mode_status_names[] = {
 
 #undef MODE_STATUS
 
-static const char *drm_get_mode_status_name(enum drm_mode_status status)
+const char *drm_get_mode_status_name(enum drm_mode_status status)
 {
 	int index = status + 3;
 
-- 
2.16.4

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  reply	other threads:[~2018-06-11 19:34 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-11 19:34 [PATCH 1/3] drm/atomic: Improve debug messages Ville Syrjala
2018-06-11 19:34 ` Ville Syrjala [this message]
2018-06-12 19:09   ` [PATCH 2/3] drm: Print bad user modes Harry Wentland
2018-06-15 20:32     ` Ville Syrjälä
2018-06-11 19:34 ` [PATCH 3/3] drm/i915: Print prop name/id when rejecting it Ville Syrjala
2018-06-18  8:53   ` Daniel Vetter
2018-06-18 12:03     ` Ville Syrjälä
2018-06-18 16:04       ` [Intel-gfx] " Daniel Vetter
2018-06-11 20:00 ` ✓ Fi.CI.BAT: success for series starting with [1/3] drm/atomic: Improve debug messages Patchwork
2018-06-12  1:47 ` ✓ Fi.CI.IGT: " Patchwork
2018-06-12 19:09 ` [PATCH 1/3] " Harry Wentland

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