As this debugs entry can be used to set arbitrary value to next_seqno,
use i915_gem_seqno_init to set the next_seqno.
Signed-off-by: Mika Kuoppala <mika.kuoppala at intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 7047c4a..e669e2e 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -903,12 +903,17 @@ i915_next_seqno_write(struct file *filp,
if (ret)
return ret;
- if (i915_seqno_passed(val, dev_priv->next_seqno)) {
- dev_priv->next_seqno = val;
- DRM_DEBUG_DRIVER("Advancing seqno to %u\n", val);
- } else {
- ret = -EINVAL;
- }
+ ret = i915_gem_init_seqno(dev, val - 1);
+ if (ret)
+ return ret;
+
+ dev_priv->next_seqno = val;
+
+ /* Carefully set the last_seqno value so that
+ * wrap detection still works */
+ dev_priv->last_seqno = val - 1;
+ if (dev_priv->last_seqno == 0)
+ dev_priv->last_seqno--;
mutex_unlock(&dev->struct_mutex);
--
1.7.9.5
