Make has_modifier() return true for linear modifiers

src/backend/allocator/dmabuf.rs

@@ -246,9 +246,9 @@ impl Dmabuf {
         self.0.planes.iter().map(|p| p.stride)
     }
 
-    /// Returns if this buffer format has any vendor-specific modifiers set or is implicit/linear
+    /// Returns if this buffer format has any vendor-specific modifiers set or is implicit
     pub fn has_modifier(&self) -> bool {
-        self.0.modifier != Modifier::Invalid && self.0.modifier != Modifier::Linear
+        self.0.modifier != Modifier::Invalid
     }
 
     /// Returns if the buffer is stored inverted on the y-axis

src/backend/allocator/gbm.rs

@@ -364,7 +364,10 @@ impl Dmabuf {
             offsets[i] = offset as i32;
         }
 
-        if self.has_modifier() || self.num_planes() > 1 || self.offsets().next().unwrap() != 0 {
+        if (self.has_modifier() && self.format().modifier != Modifier::Linear)
+            || self.num_planes() > 1
+            || self.offsets().next().unwrap() != 0
+        {
             gbm.import_buffer_object_from_dma_buf_with_modifiers(
                 self.num_planes() as u32,
                 handles,