diff --git a/patches/4.19/0001-surface-acpi.patch b/patches/4.19/0001-surface-acpi.patch
index 475825ed9..50797a2e0 100644
--- a/patches/4.19/0001-surface-acpi.patch
+++ b/patches/4.19/0001-surface-acpi.patch
@@ -1595,7 +1595,7 @@ index 000000000000..ab793f6774a0
 +static bool surfacegen5_idma_filter(struct dma_chan *chan, void *param)
 +{
 +	// see dw8250_idma_filter
-+	return param == chan->device->dev->parent;
++	return param == chan->device->dev;
 +}
 +
 +static int surfacegen5_ssh_check_dma(struct serdev_device *serdev)
diff --git a/patches/5.1/0001-surface-acpi.patch b/patches/5.1/0001-surface-acpi.patch
index 8d1e9253a..6ea7f3967 100644
--- a/patches/5.1/0001-surface-acpi.patch
+++ b/patches/5.1/0001-surface-acpi.patch
@@ -1574,7 +1574,7 @@ index 000000000000..ab793f6774a0
 +static bool surfacegen5_idma_filter(struct dma_chan *chan, void *param)
 +{
 +	// see dw8250_idma_filter
-+	return param == chan->device->dev->parent;
++	return param == chan->device->dev;
 +}
 +
 +static int surfacegen5_ssh_check_dma(struct serdev_device *serdev)