diff --git a/drivers/fpga/dfl-fme-pr.c b/drivers/fpga/dfl-fme-pr.c
index 6ec0f09e5994..3c71dc3faaf5 100644
--- a/drivers/fpga/dfl-fme-pr.c
+++ b/drivers/fpga/dfl-fme-pr.c
@@ -74,6 +74,7 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg)
 	struct dfl_fme *fme;
 	unsigned long minsz;
 	void *buf = NULL;
+	size_t length;
 	int ret = 0;
 	u64 v;
 
@@ -85,9 +86,6 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg)
 	if (port_pr.argsz < minsz || port_pr.flags)
 		return -EINVAL;
 
-	if (!IS_ALIGNED(port_pr.buffer_size, 4))
-		return -EINVAL;
-
 	/* get fme header region */
 	fme_hdr = dfl_get_feature_ioaddr_by_id(&pdev->dev,
 					       FME_FEATURE_ID_HEADER);
@@ -103,7 +101,13 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg)
 		       port_pr.buffer_size))
 		return -EFAULT;
 
-	buf = vmalloc(port_pr.buffer_size);
+	/*
+	 * align PR buffer per PR bandwidth, as HW ignores the extra padding
+	 * data automatically.
+	 */
+	length = ALIGN(port_pr.buffer_size, 4);
+
+	buf = vmalloc(length);
 	if (!buf)
 		return -ENOMEM;
 
@@ -140,7 +144,7 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg)
 	fpga_image_info_free(region->info);
 
 	info->buf = buf;
-	info->count = port_pr.buffer_size;
+	info->count = length;
 	info->region_id = port_pr.port_id;
 	region->info = info;