From 646f8f39afd74f87282bb4afade5014dff244aa1 Mon Sep 17 00:00:00 2001
From: huangFF0904 <625173hhh@gmail.com>
Date: Sat, 20 Dec 2025 17:55:12 +0800
Subject: [PATCH] media: tw5864: Fix possible NULL pointer dereference in
 tw5864_handle_frame

---
 drivers/media/pci/tw5864/tw5864-video.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/media/pci/tw5864/tw5864-video.c b/drivers/media/pci/tw5864/tw5864-video.c
index 023ff9ebde5e..4f1291cd4bbc 100644
--- a/drivers/media/pci/tw5864/tw5864-video.c
+++ b/drivers/media/pci/tw5864/tw5864-video.c
@@ -1397,7 +1397,6 @@ static void tw5864_handle_frame(struct tw5864_h264_frame *frame)
 		return;
 	}
 
-	v4l2_buf = to_vb2_v4l2_buffer(&vb->vb.vb2_buf);
 
 	/*
 	 * Check for space.
@@ -1410,6 +1409,8 @@ static void tw5864_handle_frame(struct tw5864_h264_frame *frame)
 		return;
 	}
 
+	v4l2_buf = to_vb2_v4l2_buffer(&vb->vb.vb2_buf);
+
 	for (i = 0; i < 8 - input->tail_nb_bits; i++)
 		vlc_mask |= 1 << i;
 	tail_mask = (~vlc_mask) & 0xff;