net: ethernet: mtk_wed: check update_wo_rx_stats in mtk_wed_update_rx_stats()

Check if update_wo_rx_stats function pointer is properly set in
mtk_wed_update_rx_stats routine before accessing it.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/b0d233386e059bccb59f18f69afb79a7806e5ded.1694507226.git.lorenzo@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/drivers/net/ethernet/mediatek/mtk_wed_mcu.c b/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
index 071ed3dea860d5b4852c451cf00d5ed145bb7bb0..72bcdaed12a949514443162687a2f81f8566ea0e 100644 (file)
--- a/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
+++ b/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
@@ -68,6 +68,9 @@ mtk_wed_update_rx_stats(struct mtk_wed_device *wed, struct sk_buff *skb)
        struct mtk_wed_wo_rx_stats *stats;
        int i;
 
+       if (!wed->wlan.update_wo_rx_stats)
+               return;
+
        if (count * sizeof(*stats) > skb->len - sizeof(u32))
                return;