If a maximum receive unit (MRU) size is specified, use it for RX
buffers allocation instead of the MTU.

Signed-off-by: Loic Poulain <loic.poul...@linaro.org>
---
 drivers/net/mhi/mhi.h | 1 +
 drivers/net/mhi/net.c | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/mhi/mhi.h b/drivers/net/mhi/mhi.h
index 12e7407..1d0c499 100644
--- a/drivers/net/mhi/mhi.h
+++ b/drivers/net/mhi/mhi.h
@@ -29,6 +29,7 @@ struct mhi_net_dev {
        struct mhi_net_stats stats;
        u32 rx_queue_sz;
        int msg_enable;
+       unsigned int mru;
 };
 
 struct mhi_net_proto {
diff --git a/drivers/net/mhi/net.c b/drivers/net/mhi/net.c
index b1769fb..4bef7fe 100644
--- a/drivers/net/mhi/net.c
+++ b/drivers/net/mhi/net.c
@@ -270,10 +270,12 @@ static void mhi_net_rx_refill_work(struct work_struct 
*work)
                                                      rx_refill.work);
        struct net_device *ndev = mhi_netdev->ndev;
        struct mhi_device *mdev = mhi_netdev->mdev;
-       int size = READ_ONCE(ndev->mtu);
        struct sk_buff *skb;
+       unsigned int size;
        int err;
 
+       size = mhi_netdev->mru ? mhi_netdev->mru : READ_ONCE(ndev->mtu);
+
        while (!mhi_queue_is_full(mdev, DMA_FROM_DEVICE)) {
                skb = netdev_alloc_skb(ndev, size);
                if (unlikely(!skb))
-- 
2.7.4

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