From e6ec3ccd4eb2b3b9cf0a4127cf00fae602570a52 Mon Sep 17 00:00:00 2001 From: Loic Poulain Date: Thu, 28 Jan 2021 14:47:22 +0100 Subject: [PATCH] net: mhi: Get RX queue size from MHI core The RX queue size can be determined at runtime by retrieving the number of available transfer descriptors. Signed-off-by: Loic Poulain Signed-off-by: Jakub Kicinski --- drivers/net/mhi_net.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/mhi_net.c b/drivers/net/mhi_net.c index a5a214d29849..abdd2baa312a 100644 --- a/drivers/net/mhi_net.c +++ b/drivers/net/mhi_net.c @@ -273,9 +273,6 @@ static int mhi_net_probe(struct mhi_device *mhi_dev, SET_NETDEV_DEV(ndev, &mhi_dev->dev); SET_NETDEV_DEVTYPE(ndev, &wwan_type); - /* All MHI net channels have 128 ring elements (at least for now) */ - mhi_netdev->rx_queue_sz = 128; - INIT_DELAYED_WORK(&mhi_netdev->rx_refill, mhi_net_rx_refill_work); u64_stats_init(&mhi_netdev->stats.rx_syncp); u64_stats_init(&mhi_netdev->stats.tx_syncp); @@ -285,6 +282,9 @@ static int mhi_net_probe(struct mhi_device *mhi_dev, if (err) goto out_err; + /* Number of transfer descriptors determines size of the queue */ + mhi_netdev->rx_queue_sz = mhi_get_free_desc_count(mhi_dev, DMA_FROM_DEVICE); + err = register_netdev(ndev); if (err) goto out_err; -- 2.11.0