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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 <loic.poulain@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Loic Poulain 2021-01-28 14:47:22 +01:00 committed by Jakub Kicinski
parent 2bca263cda
commit e6ec3ccd4e
1 changed files with 3 additions and 3 deletions
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6
drivers/net/mhi_net.c
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@ -273,9 +273,6 @@ static int mhi_net_probe(struct mhi_device *mhi_dev,
SET_NETDEV_DEV(ndev, &mhi_dev->dev); SET_NETDEV_DEV(ndev, &mhi_dev->dev);
SET_NETDEV_DEVTYPE(ndev, &wwan_type); 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); 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.rx_syncp);
u64_stats_init(&mhi_netdev->stats.tx_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) if (err)
goto out_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); err = register_netdev(ndev);
if (err) if (err)
goto out_err; goto out_err;