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authorLoic Poulain <loic.poulain@linaro.org>2021-01-28 14:47:22 +0100
committerJakub Kicinski <kuba@kernel.org>2021-01-29 19:41:59 -0800
commite6ec3ccd4eb2b3b9cf0a4127cf00fae602570a52 (patch)
tree99906a26a1e57639390b5f9cf9a44be4ed3f5962 /drivers/net/mhi_net.c
parent2bca263cdab1a3e0fce54bc2bdf1885c0cfe3195 (diff)
downloadlwn-e6ec3ccd4eb2b3b9cf0a4127cf00fae602570a52.tar.gz
lwn-e6ec3ccd4eb2b3b9cf0a4127cf00fae602570a52.zip
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>
Diffstat (limited to 'drivers/net/mhi_net.c')
-rw-r--r--drivers/net/mhi_net.c6
1 files 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;