diff mbox series

[net-next,2/3] net: mhi: Get RX queue size from MHI core

Message ID 1610388462-16322-2-git-send-email-loic.poulain@linaro.org (mailing list archive)
State Deferred
Delegated to: Netdev Maintainers
Headers show
Series [net-next,1/3] bus: mhi: core: Add helper API to return number of free TREs | expand

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Context Check Description
netdev/cover_letter warning Series does not have a cover letter
netdev/fixes_present success Link
netdev/patch_count success Link
netdev/tree_selection success Clearly marked for net-next
netdev/subject_prefix success Link
netdev/cc_maintainers success CCed 3 of 3 maintainers
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Link
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success Link
netdev/checkpatch warning WARNING: line length of 84 exceeds 80 columns
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/header_inline success Link
netdev/stable success Stable not CCed

Commit Message

Loic Poulain Jan. 11, 2021, 6:07 p.m. UTC
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>
---
 drivers/net/mhi_net.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/mhi_net.c b/drivers/net/mhi_net.c
index b7f7f2e..3da820b 100644
--- a/drivers/net/mhi_net.c
+++ b/drivers/net/mhi_net.c
@@ -257,9 +257,6 @@  static int mhi_net_probe(struct mhi_device *mhi_dev,
 	mhi_netdev->mdev = mhi_dev;
 	SET_NETDEV_DEV(ndev, &mhi_dev->dev);
 
-	/* 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);
@@ -269,6 +266,9 @@  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;