This is a note to let you know that I've just added the patch titled
net: cpsw: disable napi in cpsw_ndo_open()
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-cpsw-disable-napi-in-cpsw_ndo_open.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 1e1adab32319f1001e806c69a176769cddf7e1be
Author: Zhengchao Shao <shaozhengchao@xxxxxxxxxx>
Date: Wed Nov 9 09:15:37 2022 +0800
net: cpsw: disable napi in cpsw_ndo_open()
[ Upstream commit 6d47b53fb3f363a74538a1dbd09954af3d8d4131 ]
When failed to create xdp rxqs or fill rx channels in cpsw_ndo_open() for
opening device, napi isn't disabled. When open cpsw device next time, it
will report a invalid opcode issue. Compiled tested only.
Fixes: d354eb85d618 ("drivers: net: cpsw: dual_emac: simplify napi usage")
Signed-off-by: Zhengchao Shao <shaozhengchao@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221109011537.96975-1-shaozhengchao@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index ed66c4d4d830..613e2c7c950c 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -854,6 +854,8 @@ static int cpsw_ndo_open(struct net_device *ndev)
err_cleanup:
if (!cpsw->usage_count) {
+ napi_disable(&cpsw->napi_rx);
+ napi_disable(&cpsw->napi_tx);
cpdma_ctlr_stop(cpsw->dma);
cpsw_destroy_xdp_rxqs(cpsw);
}
