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net: mtk_eth_soc: hold instance lock around DMA-device-swap close

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netif_close_many will soon assert ops lock (for locked DOWN/GOING_DOWN).
Update mtk_eth_set_dma_device to manually grab and release the ops lock.

Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20260702224150.3730033-4-sdf@fomichev.me
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Stanislav Fomichev 2026-07-02 15:41:47 -07:00 committed by Paolo Abeni
parent cefa18fab2
commit 6034bc4feb
1 changed files with 5 additions and 0 deletions
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5
drivers/net/ethernet/mediatek/mtk_eth_soc.c
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@ -26,6 +26,7 @@
#include <linux/bitfield.h>
#include <net/dsa.h>
#include <net/dst_metadata.h>
#include <net/netdev_lock.h>
#include <net/page_pool/helpers.h>
#include <linux/genalloc.h>
@ -5030,10 +5031,14 @@ void mtk_eth_set_dma_device(struct mtk_eth *eth, struct device *dma_dev)
continue;
list_add_tail(&dev->close_list, &dev_list);
netdev_lock_ops(dev);
}
netif_close_many(&dev_list, false);
list_for_each_entry(dev, &dev_list, close_list)
netdev_unlock_ops(dev);
eth->dma_dev = dma_dev;
list_for_each_entry_safe(dev, tmp, &dev_list, close_list) {