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realtek: eth: Add return value to rteth_setup_ring_buffer()

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In the future this function will work on page_pool and might fail.
Add a return code to it and handle it where needed.

Link: https://github.com/openwrt/openwrt/pull/23483
Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
This commit is contained in:
Markus Stockhausen 2026-05-24 09:59:39 +02:00
parent 0a80500fb0
commit 8508bcb42e
1 changed files with 8 additions and 2 deletions
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10
target/linux/realtek/files-6.18/drivers/net/ethernet/rtl838x_eth.c
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@ -603,7 +603,7 @@ static void rteth_931x_hw_en_rxtx(struct rteth_ctrl *ctrl)
regmap_write(ctrl->map, ctrl->r->mac_force_mode_ctrl, 0x2a1d);
}
static void rteth_setup_ring_buffer(struct rteth_ctrl *ctrl)
static int rteth_setup_ring_buffer(struct rteth_ctrl *ctrl)
{
dma_addr_t rx_buf_dma = ctrl->rx_buf_dma;
char *rx_buf = ctrl->rx_buf;
@ -638,6 +638,8 @@ static void rteth_setup_ring_buffer(struct rteth_ctrl *ctrl)
ctrl->tx_data[r].ring[RTETH_TX_RING_SIZE - 1] |= WRAP;
ctrl->tx_data[r].slot = 0;
}
return 0;
}
static void rteth_839x_setup_notify_ring_buffer(struct rteth_ctrl *ctrl)
@ -701,6 +703,7 @@ static void rteth_931x_hw_init(struct rteth_ctrl *ctrl)
static int rteth_open(struct net_device *dev)
{
struct rteth_ctrl *ctrl = netdev_priv(dev);
int ret;
pr_debug("%s called: RX rings %d(length %d), TX rings %d(length %d)\n",
__func__, RTETH_RX_RINGS, RTETH_RX_RING_SIZE, RTETH_TX_RINGS, RTETH_TX_RING_SIZE);
@ -708,7 +711,10 @@ static int rteth_open(struct net_device *dev)
scoped_guard(spinlock_irqsave, &ctrl->lock) {
ctrl->r->hw_reset(ctrl);
rteth_setup_cpu_rx_rings(ctrl);
rteth_setup_ring_buffer(ctrl);
ret = rteth_setup_ring_buffer(ctrl);
if (ret)
return ret;
if (ctrl->r->setup_notify_ring_buffer)
ctrl->r->setup_notify_ring_buffer(ctrl);