[PATCH net-next v2] net: ethernet: mtk_eth_soc: add missing check for rhashtable_init

From: Chen Ni
Date: Thu May 16 2024 - 22:51:31 EST


Add check for the return value of rhashtable_init() and return the error
if it fails in order to catch the error.

Fixes: 33fc42de3327 ("net: ethernet: mtk_eth_soc: support creating mac address based offload entries")
Signed-off-by: Chen Ni <nichen@xxxxxxxxxxx>
---
Changelog:

v1 -> v2:

1. Rewrite the error handling.
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +-
drivers/net/ethernet/mediatek/mtk_ppe.c | 5 ++++-
2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index cae46290a7ae..f9b8956a8726 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -4957,7 +4957,7 @@ static int mtk_probe(struct platform_device *pdev)

eth->ppe[i] = mtk_ppe_init(eth, eth->base + ppe_addr, i);

- if (!eth->ppe[i]) {
+ if (IS_ERR_OR_NULL(eth->ppe[i])) {
err = -ENOMEM;
goto err_deinit_ppe;
}
diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.c b/drivers/net/ethernet/mediatek/mtk_ppe.c
index 0acee405a749..4895c6febaf8 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
@@ -884,12 +884,15 @@ struct mtk_ppe *mtk_ppe_init(struct mtk_eth *eth, void __iomem *base, int index)
struct mtk_ppe *ppe;
u32 foe_flow_size;
void *foe;
+ int ret;

ppe = devm_kzalloc(dev, sizeof(*ppe), GFP_KERNEL);
if (!ppe)
return NULL;

- rhashtable_init(&ppe->l2_flows, &mtk_flow_l2_ht_params);
+ ret = rhashtable_init(&ppe->l2_flows, &mtk_flow_l2_ht_params);
+ if (ret)
+ return ERR_PTR(ret);

/* need to allocate a separate device, since it PPE DMA access is
* not coherent.
--
2.25.1