| Message ID | 20240516092427.3897322-1-nichen@iscas.ac.cn (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [net-next] net: ethernet: mtk_eth_soc: add missing check for rhashtable_init | expand |
> 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@iscas.ac.cn> > --- > drivers/net/ethernet/mediatek/mtk_ppe.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.c > b/drivers/net/ethernet/mediatek/mtk_ppe.c > index 0acee405a749..f7e5e6e52cdf 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 NULL; Instead of returning NULL, return actual error ERR_PTR(ret) and use IS_ERR_OR_NULL API to validate the error Thanks, Hariprasad k > > /* need to allocate a separate device, since it PPE DMA access is > * not coherent. > -- > 2.25.1 >
Il 16/05/24 11:24, Chen Ni ha scritto: > 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@iscas.ac.cn> > --- > drivers/net/ethernet/mediatek/mtk_ppe.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.c b/drivers/net/ethernet/mediatek/mtk_ppe.c > index 0acee405a749..f7e5e6e52cdf 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 NULL; return PTR_ERR(ret); ..then in mtk_eth_soc.c, you will have to fix the check: if (!eth->ppe[i]) { to IS_ERR_OR_NULL( ... ) Cheers, Angelo > > /* need to allocate a separate device, since it PPE DMA access is > * not coherent.
diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.c b/drivers/net/ethernet/mediatek/mtk_ppe.c index 0acee405a749..f7e5e6e52cdf 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 NULL; /* need to allocate a separate device, since it PPE DMA access is * not coherent.
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@iscas.ac.cn> --- drivers/net/ethernet/mediatek/mtk_ppe.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)