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[PATCH 2/3] net: stmmac: Fix error handling path in 'alloc_dma_tx_desc_resources()'

Started byChristophe JAILLET <christophe.jaillet@wanadoo.fr>
First post2017-07-08 10:10 +0200
Last post2017-07-10 08:30 +0200
Articles 2 — 2 participants

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  [PATCH 2/3] net: stmmac: Fix error handling path in 'alloc_dma_tx_desc_resources()' Christophe JAILLET <christophe.jaillet@wanadoo.fr> - 2017-07-08 10:10 +0200
    Re: [PATCH 2/3] net: stmmac: Fix error handling path in  'alloc_dma_tx_desc_resources()' Giuseppe CAVALLARO <peppe.cavallaro@st.com> - 2017-07-10 08:30 +0200

#1683554 — [PATCH 2/3] net: stmmac: Fix error handling path in 'alloc_dma_tx_desc_resources()'

FromChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Date2017-07-08 10:10 +0200
Subject[PATCH 2/3] net: stmmac: Fix error handling path in 'alloc_dma_tx_desc_resources()'
Message-ID<u0SYp-88v-3@gated-at.bofh.it>
If the first 'kmalloc_array' within the loop fails, we should free what
as already been allocated, as done in all other error handling path.

Fixes: ce736788e8a9 ("net: stmmac: adding multiple buffers for TX")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 4322fa4a13e8..07d486a70118 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1561,7 +1561,7 @@ static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv)
 						    sizeof(*tx_q->tx_skbuff_dma),
 						    GFP_KERNEL);
 		if (!tx_q->tx_skbuff_dma)
-			return -ENOMEM;
+			goto err_dma_buffers;
 
 		tx_q->tx_skbuff = kmalloc_array(DMA_TX_SIZE,
 						sizeof(struct sk_buff *),
-- 
2.11.0

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#1683984 — Re: [PATCH 2/3] net: stmmac: Fix error handling path in 'alloc_dma_tx_desc_resources()'

FromGiuseppe CAVALLARO <peppe.cavallaro@st.com>
Date2017-07-10 08:30 +0200
SubjectRe: [PATCH 2/3] net: stmmac: Fix error handling path in 'alloc_dma_tx_desc_resources()'
Message-ID<u1AmJ-1oe-7@gated-at.bofh.it>
In reply to#1683554
On 7/8/2017 9:46 AM, Christophe JAILLET wrote:
> If the first 'kmalloc_array' within the loop fails, we should free what
> as already been allocated, as done in all other error handling path.
>
> Fixes: ce736788e8a9 ("net: stmmac: adding multiple buffers for TX")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
> ---
>   drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index 4322fa4a13e8..07d486a70118 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -1561,7 +1561,7 @@ static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv)
>   						    sizeof(*tx_q->tx_skbuff_dma),
>   						    GFP_KERNEL);
>   		if (!tx_q->tx_skbuff_dma)
> -			return -ENOMEM;
> +			goto err_dma_buffers;
>   
>   		tx_q->tx_skbuff = kmalloc_array(DMA_TX_SIZE,
>   						sizeof(struct sk_buff *),

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