* [PATCH 1/2] wan/fsl_ucc_hdlc: remove reduplicative freed memory 'uhdlc_priv'
@ 2016-07-15 2:38 Zhao Qiang
2016-07-15 2:38 ` [PATCH 2/2] wan/fsl_ucc_hdlc: rewrite error handling to make it clearer Zhao Qiang
2016-07-17 3:22 ` [PATCH 1/2] wan/fsl_ucc_hdlc: remove reduplicative freed memory 'uhdlc_priv' David Miller
0 siblings, 2 replies; 4+ messages in thread
From: Zhao Qiang @ 2016-07-15 2:38 UTC (permalink / raw)
To: davem, dan.carpenter; +Cc: netdev, linux-kernel, xiaobo.xie, Zhao Qiang
'uhdlc_priv' has freed twice, drop the first one.
Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
---
drivers/net/wan/fsl_ucc_hdlc.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c
index 19174ac..e2b225d 100644
--- a/drivers/net/wan/fsl_ucc_hdlc.c
+++ b/drivers/net/wan/fsl_ucc_hdlc.c
@@ -1127,7 +1127,6 @@ static int ucc_hdlc_probe(struct platform_device *pdev)
err_hdlc_init:
err_miss_tsa_property:
- kfree(uhdlc_priv);
if (uhdlc_priv->tsa)
kfree(utdm);
err_alloc_utdm:
--
2.1.0.27.g96db324
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH 2/2] wan/fsl_ucc_hdlc: rewrite error handling to make it clearer
2016-07-15 2:38 [PATCH 1/2] wan/fsl_ucc_hdlc: remove reduplicative freed memory 'uhdlc_priv' Zhao Qiang
@ 2016-07-15 2:38 ` Zhao Qiang
2016-07-17 3:22 ` David Miller
2016-07-17 3:22 ` [PATCH 1/2] wan/fsl_ucc_hdlc: remove reduplicative freed memory 'uhdlc_priv' David Miller
1 sibling, 1 reply; 4+ messages in thread
From: Zhao Qiang @ 2016-07-15 2:38 UTC (permalink / raw)
To: davem, dan.carpenter; +Cc: netdev, linux-kernel, xiaobo.xie, Zhao Qiang
It was used err_xxx for labeled statement, it is
not easy to understand, now use free_xxx for labeled
statement.
Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
---
drivers/net/wan/fsl_ucc_hdlc.c | 55 +++++++++++++++++++++---------------------
1 file changed, 27 insertions(+), 28 deletions(-)
diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c
index e2b225d..9309c72 100644
--- a/drivers/net/wan/fsl_ucc_hdlc.c
+++ b/drivers/net/wan/fsl_ucc_hdlc.c
@@ -143,7 +143,7 @@ static int uhdlc_init(struct ucc_hdlc_private *priv)
if (!priv->rx_bd_base) {
dev_err(priv->dev, "Cannot allocate MURAM memory for RxBDs\n");
ret = -ENOMEM;
- goto rxbd_alloc_error;
+ goto free_uccf;
}
/* Alloc Tx BD */
@@ -154,7 +154,7 @@ static int uhdlc_init(struct ucc_hdlc_private *priv)
if (!priv->tx_bd_base) {
dev_err(priv->dev, "Cannot allocate MURAM memory for TxBDs\n");
ret = -ENOMEM;
- goto txbd_alloc_error;
+ goto free_rx_bd;
}
/* Alloc parameter ram for ucc hdlc */
@@ -164,18 +164,18 @@ static int uhdlc_init(struct ucc_hdlc_private *priv)
if (priv->ucc_pram_offset < 0) {
dev_err(priv->dev, "Can not allocate MURAM for hdlc prameter.\n");
ret = -ENOMEM;
- goto pram_alloc_error;
+ goto free_tx_bd;
}
priv->rx_skbuff = kzalloc(priv->rx_ring_size * sizeof(*priv->rx_skbuff),
GFP_KERNEL);
if (!priv->rx_skbuff)
- goto rx_skb_alloc_error;
+ goto free_ucc_pram;
priv->tx_skbuff = kzalloc(priv->tx_ring_size * sizeof(*priv->tx_skbuff),
GFP_KERNEL);
if (!priv->tx_skbuff)
- goto tx_skb_alloc_error;
+ goto free_rx_skbuff;
priv->skb_curtx = 0;
priv->skb_dirtytx = 0;
@@ -200,14 +200,14 @@ static int uhdlc_init(struct ucc_hdlc_private *priv)
if (riptr < 0) {
dev_err(priv->dev, "Cannot allocate MURAM mem for Receive internal temp data pointer\n");
ret = -ENOMEM;
- goto riptr_alloc_error;
+ goto free_tx_skbuff;
}
tiptr = qe_muram_alloc(32, 32);
if (tiptr < 0) {
dev_err(priv->dev, "Cannot allocate MURAM mem for Transmit internal temp data pointer\n");
ret = -ENOMEM;
- goto tiptr_alloc_error;
+ goto free_riptr;
}
/* Set RIPTR, TIPTR */
@@ -247,7 +247,7 @@ static int uhdlc_init(struct ucc_hdlc_private *priv)
if (!bd_buffer) {
dev_err(priv->dev, "Could not allocate buffer descriptors\n");
ret = -ENOMEM;
- goto bd_alloc_error;
+ goto free_tiptr;
}
memset(bd_buffer, 0, (RX_BD_RING_LEN + TX_BD_RING_LEN)
@@ -283,25 +283,25 @@ static int uhdlc_init(struct ucc_hdlc_private *priv)
return 0;
-bd_alloc_error:
+free_tiptr:
qe_muram_free(tiptr);
-tiptr_alloc_error:
+free_riptr:
qe_muram_free(riptr);
-riptr_alloc_error:
+free_tx_skbuff:
kfree(priv->tx_skbuff);
-tx_skb_alloc_error:
+free_rx_skbuff:
kfree(priv->rx_skbuff);
-rx_skb_alloc_error:
+free_ucc_pram:
qe_muram_free(priv->ucc_pram_offset);
-pram_alloc_error:
+free_tx_bd:
dma_free_coherent(priv->dev,
TX_BD_RING_LEN * sizeof(struct qe_bd),
priv->tx_bd_base, priv->dma_tx_bd);
-txbd_alloc_error:
+free_rx_bd:
dma_free_coherent(priv->dev,
RX_BD_RING_LEN * sizeof(struct qe_bd),
priv->rx_bd_base, priv->dma_rx_bd);
-rxbd_alloc_error:
+free_uccf:
ucc_fast_free(priv->uccf);
return ret;
@@ -1068,9 +1068,7 @@ static int ucc_hdlc_probe(struct platform_device *pdev)
uhdlc_priv = kzalloc(sizeof(*uhdlc_priv), GFP_KERNEL);
if (!uhdlc_priv) {
- ret = -ENOMEM;
- dev_err(&pdev->dev, "No mem to alloc hdlc private data\n");
- goto err_alloc_priv;
+ return -ENOMEM;
}
dev_set_drvdata(&pdev->dev, uhdlc_priv);
@@ -1088,25 +1086,25 @@ static int ucc_hdlc_probe(struct platform_device *pdev)
if (!utdm) {
ret = -ENOMEM;
dev_err(&pdev->dev, "No mem to alloc ucc tdm data\n");
- goto err_alloc_utdm;
+ goto free_uhdlc_priv;
}
uhdlc_priv->utdm = utdm;
ret = ucc_of_parse_tdm(np, utdm, ut_info);
if (ret)
- goto err_miss_tsa_property;
+ goto free_utdm;
}
ret = uhdlc_init(uhdlc_priv);
if (ret) {
dev_err(&pdev->dev, "Failed to init uhdlc\n");
- goto err_hdlc_init;
+ goto free_utdm;
}
dev = alloc_hdlcdev(uhdlc_priv);
if (!dev) {
ret = -ENOMEM;
pr_err("ucc_hdlc: unable to allocate memory\n");
- goto err_hdlc_init;
+ goto undo_uhdlc_init;
}
uhdlc_priv->ndev = dev;
@@ -1120,18 +1118,19 @@ static int ucc_hdlc_probe(struct platform_device *pdev)
ret = -ENOBUFS;
pr_err("ucc_hdlc: unable to register hdlc device\n");
free_netdev(dev);
- goto err_hdlc_init;
+ goto free_dev;
}
return 0;
-err_hdlc_init:
-err_miss_tsa_property:
+free_dev:
+ free_netdev(dev);
+undo_uhdlc_init:
+free_utdm:
if (uhdlc_priv->tsa)
kfree(utdm);
-err_alloc_utdm:
+free_uhdlc_priv:
kfree(uhdlc_priv);
-err_alloc_priv:
return ret;
}
--
2.1.0.27.g96db324
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH 1/2] wan/fsl_ucc_hdlc: remove reduplicative freed memory 'uhdlc_priv'
2016-07-15 2:38 [PATCH 1/2] wan/fsl_ucc_hdlc: remove reduplicative freed memory 'uhdlc_priv' Zhao Qiang
2016-07-15 2:38 ` [PATCH 2/2] wan/fsl_ucc_hdlc: rewrite error handling to make it clearer Zhao Qiang
@ 2016-07-17 3:22 ` David Miller
1 sibling, 0 replies; 4+ messages in thread
From: David Miller @ 2016-07-17 3:22 UTC (permalink / raw)
To: qiang.zhao; +Cc: dan.carpenter, netdev, linux-kernel, xiaobo.xie
From: Zhao Qiang <qiang.zhao@nxp.com>
Date: Fri, 15 Jul 2016 10:38:24 +0800
> 'uhdlc_priv' has freed twice, drop the first one.
>
> Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
Applied.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 2/2] wan/fsl_ucc_hdlc: rewrite error handling to make it clearer
2016-07-15 2:38 ` [PATCH 2/2] wan/fsl_ucc_hdlc: rewrite error handling to make it clearer Zhao Qiang
@ 2016-07-17 3:22 ` David Miller
0 siblings, 0 replies; 4+ messages in thread
From: David Miller @ 2016-07-17 3:22 UTC (permalink / raw)
To: qiang.zhao; +Cc: dan.carpenter, netdev, linux-kernel, xiaobo.xie
From: Zhao Qiang <qiang.zhao@nxp.com>
Date: Fri, 15 Jul 2016 10:38:25 +0800
> It was used err_xxx for labeled statement, it is
> not easy to understand, now use free_xxx for labeled
> statement.
>
> Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
Applied.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2016-07-17 3:22 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-07-15 2:38 [PATCH 1/2] wan/fsl_ucc_hdlc: remove reduplicative freed memory 'uhdlc_priv' Zhao Qiang
2016-07-15 2:38 ` [PATCH 2/2] wan/fsl_ucc_hdlc: rewrite error handling to make it clearer Zhao Qiang
2016-07-17 3:22 ` David Miller
2016-07-17 3:22 ` [PATCH 1/2] wan/fsl_ucc_hdlc: remove reduplicative freed memory 'uhdlc_priv' David Miller
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