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wcn36xx: release DMA memory in case of error 

wcn36xx_dxe_init() doesn't check for the return value of
wcn36xx_dxe_init_descs(), release the resources in case an error ocurred.

Signed-off-by: Ramon Fried <rfried@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Ramon Fried 2018-01-23 17:20:13 +02:00 committed by Kalle Valo
parent 3717957ce5
commit d0bb950b9f
1 changed files with 40 additions and 6 deletions
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46
drivers/net/wireless/ath/wcn36xx/dxe.c
View File

@ -236,6 +236,14 @@ static int wcn36xx_dxe_init_descs(struct device *dev, struct wcn36xx_dxe_ch *wcn
return 0;
}
static void wcn36xx_dxe_deinit_descs(struct device *dev, struct wcn36xx_dxe_ch *wcn_ch)
{
size_t size;
size = wcn_ch->desc_num * sizeof(struct wcn36xx_dxe_desc);
dma_free_coherent(dev, size,wcn_ch->cpu_addr, wcn_ch->dma_addr);
}
static void wcn36xx_dxe_init_tx_bd(struct wcn36xx_dxe_ch *ch,
struct wcn36xx_dxe_mem_pool *pool)
{
@ -722,7 +730,11 @@ int wcn36xx_dxe_init(struct wcn36xx *wcn)
/***************************************/
/* Init descriptors for TX LOW channel */
/***************************************/
wcn36xx_dxe_init_descs(wcn->dev, &wcn->dxe_tx_l_ch);
ret = wcn36xx_dxe_init_descs(wcn->dev, &wcn->dxe_tx_l_ch);
if (ret) {
dev_err(wcn->dev, "Error allocating descriptor\n");
return ret;
}
wcn36xx_dxe_init_tx_bd(&wcn->dxe_tx_l_ch, &wcn->data_mem_pool);
/* Write channel head to a NEXT register */
@ -740,7 +752,12 @@ int wcn36xx_dxe_init(struct wcn36xx *wcn)
/***************************************/
/* Init descriptors for TX HIGH channel */
/***************************************/
wcn36xx_dxe_init_descs(wcn->dev, &wcn->dxe_tx_h_ch);
ret = wcn36xx_dxe_init_descs(wcn->dev, &wcn->dxe_tx_h_ch);
if (ret) {
dev_err(wcn->dev, "Error allocating descriptor\n");
goto out_err_txh_ch;
}
wcn36xx_dxe_init_tx_bd(&wcn->dxe_tx_h_ch, &wcn->mgmt_mem_pool);
/* Write channel head to a NEXT register */
@ -760,7 +777,12 @@ int wcn36xx_dxe_init(struct wcn36xx *wcn)
/***************************************/
/* Init descriptors for RX LOW channel */
/***************************************/
wcn36xx_dxe_init_descs(wcn->dev, &wcn->dxe_rx_l_ch);
ret = wcn36xx_dxe_init_descs(wcn->dev, &wcn->dxe_rx_l_ch);
if (ret) {
dev_err(wcn->dev, "Error allocating descriptor\n");
goto out_err_rxl_ch;
}
/* For RX we need to preallocated buffers */
wcn36xx_dxe_ch_alloc_skb(wcn, &wcn->dxe_rx_l_ch);
@ -790,7 +812,11 @@ int wcn36xx_dxe_init(struct wcn36xx *wcn)
/***************************************/
/* Init descriptors for RX HIGH channel */
/***************************************/
wcn36xx_dxe_init_descs(wcn->dev, &wcn->dxe_rx_h_ch);
ret = wcn36xx_dxe_init_descs(wcn->dev, &wcn->dxe_rx_h_ch);
if (ret) {
dev_err(wcn->dev, "Error allocating descriptor\n");
goto out_err_rxh_ch;
}
/* For RX we need to prealocat buffers */
wcn36xx_dxe_ch_alloc_skb(wcn, &wcn->dxe_rx_h_ch);
@ -819,11 +845,19 @@ int wcn36xx_dxe_init(struct wcn36xx *wcn)
ret = wcn36xx_dxe_request_irqs(wcn);
if (ret < 0)
goto out_err;
goto out_err_irq;
return 0;
out_err:
out_err_irq:
wcn36xx_dxe_deinit_descs(wcn->dev, &wcn->dxe_rx_h_ch);
out_err_rxh_ch:
wcn36xx_dxe_deinit_descs(wcn->dev, &wcn->dxe_rx_l_ch);
out_err_rxl_ch:
wcn36xx_dxe_deinit_descs(wcn->dev, &wcn->dxe_tx_h_ch);
out_err_txh_ch:
wcn36xx_dxe_deinit_descs(wcn->dev, &wcn->dxe_tx_l_ch);
return ret;
}