Re: [PATCH] staging: rtl8712: Free memory and return failure when kmalloc fails

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Hi Larry, Greg,

On Thu, Oct 20, 2016 at 12:29 PM, Souptick Joarder <jrdr.linux@xxxxxxxxx> wrote:
> This patch is added to free memory and return failure when kmalloc fails
>
> Signed-off-by: Souptick joarder <jrdr.linux@xxxxxxxxx>
> ---
>  drivers/staging/rtl8712/os_intfs.c     | 3 ++-
>  drivers/staging/rtl8712/rtl871x_cmd.c  | 5 ++++-
>  drivers/staging/rtl8712/rtl871x_xmit.c | 5 ++++-
>  3 files changed, 10 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/staging/rtl8712/os_intfs.c b/drivers/staging/rtl8712/os_intfs.c
> index cbe4de0..aab3141 100644
> --- a/drivers/staging/rtl8712/os_intfs.c
> +++ b/drivers/staging/rtl8712/os_intfs.c
> @@ -313,7 +313,8 @@ u8 r8712_init_drv_sw(struct _adapter *padapter)
>                 return _FAIL;
>         if (r8712_init_mlme_priv(padapter) == _FAIL)
>                 return _FAIL;
> -       _r8712_init_xmit_priv(&padapter->xmitpriv, padapter);
> +       if ((_r8712_init_xmit_priv(&padapter->xmitpriv, padapter)) != _SUCCESS)
> +               return _FAIL;
>         _r8712_init_recv_priv(&padapter->recvpriv, padapter);
>         memset((unsigned char *)&padapter->securitypriv, 0,
>                sizeof(struct security_priv));
> diff --git a/drivers/staging/rtl8712/rtl871x_cmd.c b/drivers/staging/rtl8712/rtl871x_cmd.c
> index b7ee5e6..04638f1 100644
> --- a/drivers/staging/rtl8712/rtl871x_cmd.c
> +++ b/drivers/staging/rtl8712/rtl871x_cmd.c
> @@ -72,8 +72,11 @@ static sint _init_cmd_priv(struct cmd_priv *pcmdpriv)
>                             ((addr_t)(pcmdpriv->cmd_allocated_buf) &
>                             (CMDBUFF_ALIGN_SZ - 1));
>         pcmdpriv->rsp_allocated_buf = kmalloc(MAX_RSPSZ + 4, GFP_ATOMIC);
> -       if (!pcmdpriv->rsp_allocated_buf)
> +       if (!pcmdpriv->rsp_allocated_buf) {
> +               kfree(pcmdpriv->cmd_allocated_buf);
> +               pcmdpriv->cmd_allocated_buf = NULL;
>                 return _FAIL;
> +       }
>         pcmdpriv->rsp_buf = pcmdpriv->rsp_allocated_buf  +  4 -
>                             ((addr_t)(pcmdpriv->rsp_allocated_buf) & 3);
>         pcmdpriv->cmd_issued_cnt = 0;
> diff --git a/drivers/staging/rtl8712/rtl871x_xmit.c b/drivers/staging/rtl8712/rtl871x_xmit.c
> index be38364..484d2f2 100644
> --- a/drivers/staging/rtl8712/rtl871x_xmit.c
> +++ b/drivers/staging/rtl8712/rtl871x_xmit.c
> @@ -128,8 +128,11 @@ sint _r8712_init_xmit_priv(struct xmit_priv *pxmitpriv,
>         _init_queue(&pxmitpriv->pending_xmitbuf_queue);
>         pxmitpriv->pallocated_xmitbuf = kmalloc(NR_XMITBUFF * sizeof(struct xmit_buf) + 4,
>                                                 GFP_ATOMIC);
> -       if (!pxmitpriv->pallocated_xmitbuf)
> +       if (!pxmitpriv->pallocated_xmitbuf) {
> +               kfree(pxmitpriv->pallocated_frame_buf);
> +               pxmitpriv->pallocated_frame_buf = NULL;
>                 return _FAIL;
> +       }
>         pxmitpriv->pxmitbuf = pxmitpriv->pallocated_xmitbuf + 4 -
>                               ((addr_t)(pxmitpriv->pallocated_xmitbuf) & 3);
>         pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
> --

Any Comment for this patch ?
> 1.9.1
>

Regards
Souptick
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