[PATCH] staging: Check for Null return of fw_download_code

[Nick Krause]

On Wed, Aug 13, 2014 at 3:54 PM, Nicholas Krause <xerofoify at gmail.com> wrote:
> This patch fixes the bug , https://bugzilla.kernel.org/show_bug.cgi?id=60461
> on the kernel bugzilla. Further more I am checking if we are allocating a
> NULL skb and if so make rt_status to false and free the quene we are using
> for allocated skbs in the while/do loop with skb_quene_purge.
>
> Signed-off-by: Nicholas Krause <xerofoify at gmail.com>
> ---
>  drivers/staging/rtl8192e/rtl8192e/r8192E_firmware.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/drivers/staging/rtl8192e/rtl8192e/r8192E_firmware.c b/drivers/staging/rtl8192e/rtl8192e/r8192E_firmware.c
> index 1a95d1f..0f18c6d 100644
> --- a/drivers/staging/rtl8192e/rtl8192e/r8192E_firmware.c
> +++ b/drivers/staging/rtl8192e/rtl8192e/r8192E_firmware.c
> @@ -61,6 +61,11 @@ static bool fw_download_code(struct net_device *dev, u8 *code_virtual_address,
>                 }
>
>                 skb  = dev_alloc_skb(frag_length + 4);
> +               if (skb == NULL ) {
> +                       rt_status = false;
> +                       skb_queue_purge(&priv->rtllib->skb_waitQ[TXCMD_QUEUE]);
> +                       break;
> +               }
>                 memcpy((unsigned char *)(skb->cb), &dev, sizeof(dev));
>                 tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE);
>                 tcb_desc->queue_index = TXCMD_QUEUE;
> --
> 1.9.1
>
If there are any other errors with this patch, please let me known. I
checked again and there are no warnings or build errors.
Sorry to Valdis about the stupid questions.
Nick