Re: [PATCH 3/9] staging: otus: check kmalloc() return value

[walter harms]

Kulikov Vasiliy schrieb:
> kmalloc() may fail, if so return error from zfwUsbSubmitControl().
> 
> Signed-off-by: Kulikov Vasiliy <segooon@xxxxxxxxx>
> ---
>  drivers/staging/otus/wrap_usb.c |    5 +++++
>  1 files changed, 5 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/staging/otus/wrap_usb.c b/drivers/staging/otus/wrap_usb.c
> index 93459ca..9f04047 100644
> --- a/drivers/staging/otus/wrap_usb.c
> +++ b/drivers/staging/otus/wrap_usb.c
> @@ -104,6 +104,11 @@ u32_t zfwUsbSubmitControl(zdev_t *dev, u8_t req, u16_t value, u16_t index,
>  
>  	if (size > 0) {
>  		buf = kmalloc(size, GFP_KERNEL);
> +		if (buf == NULL) {
> +			pr_err("zfwUsbSubmitControl() failed, "
> +				  "kmalloc() returned NULL\n");
> +			return 1;
> +		}
>  		memcpy(buf, (u8_t *)data, size);
>  	} else
>  		buf = NULL;


We had a memdup() somewhere had'nt we ?

re,
 wh
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