Re: [PATCH] [SCSI] pm8001: Add error handler in pm8001_init_sas_add() if kzalloc fails.

["Jack Wang" <jack_wang@xxxxxxxxx>]

Based on all comment from others, I ACK this patch.
Thanks.

Acked-by: Jack Wang <jack_wang@xxxxxxxxx>

> 
> From: Santosh Nayak <santoshprasadnayak@xxxxxxxxx>
> 
> We need to add error handler if kzalloc fails to allocate and initialize.
> Otherwise it may lead to Null derefernce error in
> 'pm8001_chip_get_nvmd_req()'.
> 
> Signed-off-by: Santosh Nayak <santoshprasadnayak@xxxxxxxxx>
> ---
>  drivers/scsi/pm8001/pm8001_init.c |    4 ++++
>  1 files changed, 4 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/scsi/pm8001/pm8001_init.c
> b/drivers/scsi/pm8001/pm8001_init.c
> index 36efaa7..fdce28e 100644
> --- a/drivers/scsi/pm8001/pm8001_init.c
> +++ b/drivers/scsi/pm8001/pm8001_init.c
> @@ -519,6 +519,10 @@ static void pm8001_init_sas_add(struct
pm8001_hba_info
> *pm8001_ha)
>  	payload.minor_function = 0;
>  	payload.length = 128;
>  	payload.func_specific = kzalloc(128, GFP_KERNEL);
> +	if (unlikely(!payload.func_specific)) {
> +		printk(KERN_ERR "%s: failed to alloc memory\n", __func__);
> +		return;
> +	}
>  	PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload);
>  	wait_for_completion(&completion);
>  	for (i = 0; i < pm8001_ha->chip->n_phy; i++) {
> --
> 1.7.4.4
> 
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