This patch works for me.
Tested-by: Baoquan He <bhe@xxxxxxxxxx>
Thanks
Baoquan
On 04/10/14 at 05:17pm, scameron@xxxxxxxxxxxxxxxxxx wrote:
>
> Without this, you'll see a null pointer dereference in
> hpsa_enter_performant_mode().
>
> Signed-off-by: Stephen M. Cameron <scameron@xxxxxxxxxxxxxxxxxx>
> ---
> drivers/scsi/hpsa.c | 4 ++++
> 1 files changed, 4 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
> index 8cf4a0c..ef4dfdd 100644
> --- a/drivers/scsi/hpsa.c
> +++ b/drivers/scsi/hpsa.c
> @@ -7463,6 +7463,10 @@ static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
> if (hpsa_simple_mode)
> return;
>
> + trans_support = readl(&(h->cfgtable->TransportSupport));
> + if (!(trans_support & PERFORMANT_MODE))
> + return;
> +
> /* Check for I/O accelerator mode support */
> if (trans_support & CFGTBL_Trans_io_accel1) {
> transMethod |= CFGTBL_Trans_io_accel1 |
> --
> 1.7.1
>
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