On Mon, Jun 19, 2017 at 08:27:17AM +0200, Manuel Lauss wrote:
> priv->cmd_size is never initialised if the cmd and rsp buffers reside
> at different addresses. Initialise it in the exit path of the function
> when rsp buffer has also been successfully allocated.
>
> Fixes: aa77ea0e43dc ("tpm/tpm_crb: cache cmd_size register value.").
> Signed-off-by: Manuel Lauss <[email protected]>
Thanks.
Reviewed-by: Jarkko Sakkinen <[email protected]>
/Jarkko
> ---
> drivers/char/tpm/tpm_crb.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/char/tpm/tpm_crb.c b/drivers/char/tpm/tpm_crb.c
> index b917b9d5f710..c3989b090c5b 100644
> --- a/drivers/char/tpm/tpm_crb.c
> +++ b/drivers/char/tpm/tpm_crb.c
> @@ -515,11 +515,12 @@ static int crb_map_io(struct acpi_device *device,
> struct crb_priv *priv,
> goto out;
> }
>
> - priv->cmd_size = cmd_size;
> -
> priv->rsp = priv->cmd;
>
> out:
> + if (!ret)
> + priv->cmd_size = cmd_size;
> +
> crb_go_idle(dev, priv);
>
> return ret;
> --
> 2.13.1
>
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