Re: [PATCH -next] tpm: ibmvtpm: Correct the return value in tpm_ibmvtpm_probe()

[Jarkko Sakkinen <jarkko@kernel.org>]

On Fri, Mar 18, 2022 at 02:02:01PM +0800, Xiu Jianfeng wrote:
> Currently it returns zero when CRQ response timed out, it should return
> an error code instead.
> 
> Fixes: d8d74ea3c002 ("tpm: ibmvtpm: Wait for buffer to be set before proceeding")
> Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
> ---
>  drivers/char/tpm/tpm_ibmvtpm.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/char/tpm/tpm_ibmvtpm.c b/drivers/char/tpm/tpm_ibmvtpm.c
> index 3af4c07a9342..d3989b257f42 100644
> --- a/drivers/char/tpm/tpm_ibmvtpm.c
> +++ b/drivers/char/tpm/tpm_ibmvtpm.c
> @@ -681,6 +681,7 @@ static int tpm_ibmvtpm_probe(struct vio_dev *vio_dev,
>  	if (!wait_event_timeout(ibmvtpm->crq_queue.wq,
>  				ibmvtpm->rtce_buf != NULL,
>  				HZ)) {
> +		rc = -ENODEV;
>  		dev_err(dev, "CRQ response timed out\n");
>  		goto init_irq_cleanup;
>  	}
> -- 
> 2.17.1
> 

Acked-by: Jarkko Sakkinen <jarkko@kernel.org>

This will require reviewed by from someone who knows this driver
better.

BR, Jarkko