linux-kernel - Re: [PATCH -next] tpm: ibmvtpm: Correct the return value in tpm_ibmvtpm

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Date:   Fri, 18 Mar 2022 09:54:46 -0400
From:   Stefan Berger <stefanb@...ux.ibm.com>
To:     Xiu Jianfeng <xiujianfeng@...wei.com>, mpe@...erman.id.au,
        benh@...nel.crashing.org, paulus@...ba.org, peterhuewe@....de,
        jarkko@...nel.org, jgg@...pe.ca, nayna@...ux.ibm.com
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-integrity@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] tpm: ibmvtpm: Correct the return value in
 tpm_ibmvtpm_probe()



On 3/18/22 02:02, 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@...wei.com>

Reviewed-by: Stefan Berger <stefanb@...ux.ibm.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;
>   	}