linux-kernel - Re: [PATCH] tpm_tis: fix missing platform_driver

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Date:	Thu, 2 May 2013 08:43:45 -0500
From:	Kent Yoder <key@...ux.vnet.ibm.com>
To:	Libo Chen <clbchenlibo.chen@...wei.com>
Cc:	mail@...jiv.net, tpmdd@...horst.net, tpmdd@...rix.com,
	tpmdd-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	Li Zefan <lizefan@...wei.com>
Subject: Re: [PATCH] tpm_tis: fix missing platform_driver_unregister

On Thu, May 02, 2013 at 07:39:50PM +0800, Libo Chen wrote:
> 
> Add missing unregister tis_drv after register pdev fail
> 
> Signed-off-by: Libo Chen <libo.chen@...wei.com>

  Hi Libo - thanks for the contribution, but I got an similar patch
last week from Wei Yongjun. Its staged over here [1] and will be pushed
soon.

Thanks,
Kent

[1] git://github.com/shpedoikal/linux.git tpmdd-04-26-13

> ---
>  drivers/char/tpm/tpm_tis.c |    7 +++++--
>  1 files changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
> index 8a41b6b..d5b0af4 100644
> --- a/drivers/char/tpm/tpm_tis.c
> +++ b/drivers/char/tpm/tpm_tis.c
> @@ -884,8 +884,11 @@ static int __init init_tis(void)
>  	rc = platform_driver_register(&tis_drv);
>  	if (rc < 0)
>  		return rc;
> -	if (IS_ERR(pdev=platform_device_register_simple("tpm_tis", -1, NULL, 0)))
> -		return PTR_ERR(pdev);
> +	pdev = platform_device_register_simple("tpm_tis", -1, NULL, 0);
> +	if (IS_ERR(pdev) {
> +	    platform_driver_unregister(&tis_drv);
> +	    return PTR_ERR(pdev);
> +	}
>  	if((rc=tpm_tis_init(&pdev->dev, TIS_MEM_BASE, TIS_MEM_LEN, 0)) != 0) {
>  		platform_device_unregister(pdev);
>  		platform_driver_unregister(&tis_drv);
> -- 
> 1.7.1
> 

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