Re: [PATCH] firmware: google: Unregister driver_info on failure

[Greg KH <gregkh@linuxfoundation.org>]

On Tue, Oct 15, 2024 at 09:13:44PM +0800, Yuan Can wrote:
> When platform_device_register_full() returns error, the gsmi_init() returns
> without unregister gsmi_driver_info, fix by add missing
> platform_driver_unregister() when platform_device_register_full() failed.
> 
> Fixes: 8942b2d5094b ("gsmi: Add GSMI commands to log S0ix info")
> Signed-off-by: Yuan Can <yuancan@huawei.com>
> ---
>  drivers/firmware/google/gsmi.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/firmware/google/gsmi.c b/drivers/firmware/google/gsmi.c
> index d304913314e4..24e666d5c3d1 100644
> --- a/drivers/firmware/google/gsmi.c
> +++ b/drivers/firmware/google/gsmi.c
> @@ -918,7 +918,8 @@ static __init int gsmi_init(void)
>  	gsmi_dev.pdev = platform_device_register_full(&gsmi_dev_info);
>  	if (IS_ERR(gsmi_dev.pdev)) {
>  		printk(KERN_ERR "gsmi: unable to register platform device\n");
> -		return PTR_ERR(gsmi_dev.pdev);
> +		ret = PTR_ERR(gsmi_dev.pdev);
> +		goto out_unregister;
>  	}
>  
>  	/* SMI access needs to be serialized */
> @@ -1056,10 +1057,11 @@ static __init int gsmi_init(void)
>  	gsmi_buf_free(gsmi_dev.name_buf);
>  	kmem_cache_destroy(gsmi_dev.mem_pool);
>  	platform_device_unregister(gsmi_dev.pdev);
> -	pr_info("gsmi: failed to load: %d\n", ret);
> +out_unregister:
>  #ifdef CONFIG_PM
>  	platform_driver_unregister(&gsmi_driver_info);
>  #endif
> +	pr_info("gsmi: failed to load: %d\n", ret);
>  	return ret;
>  }
>  
> -- 
> 2.17.1
> 

Hi,

This is the friendly patch-bot of Greg Kroah-Hartman.  You have sent him
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to these common problems, but in order to save his sanity (he kept
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