linux-kernel - Re: [PATCH] iBluetooth: hci_intel: Add check for platform_driver

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Date:   Thu, 2 Jun 2022 17:40:34 +0200
From:   Marcel Holtmann <marcel@...tmann.org>
To:     Jiasheng Jiang <jiasheng@...as.ac.cn>
Cc:     Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iBluetooth: hci_intel: Add check for
 platform_driver_register

Hi Jiasheng,

> As platform_driver_register() could fail, it should be better
> to deal with the return value in order to maintain the code
> consisitency.
> 
> Fixes: 1ab1f239bf17 ("Bluetooth: hci_intel: Add support for platform driver")
> Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
> ---
> drivers/bluetooth/hci_intel.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/bluetooth/hci_intel.c b/drivers/bluetooth/hci_intel.c
> index 7249b91d9b91..d4801b26cc8e 100644
> --- a/drivers/bluetooth/hci_intel.c
> +++ b/drivers/bluetooth/hci_intel.c
> @@ -1217,7 +1217,11 @@ static struct platform_driver intel_driver = {
> 
> int __init intel_init(void)
> {
> -	platform_driver_register(&intel_driver);
> +	int ret;
> +
> +	ret = platform_driver_register(&intel_driver);
> +	if (ret)
> +		return ret;

most of the driver uses int err. So please do that as well.

Regards

Marcel