linux-kernel - Re: [PATCH] wlwifi: Fix missing error code in iwl_pci

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Date:   Fri, 29 Oct 2021 19:44:15 +0000
From:   "Coelho, Luciano" <luciano.coelho@...el.com>
To:     "jiapeng.chong@...ux.alibaba.com" <jiapeng.chong@...ux.alibaba.com>
CC:     "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "kvalo@...eaurora.org" <kvalo@...eaurora.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kuba@...nel.org" <kuba@...nel.org>
Subject: Re: [PATCH] wlwifi: Fix missing error code in iwl_pci_probe()

On Fri, 2021-10-29 at 17:55 +0800, Jiapeng Chong wrote:
> From: chongjiapeng <jiapeng.chong@...ux.alibaba.com>
> 
> The error code is missing in this code scenario, add the error code
> '-EINVAL' to the return value 'ret'.
> 
> Eliminate the follow smatch warning:
> 
> drivers/net/wireless/intel/iwlwifi/pcie/drv.c:1376 iwl_pci_probe() warn:
> missing error code 'ret'.
> 
> Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
> Fixes: 1f171f4f1437 ("iwlwifi: Add support for getting rf id with blank otp")
> Signed-off-by: chongjiapeng <jiapeng.chong@...ux.alibaba.com>
> ---
>  drivers/net/wireless/intel/iwlwifi/pcie/drv.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
> index cff76a528967..33250d24c2b9 100644
> --- a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
> +++ b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
> @@ -1442,9 +1442,10 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
>  	 */
>  	if (iwl_trans->trans_cfg->rf_id &&
>  	    iwl_trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_9000 &&
> -	    !CSR_HW_RFID_TYPE(iwl_trans->hw_rf_id) && get_crf_id(iwl_trans))
> +	    !CSR_HW_RFID_TYPE(iwl_trans->hw_rf_id) && get_crf_id(iwl_trans)) {
>  		ret = -EINVAL;
>  		goto out_free_trans;
> +	}
>  
>  	dev_info = iwl_pci_find_dev_info(pdev->device, pdev->subsystem_device,
>  					 CSR_HW_REV_TYPE(iwl_trans->hw_rev),

Thanks for your patch!

The commit description makes sense.  But the patch itself is wrong.  It
seems to be fixing an earlier attempt at fixing the issue, where the
ret = -EINVAL was added, but the braces were missing (which is what
this patch adds).

So, this patch is incomplete and won't apply as is.  Can you please fix
it?

--
Luca.