Re: [PATCH] iwl3945: Fix oops at module load

["Guy, Wey-Yi" <wey-yi.w.guy@intel.com>]

Hi Andi,

On Mon, 2010-11-08 at 13:54 -0800, Andi Kleen wrote:
> From: Andi Kleen <ak@linux.intel.com>
> 
> On my laptop the iwl3945 driver oopsed at boot with 2.6.37-rc1
> in __dev_printk.
> 
> The problem is that for some reason it prints the sw scan
> warning, but does that before the pci device is initialized
> in the driver private structure. This leads to an oops
> in the warning print code.
> 
> Move the warning after the device has been initialized.
> 
> Cc: Johannes.berg@intel.com
> Signed-off-by: Andi Kleen <ak@linux.intel.com>
> ---
>  drivers/net/wireless/iwlwifi/iwl3945-base.c |   11 +++++------
>  1 files changed, 5 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
> index 8f8c4b7..3910ec2 100644
> --- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
> +++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
> @@ -3995,6 +3995,11 @@ static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
>  	priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
>  	priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
>  
> +	IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
> +	priv->cfg = cfg;
> +	priv->pci_dev = pdev;
> +	priv->inta_mask = CSR_INI_SET_MASK;
> +
>  	/*
>  	 * Disabling hardware scan means that mac80211 will perform scans
>  	 * "the hard way", rather than using device's scan.
> @@ -4004,12 +4009,6 @@ static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
>  		iwl3945_hw_ops.hw_scan = NULL;
>  	}
>  
> -
> -	IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
> -	priv->cfg = cfg;
> -	priv->pci_dev = pdev;
> -	priv->inta_mask = CSR_INI_SET_MASK;
> -
>  	if (iwl_alloc_traffic_mem(priv))
>  		IWL_ERR(priv, "Not enough memory to generate traffic log\n");
>  

I believe the fix already in
http://git.kernel.org/?p=linux/kernel/git/iwlwifi/iwlwifi-2.6.git;a=summary
commit#6e0922e0781884ff4eb3638f10a91b63b6120207

Thanks
Wey