netdev - Re: [PATCH 1/2] iwlwifi: use pci

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Message-ID: <4E046A9F.9020909@mvista.com>
Date:	Fri, 24 Jun 2011 14:44:47 +0400
From:	Sergei Shtylyov <sshtylyov@...sta.com>
To:	"Guy, Wey-Yi" <wey-yi.w.guy@...el.com>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linville@...driver.com" <linville@...driver.com>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"ilw@...ux.intel.com" <ilw@...ux.intel.com>
Subject: Re: [PATCH 1/2] iwlwifi: use pci_dev->revision, again

Hello.

On 23-06-2011 19:02, Guy, Wey-Yi wrote:

>> Commit ff938e43d39e926de74b32a3656c190f979ab642 (net: use pci_dev->revision,
>> again) already converted this driver to using the 'revision' field of 'struct
>> pci_dev' but commit c2974a1d18832a9fffb2eb389c3878f5c4ed92f1 (iwlagn: remove
>> rev_id) later reverted that change for no reason. Now restore the change...

>> Signed-off-by: Sergei Shtylyov<sshtylyov@...mvista.com>

>> ---
>> The patch is against the recent Linus' tree.

>>   drivers/net/wireless/iwlwifi/iwl-agn.c |    5 ++---
>>   1 file changed, 2 insertions(+), 3 deletions(-)

>> Index: linux-2.6/drivers/net/wireless/iwlwifi/iwl-agn.c
>> ===================================================================
>> --- linux-2.6.orig/drivers/net/wireless/iwlwifi/iwl-agn.c
>> +++ linux-2.6/drivers/net/wireless/iwlwifi/iwl-agn.c
>> @@ -3275,10 +3275,9 @@ struct ieee80211_ops iwlagn_hw_ops = {
>>
>>   static u32 iwl_hw_detect(struct iwl_priv *priv)
>>   {
>> -	u8 rev_id;
>> +	IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n",
>> +		       priv->pci_dev->revision);
>>
>> -	pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID,&rev_id);
>> -	IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", rev_id);
>>   	return iwl_read32(priv, CSR_HW_REV);
>>   }

> hmm, I believe it is merge sequence issue, the IWL_DEBUG_INFO line has
> benn remove all together in later patch. the information is being log in
> the calling function, no need to log in "iwl_hw_detect"

    Hm, you probably mean this patch in the iwlwifi-2.6.git (of which I wasn't 
aware):

author	Emmanuel Grumbach <emmanuel.grumbach@...el.com>	
	Tue, 31 May 2011 06:58:18 +0000 (09:58 +0300)
committer	Wey-Yi Guy <wey-yi.w.guy@...el.com>	
	Sat, 18 Jun 2011 15:18:01 +0000 (08:18 -0700)
commit	85aed7c48113dfcdc913008481c46346af0db69e
tree	75831a2ec540039470c295a81c2059a24a4531f5
parent	19707bac16129ccebc398dbff9d2b44b17b24fea

iwlagn: don't read the PCI_REVISION_ID from iwl-agn.c

The PCI_REVISION_ID is read and printed in iwl_pci_probe anyway using pr_info

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@...el.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@...el.com>

    Since iwl_pci_probe() still reads the PCI config. register, my patch 
should be recast to modify iwl-pci.c instead...

> Wey

WBR, Sergei
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