netdev - Re: [PATCH 1/5] tg3: Convert to use hwmon_device_register_with

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Date:	Mon, 25 Nov 2013 18:47:48 -0800
From:	Guenter Roeck <linux@...ck-us.net>
To:	Nithin Nayak Sujir <nsujir@...adcom.com>, netdev@...r.kernel.org
CC:	"David S. Miller" <davem@...emloft.net>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Bruce Allan <bruce.w.allan@...el.com>,
	Carolyn Wyborny <carolyn.wyborny@...el.com>,
	Don Skidmore <donald.c.skidmore@...el.com>,
	Greg Rose <gregory.v.rose@...el.com>,
	Michael Chan <mchan@...adcom.com>,
	e1000-devel@...ts.sourceforge.net, lm-sensors@...sensors.org
Subject: Re: [PATCH 1/5] tg3: Convert to use hwmon_device_register_with_groups

On 11/25/2013 05:52 PM, Nithin Nayak Sujir wrote:
>
>
> On 11/22/2013 10:07 PM, Guenter Roeck wrote:
>> Use new hwmon API to simplify code, provide missing mandatory 'name'
>> sysfs attribute, and attach hwmon attributes to hwmon device instead
>> of pci device.
>>
>> Signed-off-by: Guenter Roeck <linux@...ck-us.net>
>> ---
>>   drivers/net/ethernet/broadcom/tg3.c |   25 ++++++-------------------
>>   1 file changed, 6 insertions(+), 19 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
>> index a9e0684..369b736 100644
>> --- a/drivers/net/ethernet/broadcom/tg3.c
>> +++ b/drivers/net/ethernet/broadcom/tg3.c
>> @@ -10629,10 +10629,8 @@ static void tg3_sd_scan_scratchpad(struct tg3 *tp, struct tg3_ocir *ocir)
>>   static ssize_t tg3_show_temp(struct device *dev,
>>                    struct device_attribute *devattr, char *buf)
>>   {
>> -    struct pci_dev *pdev = to_pci_dev(dev);
>> -    struct net_device *netdev = pci_get_drvdata(pdev);
>> -    struct tg3 *tp = netdev_priv(netdev);
>>       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
>> +    struct tg3 *tp = dev_get_drvdata(dev);
>
>
> Shouldn't this be
> struct tg3 *tp = netdev_priv(dev_get_drvdata(dev));
>

'struct tg3 *tp' is attached to the hwmon device in
hwmon_device_register_with_groups(), so it can be retrieved
with dev_get_drvdata() from there. Keep in mind that 'dev'
is no longer the pci device but the hwmon device.

Guenter


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