linux-kernel - Re: [PATCH] drivers/serial/8250_pci.c (add support for '8-port RS-232 MIC-3620 from advantech'

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Date:	Thu, 22 Jan 2009 13:47:35 +0200
From:	Paulius Zaleckas <paulius.zaleckas@...tonika.lt>
To:	Michael Bramer <michael@...support.de>
CC:	Niels de Vos <niels.devos@...cor-nixdorf.com>,
	Tosoni <jp.tosoni@...sys.fr>,
	'Alan Cox' <alan@...rguk.ukuu.org.uk>,
	linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org
Subject: Re: [PATCH] drivers/serial/8250_pci.c (add support for '8-port RS-232
 MIC-3620 from advantech'

Michael Bramer wrote:
> On Thu, Jan 22, 2009 at 10:03:53AM +0100, Niels de Vos wrote:
>> Tosoni wrote:
>>>> On Wed, Jan 21, 2009 at 12:32:15PM +0000, Alan Cox wrote:
>>>>>>>>  static struct pci_device_id serial_pci_tbl[] = {
>>>>>>>> +       {       PCI_VENDOR_ID_ADVANTECH,
>>>> PCI_DEVICE_ID_ADVANTECH_PCI3620,
>>>>>>>> +               0x3620, PCI_ANY_ID, 0, 0,
>>>>>> Why not use PCI_VENDOR_ID_ADVANTECH as PCI_SUBVENDOR_ID too?
>>>>> The Advantech vendor id is not 0x3620. This confused me as
>>>> well which is
>>>>> why I asked for an lspci. Advantech has stuck the device id in the
>>>>> subvendor bits and '1' in the subdevice (so it should be 1 not
>>>>> PCI_ANY_ID).
>>>> is this better?
>>>>
>>>> +       {       PCI_VENDOR_ID_ADVANTECH,
>>>> PCI_DEVICE_ID_ADVANTECH_PCI3620,
>>>> +               PCI_DEVICE_ID_ADVANTECH_PCI3620, 1, 0, 0,
>>> Since the name describes a device id where it should be a (sub)vendor id,
>>> I would suggest that you add a line of comment to explain the case.
>>> So that no one will be tempted to change it back to PCI_VENDOR_ID_ADVANTECH
>>> in the future.
>> Definitely!
> 
> Is the patch now ok?

No :)

> ----
> This Patch add the device information for the
> MIC-3620 8-port RS-232 cPCI card from Advantech Co. Ltd.
> 
> Signed-off-by: Michael Bramer <grisu@...-support.de>
> --- a/drivers/serial/8250_pci.c	2008-07-13 23:51:29.000000000 +0200
> +++ b/drivers/serial/8250_pci.c	2009-01-17 21:37:37.000000000 +0100
> @@ -769,6 +768,8 @@
>  #define PCI_SUBDEVICE_ID_OCTPRO422	0x0208
>  #define PCI_SUBDEVICE_ID_POCTAL232	0x0308
>  #define PCI_SUBDEVICE_ID_POCTAL422	0x0408
> +#define PCI_VENDOR_ID_ADVANTECH         0x13fe
> +#define PCI_DEVICE_ID_ADVANTECH_PCI3620 0x3620

Use TABs for indentation here.

>  /*
>   * Master list of serial port init/setup/exit quirks.
> @@ -2054,6 +2041,10 @@
>  #endif
>  
>  static struct pci_device_id serial_pci_tbl[] = {
> +	// Advantech use PCI_DEVICE_ID_ADVANTECH_PCI3620 (0x3620) as 'PCI_SUBVENDOR_ID'
> +	{	PCI_VENDOR_ID_ADVANTECH, PCI_DEVICE_ID_ADVANTECH_PCI3620,
> +		PCI_DEVICE_ID_ADVANTECH_PCI3620, 1, 0, 0,
> +		pbn_b2_8_921600 },
>  	{	PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V960,
>  		PCI_SUBVENDOR_ID_CONNECT_TECH,
>  		PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_232, 0, 0,
> ----
> 
> 
> Gruss
> Grisu
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