On Thursday, November 28, 2013 3:24 PM, Joe Perches wrote:
>On Wed, 2013-11-27 at 21:53 -0800, 'Greg Kroah-Hartman' wrote:
>>On Wed, Nov 27, 2013 at 09:40:13PM -0800, Joe Perches wrote:
>>>On Thu, 2013-11-28 at 14:29 +0900, Jingoo Han wrote:
>>>>On Thursday, November 28, 2013 1:08 PM, Greg Kroah-Hartman wrote:
>>>>>On Thu, Nov 28, 2013 at 10:55:35AM +0900, Jingoo Han wrote:
>>>>>> This macro is used to create a struct pci_device_id array.
>>>>>
>>>>> Yeah, and it's a horrid macro that deserves to be removed, please don't
>>>>> use it in more places.
>>>>>
>>>>> Actually, if you could just remove it, that would be best, sorry, I'm
>>>>> not going to take these patches.
>>>>
>>>> (+cc Joe Perches, Andrew Morton, Andy Whitcroft)
>>>>
>>>> Hi Joe Perches,
>>>>
>>>> Would you fix checkpatch.pl about DEFINE_PCI_DEVICE_TABLE?
>>>> Currently, checkpatch.pl guides to use DEFINE_PCI_DEVICE_TABLE
>>>> as below.
>>>>
>>>> WARNING: Use DEFINE_PCI_DEVICE_TABLE for struct pci_device_id
>>>> #331: FILE: drivers/usb/host/ehci-pci.c:331:
>>>> +static const struct pci_device_id pci_ids [] = { {
>>>>
>>>> However, Greg Kroah-Hartman mentioned that DEFINE_PCI_DEVICE_TABLE
>>>> shouldn't be used anymore.
>>>>
>>>> So, would you change checkpatch.pl in order to guide to use
>>>> struct pci_device_id instead of DEFINE_PCI_DEVICE_TABLE?
>>>>
>>>> For example,
>>>> WARNING: Use struct pci_device_id instead of DEFINE_PCI_DEVICE_TABLE
>>>
>>> The documentation doesn't agree with Greg.
>[]
>> I say just remove it, I should have done that years ago when I was the
>> PCI maintainer, just never got around to it. No other bus has something
>> like this for their device ids, why should PCI be "special"?
>
>Anyone else have an opinion?
>
>I don't care one way or another, but please, one way
>not two.
(+cc Bjorn Helgaas, linux-pci)
Then, how about the following steps?
1. Fix ./Documentation/PCI/pci.txt as below.
(Jingoo Han)
The ID table is an array of struct pci_device_id entries ending with an
-all-zero entry; use of the macro DEFINE_PCI_DEVICE_TABLE is the preferred
-method of declaring the table. Each entry consists of:
+all-zero entry; Each entry consists of:
2. Fix ./scripts/checkpatch.pl in order to guide to use
struct pci_device_id instead of DEFINE_PCI_DEVICE_TABLE.
(Joe Perches)
3. Replace DEFINE_PCI_DEVICE_TABLE of ./drivers/*
with 'const struct pci_device_id'.
(Jingoo Han)
4. These patches will be merged through 'driver-core.git'
with 'Acked-by' of each subsystem maintainer.
(Greg Kroah-Hartman)
Best regards,
Jingoo Han
>Changing checkpatch is a trifle, but there are a _lot_
>of maintainers to work through if it's to be removed.
>
>It'll probably take several releases.
>
>$ git grep --name-only -w DEFINE_PCI_DEVICE_TABLE | \
> cut -f1,2 -d/ | uniq -c
> 1 Documentation/PCI
> 1 arch/x86
> 1 drivers/bcma
> 3 drivers/block
> 1 drivers/char
> 1 drivers/cpufreq
> 2 drivers/dma
> 18 drivers/edac
> 6 drivers/gpio
> 6 drivers/gpu
> 6 drivers/hwmon
> 20 drivers/i2c
> 2 drivers/infiniband
> 1 drivers/ipack
> 1 drivers/leds
> 3 drivers/media
> 10 drivers/mfd
> 2 drivers/misc
> 1 drivers/mmc
> 1 drivers/mtd
> 132 drivers/net
> 1 drivers/ntb
> 1 drivers/pci
> 5 drivers/pcmcia
> 2 drivers/platform
> 1 drivers/ptp
> 1 drivers/rapidio
> 7 drivers/scsi
> 3 drivers/spi
> 65 drivers/staging
> 3 drivers/tty
> 1 drivers/uio
> 5 drivers/usb
> 1 drivers/video
> 1 drivers/virtio
> 3 drivers/vme
> 9 drivers/watchdog
> 1 drivers/xen
> 1 include/linux
> 1 scripts/checkpatch.pl
> 1 scripts/tags.sh
> 1 sound/oss
> 67 sound/pci
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