On Mon, Dec 02, 2013 at 09:43:37AM -0800, Joe Perches wrote:
> Prefer use of the direct definition of struct pci_device_id
Add 'const' ?
> instead of indirection via macro DEFINE_PCI_DEVICE_TABLE.
>
> Update the PCI documentation to deprecate DEFINE_PCI_DEVICE_TABLE.
> Update checkpatch adding --fix option.
>
> Signed-off-by: Joe Perches <j...@perches.com>
> ---
> Documentation/PCI/pci.txt | 6 ++++--
> include/linux/pci.h | 3 +--
> scripts/checkpatch.pl | 11 +++++++----
> 3 files changed, 12 insertions(+), 8 deletions(-)
>
> diff --git a/Documentation/PCI/pci.txt b/Documentation/PCI/pci.txt
> index 6f45856..9518006 100644
> --- a/Documentation/PCI/pci.txt
> +++ b/Documentation/PCI/pci.txt
> @@ -123,8 +123,10 @@ initialization with a pointer to a structure describing
> the driver
>
>
> 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. Definitions with static const are generally preferred.
> +Use of the deprecated macro DEFINE_PCI_DEVICE_TABLE should be avoided.
> +
> +Each entry consists of:
>
> vendor,device Vendor and device ID to match (or PCI_ANY_ID)
>
> diff --git a/include/linux/pci.h b/include/linux/pci.h
> index 1084a15..88674b0 100644
> --- a/include/linux/pci.h
> +++ b/include/linux/pci.h
> @@ -634,8 +634,7 @@ struct pci_driver {
> * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table
> * @_table: device table name
> *
> - * This macro is used to create a struct pci_device_id array (a device table)
> - * in a generic manner.
> + * This macro is deprecated and should not be used in new code.
> */
> #define DEFINE_PCI_DEVICE_TABLE(_table) \
> const struct pci_device_id _table[]
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 38be5d5..6f883f0 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -2643,10 +2643,13 @@ sub process {
> }
> }
>
> -# check for declarations of struct pci_device_id
> - if ($line =~
> /\bstruct\s+pci_device_id\s+\w+\s*\[\s*\]\s*\=\s*\{/) {
> - WARN("DEFINE_PCI_DEVICE_TABLE",
> - "Use DEFINE_PCI_DEVICE_TABLE for struct
> pci_device_id\n" . $herecurr);
> +# check for uses of DEFINE_PCI_DEVICE_TABLE
> + if ($line =~ /\bDEFINE_PCI_DEVICE_TABLE\s*\(\s*(\w+)\s*\)\s*=/)
> {
> + if (WARN("DEFINE_PCI_DEVICE_TABLE",
> + "Prefer struct pci_device_id over deprecated
> DEFINE_PCI_DEVICE_TABLE\n" . $herecurr) &&
Add 'const' ?
Guenter
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