Prefer use of the direct definition of struct pci_device_id
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 <joe@xxxxxxxxxxx>
---
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) &&
+ $fix) {
+ $fixed[$linenr - 1] =~ s/\b(?:static\s+|)DEFINE_PCI_DEVICE_TABLE\s*\(\s*(\w+)\s*\)\s*=\s*/static const struct pci_device_id $1\[\] = /;
+ }
}
# check for new typedefs, only function parameters and sparse annotations
--
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