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Add interface revision field to pci_register_lkm parameter list.pci.c pcibus.h

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This parameter is intended to allow new kernels to work with old LKM binaries,
provided the revision ID is incremented whenever the PCI LKM interface is
changed. The revision ID does not at all protect against changes in data
structures accesses by the driver.
This commit is contained in:
Stefan Eßer 1997-02-04 18:31:57 +00:00
parent f2071a9cf6
commit cfc23ad40c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=22260
3 changed files with 11 additions and 3 deletions
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6
sys/dev/pci/pci.c
View File

@ -953,10 +953,14 @@ static void pci_rescan()
**========================================================
*/
int pci_register_lkm (struct pci_device *dvp)
int pci_register_lkm (struct pci_device *dvp, int if_revision)
{
struct pci_lkm *lkm;
if (if_version != 0) {
return -1;
}
if (!dvp || !dvp->pd_probe || !dvp->pd_attach) {
return -1;
}

6
sys/pci/pci.c
View File

@ -953,10 +953,14 @@ static void pci_rescan()
**========================================================
*/
int pci_register_lkm (struct pci_device *dvp)
int pci_register_lkm (struct pci_device *dvp, int if_revision)
{
struct pci_lkm *lkm;
if (if_version != 0) {
return -1;
}
if (!dvp || !dvp->pd_probe || !dvp->pd_attach) {
return -1;
}

2
sys/pci/pcibus.h
View File

@ -94,6 +94,6 @@ struct pcibus {
extern struct linker_set pcibus_set;
int pci_register_lkm (struct pci_device *dvp);
int pci_register_lkm (struct pci_device *dvp, int if_revision);
#endif