Some processors contain multiple CCPs with differing device IDs. Enable the selection of specific devices based on ID. The parameter value is a single PCI ID. Signed-off-by: Gary R Hook <gary.hook@xxxxxxx> --- drivers/crypto/ccp/sp-pci.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/crypto/ccp/sp-pci.c b/drivers/crypto/ccp/sp-pci.c index 29177d113c90..b024b92fb749 100644 --- a/drivers/crypto/ccp/sp-pci.c +++ b/drivers/crypto/ccp/sp-pci.c @@ -36,6 +36,9 @@ /* * Limit CCP use to a specifed number of queues per device. */ +static unsigned int pcidev; +module_param(pcidev, uint, 0444); +MODULE_PARM_DESC(pcidev, "Device number for a specific CCP"); static struct mutex devcount_mutex ____cacheline_aligned; static unsigned int devcount = 0; @@ -204,6 +207,10 @@ static int sp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) if (maxdev && (devcount >= maxdev)) /* Too many devices? */ return 0; + /* If a specific device ID has been specified, filter for it */ + if (pcidev && (pdev->device != pcidev)) + return 0; + ret = -ENOMEM; sp = sp_alloc_struct(dev); if (!sp)
