Certain platforms like TI's K2G doesn't support link-up notification. Add support to poll early (without waiting for the linkup notification) for commands from the host.
Signed-off-by: Kishon Vijay Abraham I <[email protected]> --- drivers/pci/endpoint/functions/pci-epf-test.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c index e378dae9e510..a0aea2500690 100644 --- a/drivers/pci/endpoint/functions/pci-epf-test.c +++ b/drivers/pci/endpoint/functions/pci-epf-test.c @@ -55,6 +55,7 @@ struct pci_epf_test { void *reg[6]; struct pci_epf *epf; enum pci_barno test_reg_bar; + bool linkup_notifier; struct delayed_work cmd_handler; }; @@ -77,6 +78,7 @@ static struct pci_epf_header test_header = { struct pci_epf_test_data { enum pci_barno test_reg_bar; + bool linkup_notifier; }; static int bar_size[] = { 512, 512, 1024, 16384, 131072, 1048576 }; @@ -424,6 +426,7 @@ static int pci_epf_test_alloc_space(struct pci_epf *epf) static int pci_epf_test_bind(struct pci_epf *epf) { int ret; + struct pci_epf_test *epf_test = epf_get_drvdata(epf); struct pci_epf_header *header = epf->header; struct pci_epc *epc = epf->epc; struct device *dev = &epf->dev; @@ -449,6 +452,9 @@ static int pci_epf_test_bind(struct pci_epf *epf) if (ret) return ret; + if (!epf_test->linkup_notifier) + queue_work(kpcitest_workqueue, &epf_test->cmd_handler.work); + return 0; } @@ -466,11 +472,14 @@ static int pci_epf_test_probe(struct pci_epf *epf) const struct pci_epf_device_id *match; struct pci_epf_test_data *data; enum pci_barno test_reg_bar = BAR_0; + bool linkup_notifier = true; match = pci_epf_match_device(pci_epf_test_ids, epf); data = (struct pci_epf_test_data *)match->driver_data; - if (data) + if (data) { test_reg_bar = data->test_reg_bar; + linkup_notifier = data->linkup_notifier; + } epf_test = devm_kzalloc(dev, sizeof(*epf_test), GFP_KERNEL); if (!epf_test) @@ -479,6 +488,7 @@ static int pci_epf_test_probe(struct pci_epf *epf) epf->header = &test_header; epf_test->epf = epf; epf_test->test_reg_bar = test_reg_bar; + epf_test->linkup_notifier = linkup_notifier; INIT_DELAYED_WORK(&epf_test->cmd_handler, pci_epf_test_cmd_handler); -- 2.11.0
