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| author | Kishon Vijay Abraham I <kishon@ti.com> | 2020-02-24 12:53:34 +0300 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2020-02-24 13:07:06 +0300 |
| commit | 5779dd0a7dbd71e82478fb0bf125cc6cd3c43266 (patch) | |
| tree | d3e6f62c7820f882ba2cd3d006153185592e7628 /drivers/pci/endpoint/functions | |
| parent | bb6d3fb354c5ee8d6bde2d576eb7220ea09862b9 (diff) | |
| download | linux-5779dd0a7dbd71e82478fb0bf125cc6cd3c43266.tar.xz | |
PCI: endpoint: Use notification chain mechanism to notify EPC events to EPF
Use atomic_notifier_call_chain() to notify EPC events like linkup to EPF
driver instead of using linkup ops in EPF driver. This is in preparation
for adding proper locking mechanism to EPF ops. This will also enable to
add more events (in addition to linkup) in the future.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Tested-by: Vidya Sagar <vidyas@nvidia.com>
Diffstat (limited to 'drivers/pci/endpoint/functions')
| -rw-r--r-- | drivers/pci/endpoint/functions/pci-epf-test.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c index 5d74f81ddfe4..bddff15052cc 100644 --- a/drivers/pci/endpoint/functions/pci-epf-test.c +++ b/drivers/pci/endpoint/functions/pci-epf-test.c @@ -360,12 +360,16 @@ reset_handler: msecs_to_jiffies(1)); } -static void pci_epf_test_linkup(struct pci_epf *epf) +static int pci_epf_test_notifier(struct notifier_block *nb, unsigned long val, + void *data) { + struct pci_epf *epf = container_of(nb, struct pci_epf, nb); struct pci_epf_test *epf_test = epf_get_drvdata(epf); queue_delayed_work(kpcitest_workqueue, &epf_test->cmd_handler, msecs_to_jiffies(1)); + + return NOTIFY_OK; } static void pci_epf_test_unbind(struct pci_epf *epf) @@ -546,8 +550,12 @@ static int pci_epf_test_bind(struct pci_epf *epf) } } - if (!linkup_notifier) + if (linkup_notifier) { + epf->nb.notifier_call = pci_epf_test_notifier; + pci_epc_register_notifier(epc, &epf->nb); + } else { queue_work(kpcitest_workqueue, &epf_test->cmd_handler.work); + } return 0; } @@ -580,7 +588,6 @@ static int pci_epf_test_probe(struct pci_epf *epf) static struct pci_epf_ops ops = { .unbind = pci_epf_test_unbind, .bind = pci_epf_test_bind, - .linkup = pci_epf_test_linkup, }; static struct pci_epf_driver test_driver = { |