diff options
Diffstat (limited to 'drivers/misc/cxl/pci.c')
| -rw-r--r-- | drivers/misc/cxl/pci.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c index 80a87ab25b83..91f645992c94 100644 --- a/drivers/misc/cxl/pci.c +++ b/drivers/misc/cxl/pci.c @@ -1129,6 +1129,7 @@ static int pci_configure_afu(struct cxl_afu *afu, struct cxl *adapter, struct pc if ((rc = cxl_native_register_psl_irq(afu))) goto err2; + atomic_set(&afu->configured_state, 0); return 0; err2: @@ -1141,6 +1142,14 @@ err1: static void pci_deconfigure_afu(struct cxl_afu *afu) { + /* + * It's okay to deconfigure when AFU is already locked, otherwise wait + * until there are no readers + */ + if (atomic_read(&afu->configured_state) != -1) { + while (atomic_cmpxchg(&afu->configured_state, 0, -1) != -1) + schedule(); + } cxl_native_release_psl_irq(afu); if (afu->adapter->native->sl_ops->release_serr_irq) afu->adapter->native->sl_ops->release_serr_irq(afu); @@ -1610,6 +1619,9 @@ static void cxl_pci_remove_adapter(struct cxl *adapter) cxl_sysfs_adapter_remove(adapter); cxl_debugfs_adapter_remove(adapter); + /* Flush adapter datacache as its about to be removed */ + cxl_data_cache_flush(adapter); + cxl_deconfigure_adapter(adapter); device_unregister(&adapter->dev); |