[PATCH 10/16] efi_driver: efi_net: Add efi_net_unbind_drv method to efi_net driver

[Adriano Cordova]

Signed-off-by: Adriano Cordova <adriano.cord...@canonical.com>
---
 lib/efi_driver/efi_net_device.c | 44 +++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/lib/efi_driver/efi_net_device.c b/lib/efi_driver/efi_net_device.c
index 3838cc47158..bc4edde19b0 100644
--- a/lib/efi_driver/efi_net_device.c
+++ b/lib/efi_driver/efi_net_device.c
@@ -9,6 +9,7 @@
 #include <malloc.h>
 #include <net.h>
 #include <dm/device-internal.h>
+#include <dm/lists.h>
 #include <dm/root.h>
 #include <dm/tag.h>
 #include <dm/uclass-internal.h>
@@ -172,6 +173,48 @@ static efi_status_t efi_net_bind_drv(
        return EFI_SUCCESS;
 }
 
+/**
+ * efi_net_unbind_drv() - TODO
+ *
+ * @this:      driver binding protocol
+ * @handle:    handle
+ * Return:     status code
+ */
+static efi_status_t efi_net_unbind_drv(
+                       struct efi_driver_binding_extended_protocol *this,
+                       efi_handle_t handle)
+{
+       EFI_PRINT("%s: handle %p\n", __func__, handle);
+
+       struct driver *drv;
+       struct udevice *dev;
+       int r;
+
+       if (!handle || !handle->dev)
+               return EFI_DEVICE_ERROR;
+
+       drv = lists_driver_lookup_name("efi_netdev");
+       if (!drv) {
+               log_err("Cannot find driver 'efi_netdev'\n");
+               return EFI_DEVICE_ERROR;
+       }
+
+       if (drv == handle->dev->driver) {
+               dev = handle->dev;
+               r = efi_unlink_dev(handle);
+               if (r)
+                       return EFI_DEVICE_ERROR;
+               r = device_remove(dev, DM_REMOVE_NORMAL);
+               if (r)
+                       return EFI_DEVICE_ERROR;
+               r = device_unbind(dev);
+               if (r)
+                       return EFI_DEVICE_ERROR;
+       }
+
+       return EFI_SUCCESS;
+}
+
 /**
  * efi_net_init_drv() - initialize network device driver
  *
@@ -236,6 +279,7 @@ static const struct efi_driver_ops driver_ops = {
        .protocol       = &efi_net_guid,
        .init           = efi_net_init_drv,
        .bind           = efi_net_bind_drv,
+       .unbind         = efi_net_unbind_drv,
 };
 
 /* Identify as EFI driver */
-- 
2.48.1