This patch implements the btusb driver side .coredump() callback to
trigger a devcoredump via sysfs and .enable_coredump() callback to
check if the devcoredump functionality is enabled for a device.
Signed-off-by: Manish Mandlik <mmandlik@xxxxxxxxxx>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@xxxxxxxxxxxx>
---
(no changes since v4)
Changes in v4:
- New patch in the series
drivers/bluetooth/btusb.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 30dd443f395f..b00851327aa3 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -1510,6 +1510,15 @@ static void btusb_isoc_tx_complete(struct urb *urb)
kfree_skb(skb);
}
+#ifdef CONFIG_DEV_COREDUMP
+static bool btusb_coredump_enabled(struct hci_dev *hdev)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+
+ return !data->intf->dev.coredump_disabled;
+}
+#endif
+
static int btusb_open(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);
@@ -3765,6 +3774,9 @@ static int btusb_probe(struct usb_interface *intf,
hdev->send = btusb_send_frame;
hdev->notify = btusb_notify;
hdev->wakeup = btusb_wakeup;
+#ifdef CONFIG_DEV_COREDUMP
+ hdev->dump.enabled = btusb_coredump_enabled;
+#endif
#ifdef CONFIG_PM
err = btusb_config_oob_wake(hdev);
@@ -4180,6 +4192,17 @@ static int btusb_resume(struct usb_interface *intf)
}
#endif
+#ifdef CONFIG_DEV_COREDUMP
+static void btusb_coredump(struct device *dev)
+{
+ struct btusb_data *data = dev_get_drvdata(dev);
+ struct hci_dev *hdev = data->hdev;
+
+ if (!dev->coredump_disabled && hdev->dump.coredump)
+ hdev->dump.coredump(hdev);
+}
+#endif
+
static struct usb_driver btusb_driver = {
.name = "btusb",
.probe = btusb_probe,
@@ -4191,6 +4214,14 @@ static struct usb_driver btusb_driver = {
.id_table = btusb_table,
.supports_autosuspend = 1,
.disable_hub_initiated_lpm = 1,
+
+#ifdef CONFIG_DEV_COREDUMP
+ .drvwrap = {
+ .driver = {
+ .coredump = btusb_coredump,
+ },
+ },
+#endif
};
module_usb_driver(btusb_driver);
--
2.37.1.559.g78731f0fdb-goog
