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Subject[PATCH v6 2/3] Bluetooth: btusb: Add btusb devcoredump support
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This patch implements the btusb driver side .coredump() callback to
trigger a devcoredump via sysfs.

Signed-off-by: Manish Mandlik <mmandlik@google.com>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
---

Changes in v6:
- Remove dev->coredump_disabled check since the sysfs flag related
change has been abandoned

Changes in v4:
- New patch in the series

drivers/bluetooth/btusb.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 271963805a38..e9052779f4f8 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -4205,6 +4205,17 @@ 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 (hdev->dump.coredump)
+ hdev->dump.coredump(hdev);
+}
+#endif
+
static struct usb_driver btusb_driver = {
.name = "btusb",
.probe = btusb_probe,
@@ -4216,6 +4227,14 @@ 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);
--
2.37.3.998.g577e59143f-goog
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